Physical Review Applied - May 2023

Physical Review Applied View Email Online   Volume 19, Issue 5 May 2023   View Issue   Advertisement Discuss your research with Editors from the Physical Review Journals at DAMOP 2023 Got a question about your paper? Interested in learning more about the submission process? Want to become a referee? There are several opportunities to gain insight from editors from Physical Review Letters, Physical Review X, and Physical Review A at the 54th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics in Spokane, Washington. Tutorial for Authors and Referees - Wednesday, June 7 from 3:30 p.m. – 4:30 p.m. in Room 201 ABC Meet the APS Journal Editors - Wednesday, June 7 from 4:30 p.m. – 6:00 p.m. in the Riverside Lobby. Plus, editors will be available for informal discussions at the Journals Booth, located in the Lobby area from 10 a.m. - 11 a.m., Monday, June 6 through Thursday, June 8, and again from 3:30 p.m. - 4:30 p.m. Tuesday, June 7 and Thursday, June 8.     Advertisement APS Signs Declaration on Research Assessment (DORA) The American Physical Society (APS), publisher of the Physical Review journals, is joining more than 20,000 individuals and organizations across 160 countries in a commitment to improve how researchers and their contributions to the scientific record are evaluated. APS is proud to mark the 10th anniversary of the Declaration on Research Assessment (DORA) by officially signing on to the international initiative. Learn more.     Advertisement Share Your Thoughts on Physical Review APS would like to learn about your publishing experiences with scientific journals, including PRL and other Physical Review journals. Please complete this survey to help APS better understand and meet your publishing needs. Take the survey.     Not an APS member? Join today to start connecting with a community of more than 50,000 physicists.   EDITORIALS AND ANNOUNCEMENTS Editorial: Closing the Collection on Photovoltaic Energy Conversion Shanhui Fan and Zetian Mi Phys. Rev. Applied 19, 050001 (2023) – Published 17 May 2023   Guest Editors Shanhui Fan and Zetian Mi reflect on the Collection upon its closing.     HIGHLIGHTED ARTICLES Editors' Suggestion Monitoring the Charge-Carrier-Occupied Density of States in Disordered Organic Semiconductors under Nonequilibrium Conditions Using Thermally Stimulated Luminescence Spectroscopy Andrei Stankevych, Rishabh Saxena, Alexander Vakhnin, Falk May, Naomi Kinaret, Denis Andrienko, Jan Genoe, Heinz Bässler, Anna Köhler, and Andrey Kadashchuk Phys. Rev. Applied 19, 054007 (2023) – Published 2 May 2023 Injected or photogenerated charge carriers in disordered organic semiconductors relax in energy to form an occupied density of states (ODOS) that is inherently difficult to probe. Thus little is known about nonequilibrium ODOS properties, although they are important in e.g. solar cells and LEDs. This work presents an optical technique for monitoring the ODOS distribution of relaxed charge carriers at low temperatures. The distribution that forms under nonequilibrium conditions is always narrower than that of the full DOS, in a universal ratio of about 2/3 that is reproduced by kinetic Monte Carlo simulations assuming spatially correlated disorder.     Editors' Suggestion Loss-Compensated and Enhanced Midinfrared Interaction-Free Sensing with Undetected Photons Nathan R. Gemmell, Jefferson Flórez, Emma Pearce, Olaf Czerwinski, Chris C. Phillips, Rupert F. Oulton, and Alex S. Clark Phys. Rev. Applied 19, 054019 (2023) – Published 5 May 2023 Sensing with undetected photons is a fascinating technique that allows imaging at wavelengths outside a particular detector's range—enabling, for example, biological imaging without perturbing live cells. In this interference technique, performance can be very sensitive to both sample transmission and losses. This study shows that by balancing the nonlinear interferometer's arms, one can completely recover fringe visibility caused by signal loss. Moreover, intentional unbalancing offers a reduced-interaction regime where the detected power can be 200 times higher than the power reaching the sample, for ultrasensitive midinfrared sensing well below the conventional noise floor.     Editors' Suggestion Flip-Chip-Based Microwave Spectroscopy of Andreev Bound States in a Planar Josephson Junction M. Hinderling, D. Sabonis, S. Paredes, D.Z. Haxell, M. Coraiola, S.C. ten Kate, E. Cheah, F. Krizek, R. Schott, W. Wegscheider, and F. Nichele Phys. Rev. Applied 19, 054026 (2023) – Published 8 May 2023 Measurement and coherent manipulation of Andreev bound states (ABSs) in planar superconductor-semiconductor heterostructures could enable gate-controllable, small-footprint superconducting spin qubits with long coherence times. So far, readout capabilities and device coherence have been limited by lossy III−V substrates, but here researchers overcome this limitation with a flip-chip approach to microwave experiments on ABSs. Superconductor-semiconductor devices and microwave resonators are placed on different chips and inductively coupled via a vacuum gap, enabling high-quality readout without sacrificing device properties.     Editors' Suggestion Acoustic Topological Metamaterials of Large Winding Number Han Liu, Xueqin Huang, Mou Yan, Jiuyang Lu, Weiyin Deng, and Zhengyou Liu Phys. Rev. Applied 19, 054028 (2023) – Published 9 May 2023 Long-range couplings beyond the nearest neighbors can trigger exotic topological phases in metamaterials but have been overlooked in many topological models. The authors study the effect of the long-range couplings on the topological properties, and demonstrate that a Su-Schrieffer-Heeger model including the third nearest coupling, implemented by acoustic metamaterials, can lead to topological phases of large winding numbers. The experimental results show additional topological end states and rotonlike dispersions for sound waves, highlighting the potential of these long-range metamaterials in creating rich topological features.     Editors' Suggestion Asynchronous Reversible Computing Unveiled Using Ballistic Shift Registers K.D. Osborn and W. Wustmann Phys. Rev. Applied 19, 054034 (2023) – Published 10 May 2023 Reversible computing exploits thermodynamic principles to replace irreversible Boolean logic with higher-efficiency reversible logic, and could change the future of computers. How best to implement reversible gates and architectures remains an open problem. Superconducting hardware features negligible intrinsic damping, which allows for exploration of many digital circuit types with varying degrees of reversibility. This study simulates Josephson junctions, where single flux quanta serve as bits in this logic type, with the goal of replacing an irreversible shift-register memory. The authors find that asynchronous access, and therefore simpler architecture, is possible.     Editors' Suggestion Integrated Hybrid Plasmonic-Photonic Device for All-Optical Switching and Reading of Spintronic Memory Hamed Pezeshki, Pingzhi Li, Reinoud Lavrijsen, Martijn Heck, Erwin Bente, Jos van der Tol, and Bert Koopmans Phys. Rev. Applied 19, 054036 (2023) – Published 10 May 2023 This paper provides a key solution for integrating spintronic memories with photonic integrated circuits, for all-optical switching and reading of nanoscale magnetic bits. Problems associated with nonlinear absorption and the intrinsically weak magneto-optical effect are solved by a hybrid scheme, exploiting plasmonic and photonic resonators. Thus the authors have developed a device concept that paves the way toward ultrafast, energy-efficient advanced on-chip applications.     Editors' Suggestion Superconducting Microsphere Magnetically Levitated in an Anharmonic Potential with Integrated Magnetic Readout Martí Gutierrez Latorre, Gerard Higgins, Achintya Paradkar, Thilo Bauch, and Witlef Wieczorek Phys. Rev. Applied 19, 054047 (2023) – Published 12 May 2023 The authors present a platform for quantum experiments on levitated particles with masses ranging from nanograms to micrograms. They exploit the Meissner effect to magnetically levitate superconducting microparticles on a chip, in vacuum at ultralow temperatures. Integrated magnetic readout enables coupling to superconducting quantum circuits. This platform allows for precise measurements of force and acceleration, with potential applications in sensing, including the search for dark matter.     Editors' Suggestion Induced-Photorefraction Attack against Quantum key Distribution Peng Ye, Wei Chen, Guo-Wei Zhang, Feng-Yu Lu, Fang-Xiang Wang, Guan-Zhong Huang, Shuang Wang, De-Yong He, Zhen-Qiang Yin, Guang-Can Guo, and Zheng-Fu Han Phys. Rev. Applied 19, 054052 (2023) – Published 16 May 2023 Lithium niobate (LN) devices have been widely adopted in systems for quantum key distribution (QKD), but the photorefractive effect in LN devices can be exploited as a potential loophole for malicious attacks by eavesdroppers. This work points out a vulnerability of LN devices of which manufacturers and users must become aware, so that appropriate countermeasures may be implemented. Moreover, the physical mechanism and techniques introduced in this work open an important avenue to the security analysis of QKD systems.     Editors' Suggestion Chemical Trend of Nonradiative Recombination in Cu(In,Ga)Se2 Alloys Baoying Dou, Stefano Falletta, Jörg Neugebauer, Christoph Freysoldt, Xie Zhang, and Su-Huai Wei Phys. Rev. Applied 19, 054054 (2023) – Published 16 May 2023 Understanding nonradiative recombination is important for improving semiconductor devices. For Cu(In,Ga)Se2 (CIGS) solar cells, antisite defects have long been considered the main recombination centers, yet the underlying mechanism has remained elusive. Here first-principles calculations show that these "killer centers" themselves cannot capture holes efficiently for effective recombination. However, internal conversion to the distorted neutral DX center does open an efficient hole-capture pathway, and DX's stability in CIGS increases with Ga concentration, which resolves the longstanding issue of why the efficiency of CIGS solar cells decreases at high Ga concentration.     Editors' Suggestion Optoelectronic and Ionic Effects on Transport in van der Waals Metal Selenophosphate AgBiP2Se6 Qiankun Li, Shun Wang, Jinshuo Xue, Ziwen Zhou, Yiqi Hu, Zhou Zhou, Zhijian Feng, Qingyu Yan, Yiqing Yu, Yuyan Weng, Rujun Tang, Xiaodong Su, Fengang Zheng, Liang Fang, and Lu You Phys. Rev. Applied 19, 054055 (2023) – Published 16 May 2023 Ionic migration in solid phases is actively explored as a mechanism for neuromorphic computing elements, for example, but direct imaging of the ionic migration and its correlation with macroscopic electronic transport are tricky. Through multiple state-of-the-art microscopy techniques the authors visualize Ag+ migration in AgBiP2Se6, and how it modulates the interfacial barrier to induce switchable diodelike transport in a device. Illuminating the device can be used to switch off its ionic tunability, expanding its functionality. These results provide direct insight into the mechanism of ion-mediated transport in ionically active semiconductors.     Editors' Suggestion Selective Evaporation at the Nozzle Exit in Piezoacoustic Inkjet Printing Maaike Rump, Uddalok Sen, Roger Jeurissen, Hans Reinten, Michel Versluis, Detlef Lohse, Christian Diddens, and Tim Segers Phys. Rev. Applied 19, 054056 (2023) – Published 17 May 2023 "Ugh, not again! Something's wrong with this printer…" In inkjet printing the nozzles in the printhead have intermittent idle periods, during which the ink can evaporate from the nozzle exit. Inks are usually multicomponent, and each component has its own characteristic evaporation rate, resulting in concentration gradients within the ink that can alter the jetting process. Through experiments, analytical modeling, and numerical simulations, the authors unravel the complex physicochemical hydrodynamics associated with the drying of ink at a printhead nozzle.     Editors' Suggestion Automated Extraction of Capacitive Coupling for Quantum Dot Systems Joshua Ziegler, Florian Luthi, Mick Ramsey, Felix Borjans, Guoji Zheng, and Justyna P. Zwolak Phys. Rev. Applied 19, 054077 (2023) – Published 24 May 2023 Single electrons trapped on semiconductor-defined quantum dots (QDs) are a promising platform for large-scale quantum computing. The authors demonstrate a reliable, automated method to identify the capacitive coupling between QDs. The approach combines machine learning with traditional fitting, to take advantage of the desirable properties of each. Also, analysis of cross capacitance may be used for automatic identification of the spurious QDs that occasionally form during device tuning. These techniques can autonomously flag devices with spurious dots near the operating regime, which is crucial information for reliable tuning for qubit operations.     Editors' Suggestion Properties of Donor Qubits in ZnO Formed by Indium-Ion Implantation Xingyi Wang, Christian Zimmermann, Michael Titze, Vasileios Niaouris, Ethan R. Hansen, Samuel H. D'Ambrosia, Lasse Vines, Edward S. Bielejec, and Kai-Mei C. Fu Phys. Rev. Applied 19, 054090 (2023) – Published 30 May 2023 Point-defect spin qubits with an optical interface may become the building blocks of future quantum networks. In this study, ion implantation at low fluences is used to create neutral In donors in ZnO that demonstrate desirable qubit properties. Notably, the authors also observe the signature of the indium electron-nuclear hyperfine interaction, which could enable access to a long-lived nuclear-spin memory. This result is an important step toward scalable formation of donor qubits in ZnO with optical access to a nuclear-spin memory.     Editors' Suggestion Solid-State Microwave Magnetometer with Picotesla-Level Sensitivity Scott T. Alsid, Jennifer M. Schloss, Matthew H. Steinecker, John F. Barry, Andrew C. Maccabe, Guoqing Wang (王国庆), Paola Cappellaro, and Danielle A. Braje Phys. Rev. Applied 19, 054095 (2023) – Published 31 May 2023 Magnetometry with diamond nitrogen-vacancy (NV) ensembles has enabled devices with picotesla sensitivity at static and low-frequency fields, but their performance at higher frequencies lags far behind. The authors solve the technical challenges and demonstrate a microwave-frequency NV magnetometer with picotesla sensitivity, by implementing a pulse scheme for noise cancellation and employing a custom-grown diamond. This sensitivity enhancement could be extended into a far broader range of frequencies using spin-locking and quantum frequency mixing. These results could lead to applications such as near-field antenna characterization and microwave circuitry imaging.     LETTERS Letter Tunable Multimode Lasing in a Fiber Ring Eyal Buks Phys. Rev. Applied 19, L051001 (2023) – Published 8 May 2023 Multimode lasing has a variety of applications in the fields of sensing, spectroscopy, signal processing, and communication. However, controllability of this phenomenon is commonly quite limited. This Letter demonstrates spectrum tunability of multimode lasing in a cooled optical-fiber ring. An intriguing connection between the observed optical spectrum and the sequence of prime numbers is found. This tunability of multimode lasing can be exploited for sensing, communication, and quantum data storage.     Letter Design Rules for Active Control of Narrowband Thermal Emission Using Phase-Change Materials Maxime Giteau, Mitradeep Sarkar, Maria Paula Ayala, Michael T. Enders, and Georgia T. Papadakis Phys. Rev. Applied 19, L051002 (2023) – Published 25 May 2023 The ability to control thermal emission is critical for the development of infrared sources and on-demand energy production, but good emitters usually entail complex architectures. This study presents an analytical framework to design tunable narrowband emitters based on a simple, lithography-free Salisbury screen configuration that includes a phase-change material. Simulated devices show near-unity on-off switching and arbitrarily large spectral shifting between two emission wavelengths, which opens opportunities for tunable infrared sources, and more generally for midinfrared photonics.     ARTICLES Bound States in the Continuum Protected by Reduced Symmetry of Three-Dimensional Open Acoustic Resonators Bin Jia, Lujun Huang, Artem S. Pilipchuk, Sibo Huang, Chen Shen, Almas F. Sadreev, Yong Li, and Andrey E. Miroshnichenko Phys. Rev. Applied 19, 054001 (2023) – Published 1 May 2023   Iterative Configuration of Programmable Unitary Converter Based on Few-Layer Redundant Multiplane Light Conversion Yoshitaka Taguchi, Yunzhuo Wang, Ryota Tanomura, Takuo Tanemura, and Yasuyuki Ozeki Phys. Rev. Applied 19, 054002 (2023) – Published 1 May 2023   Extreme Wave Manipulation via Non-Hermitian Metagratings on Degenerated States Xinsheng Fang, Nengyin Wang, Wenwei Wu, Weibo Wang, Xuewen Yin, Xu Wang, and Yong Li Phys. Rev. Applied 19, 054003 (2023) – Published 1 May 2023   Optomechanical Cooling and Inertial Sensing at Low Frequencies Yanqi Zhang, Adam Hines, Dalziel J. Wilson, and Felipe Guzman Phys. Rev. Applied 19, 054004 (2023) – Published 2 May 2023   Divergence of the Variance of the Optical Phase in Gain-Switched Semiconductor Lasers Described by Stochastic Rate Equations Angel Valle Phys. Rev. Applied 19, 054005 (2023) – Published 2 May 2023   In-Air Microfluidic Strategy for the Production of Sodium Alginate Fibers with Regular Inclusions at Very High Throughput Francesco Marangon, David Baumgartner, and Carole Planchette Phys. Rev. Applied 19, 054006 (2023) – Published 2 May 2023   Editors' Suggestion Monitoring the Charge-Carrier-Occupied Density of States in Disordered Organic Semiconductors under Nonequilibrium Conditions Using Thermally Stimulated Luminescence Spectroscopy Andrei Stankevych, Rishabh Saxena, Alexander Vakhnin, Falk May, Naomi Kinaret, Denis Andrienko, Jan Genoe, Heinz Bässler, Anna Köhler, and Andrey Kadashchuk Phys. Rev. Applied 19, 054007 (2023) – Published 2 May 2023 Injected or photogenerated charge carriers in disordered organic semiconductors relax in energy to form an occupied density of states (ODOS) that is inherently difficult to probe. Thus little is known about nonequilibrium ODOS properties, although they are important in e.g. solar cells and LEDs. This work presents an optical technique for monitoring the ODOS distribution of relaxed charge carriers at low temperatures. The distribution that forms under nonequilibrium conditions is always narrower than that of the full DOS, in a universal ratio of about 2/3 that is reproduced by kinetic Monte Carlo simulations assuming spatially correlated disorder.     Multifunctional Acoustic Device Based on a Phononic Crystal with Independently Controlled Asymmetric Rotating Rods Hyeonu Heo, Arkadii Krokhin, Arup Neogi, Zhiming Cui, Zhihao Yuan, Yihe Hua, Jaehyung Ju, and Ezekiel Walker Phys. Rev. Applied 19, 054008 (2023) – Published 2 May 2023   Effect of Moderate Electropulsing on Nb Multiterminal Transport Bridges S. Marinković, E. A. Abbey, D. A. D. Chaves, S. Collienne, E. Fourneau, L. Jiang, C. Xue, Y. H. Zhou, W. A. Ortiz, M. Motta, N. D. Nguyen, A. Volodin, J. Van de Vondel, and A. V. Silhanek Phys. Rev. Applied 19, 054009 (2023) – Published 3 May 2023   Signal-to-Noise Ratio in Heat-Assisted-Recording Media: A Comparison between Simulations and Experiments Andrea Meo, K. Pituso, P. Kampun, K. Pornpitakpong, A. Suntives, S.E. Rannala, R.W. Chantrell, P. Chureemart, and J. Chureemart Phys. Rev. Applied 19, 054010 (2023) – Published 3 May 2023   Six-Dimensional Beam-Envelope Equations: An Ultrafast Computational Approach for Interactive Modeling of Accelerator Structures M.D. Kelisani, S. Barzegar, P. Craievich, and S. Doebert Phys. Rev. Applied 19, 054011 (2023) – Published 3 May 2023   Simulation of Linear Non-Hermitian Boundary-Value Problems with Quantum Singular-Value Transformation I. Novikau, I.Y. Dodin, and E.A. Startsev Phys. Rev. Applied 19, 054012 (2023) – Published 3 May 2023   Magnetic Nanodevices and Spin-Transport Properties of a Two-Dimensional CrSCl Monolayer Juncai Chen, Yongliang Guo, Chunlan Ma, Shijing Gong, Chuanxi Zhao, Tianxing Wang, Xiao Dong, Zhaoyong Jiao, Shuhong Ma, Guoliang Xu, and Yipeng An Phys. Rev. Applied 19, 054013 (2023) – Published 3 May 2023   Information Segregating Towards Simultaneous Tracking and Imaging Based on Ghost Imaging Long-Kun Du, Shuai Sun, Liang Jiang, Chen Chang, Hui-Zu Lin, and Wei-Tao Liu Phys. Rev. Applied 19, 054014 (2023) – Published 4 May 2023   Quantum Nondemolition Measurement of the Spin Precession of Laser-Trapped 171Yb Atoms Y. A. Yang, T. A. Zheng, S.-Z. Wang, W.-K. Hu, Chang-Ling Zou, T. Xia, and Z.-T. Lu Phys. Rev. Applied 19, 054015 (2023) – Published 4 May 2023   Achiral and Chiral Optical Force Within Topological Optical Lattices Generated with Plasmonic Metasurfaces and Tunable Incident Beam Xi Tang, Yan Kuai, Zetao Fan, Fengya Lu, Haofeng Zang, Junxue Chen, Qiwen Zhan, and Douguo Zhang Phys. Rev. Applied 19, 054016 (2023) – Published 4 May 2023   Interfacial Hole-Charge-Transfer Dynamics in Organic Solar Cells: A Dynamic Viewpoint Xinyu Mu, Yiwen Ji, Hang Yin, and Kun Gao Phys. Rev. Applied 19, 054017 (2023) – Published 4 May 2023   Experimental Demonstration of Velocimetry by Actively Stabilized Coherent Optical Transfer Benjamin P. Dix-Matthews, David R. Gozzard, Skevos F.E. Karpathakis, Shane M. Walsh, Ayden McCann, Alex Frost, and Sascha W. Schediwy Phys. Rev. Applied 19, 054018 (2023) – Published 4 May 2023   Editors' Suggestion Loss-Compensated and Enhanced Midinfrared Interaction-Free Sensing with Undetected Photons Nathan R. Gemmell, Jefferson Flórez, Emma Pearce, Olaf Czerwinski, Chris C. Phillips, Rupert F. Oulton, and Alex S. Clark Phys. Rev. Applied 19, 054019 (2023) – Published 5 May 2023 Sensing with undetected photons is a fascinating technique that allows imaging at wavelengths outside a particular detector's range—enabling, for example, biological imaging without perturbing live cells. In this interference technique, performance can be very sensitive to both sample transmission and losses. This study shows that by balancing the nonlinear interferometer's arms, one can completely recover fringe visibility caused by signal loss. Moreover, intentional unbalancing offers a reduced-interaction regime where the detected power can be 200 times higher than the power reaching the sample, for ultrasensitive midinfrared sensing well below the conventional noise floor.     Gain of a High-Impedance Cavity Coupled to Strongly Driven Semiconductor Quantum Dots Si-Si Gu, Yong-Qiang Xu, Rui Wu, Shun-Li Jiang, Shu-Kun Ye, Ting Lin, Bao-Chuan Wang, Hai-Ou Li, Gang Cao, and Guo-Ping Guo Phys. Rev. Applied 19, 054020 (2023) – Published 5 May 2023   Ultralinear Magnetic-Flux-To-Voltage Conversion in Superconducting Quantum Interference Proximity Transistors Giorgio De Simoni and Francesco Giazotto Phys. Rev. Applied 19, 054021 (2023) – Published 5 May 2023   Surface Ferromagnetism of FeO Nanoparticles Revealed by Operando Magnetoelectrochemical Measurements Hengjun Liu, Fangchao Gu, Xiancheng Sang, Yuanyuan Han, Feihu Zou, Zhaohui Li, Yufeng Qin, Li Cai, Yuanyuan Pan, Qiang Cao, Guo-xing Miao, and Qiang Li Phys. Rev. Applied 19, 054022 (2023) – Published 5 May 2023   Analog Quantum Variational Embedding Classifier Rui Yang, Samuel Bosch, Bobak Kiani, Seth Lloyd, and Adrian Lupascu Phys. Rev. Applied 19, 054023 (2023) – Published 5 May 2023   Criteria for Erroneous Substrate Contribution to the Thermoelectric Performance of Thin Films A. Riss, M. Stöger, M. Parzer, F. Garmroudi, N. Reumann, B. Hinterleitner, T. Mori, and E. Bauer Phys. Rev. Applied 19, 054024 (2023) – Published 8 May 2023   Investigation of the SiO2-SiC Interface Using Low-Energy Muon-Spin-Rotation Spectroscopy Piyush Kumar, Maria Inês Mendes Martins, Marianne Etzelmüller Bathen, Judith Woerle, Thomas Prokscha, and Ulrike Grossner Phys. Rev. Applied 19, 054025 (2023) – Published 8 May 2023   Editors' Suggestion Flip-Chip-Based Microwave Spectroscopy of Andreev Bound States in a Planar Josephson Junction M. Hinderling, D. Sabonis, S. Paredes, D.Z. Haxell, M. Coraiola, S.C. ten Kate, E. Cheah, F. Krizek, R. Schott, W. Wegscheider, and F. Nichele Phys. Rev. Applied 19, 054026 (2023) – Published 8 May 2023 Measurement and coherent manipulation of Andreev bound states (ABSs) in planar superconductor-semiconductor heterostructures could enable gate-controllable, small-footprint superconducting spin qubits with long coherence times. So far, readout capabilities and device coherence have been limited by lossy III−V substrates, but here researchers overcome this limitation with a flip-chip approach to microwave experiments on ABSs. Superconductor-semiconductor devices and microwave resonators are placed on different chips and inductively coupled via a vacuum gap, enabling high-quality readout without sacrificing device properties.     Holographic Single-Particle Imaging for Weakly Scattering, Heterogeneous Nanoscale Objects Abhishek Mall and Kartik Ayyer Phys. Rev. Applied 19, 054027 (2023) – Published 8 May 2023   Editors' Suggestion Acoustic Topological Metamaterials of Large Winding Number Han Liu, Xueqin Huang, Mou Yan, Jiuyang Lu, Weiyin Deng, and Zhengyou Liu Phys. Rev. Applied 19, 054028 (2023) – Published 9 May 2023 Long-range couplings beyond the nearest neighbors can trigger exotic topological phases in metamaterials but have been overlooked in many topological models. The authors study the effect of the long-range couplings on the topological properties, and demonstrate that a Su-Schrieffer-Heeger model including the third nearest coupling, implemented by acoustic metamaterials, can lead to topological phases of large winding numbers. The experimental results show additional topological end states and rotonlike dispersions for sound waves, highlighting the potential of these long-range metamaterials in creating rich topological features.     Zero-Added-Loss Entangled-Photon Multiplexing for Ground- and Space-Based Quantum Networks Kevin C. Chen, Prajit Dhara, Mikkel Heuck, Yuan Lee, Wenhan Dai, Saikat Guha, and Dirk Englund Phys. Rev. Applied 19, 054029 (2023) – Published 9 May 2023   Analytical Bounds for Nonasymptotic Asymmetric State Discrimination Jason L. Pereira, Leonardo Banchi, and Stefano Pirandola Phys. Rev. Applied 19, 054030 (2023) – Published 9 May 2023   Quantum-Enhanced Cluster Detection in Physical Images Jason L. Pereira, Leonardo Banchi, and Stefano Pirandola Phys. Rev. Applied 19, 054031 (2023) – Published 9 May 2023   Accelerating the Assembly of Defect-Free Atomic Arrays with Maximum Parallelisms Shuai Wang, Wenjun Zhang, Tao Zhang, Shuyao Mei, Yuqing Wang, Jiazhong Hu, and Wenlan Chen Phys. Rev. Applied 19, 054032 (2023) – Published 9 May 2023   Custom Nonlinearity Profile for Integrated Quantum Light Sources Salvador Poveda-Hospital, Yves-Alain Peter, and Nicolás Quesada Phys. Rev. Applied 19, 054033 (2023) – Published 10 May 2023   Editors' Suggestion Asynchronous Reversible Computing Unveiled Using Ballistic Shift Registers K.D. Osborn and W. Wustmann Phys. Rev. Applied 19, 054034 (2023) – Published 10 May 2023 Reversible computing exploits thermodynamic principles to replace irreversible Boolean logic with higher-efficiency reversible logic, and could change the future of computers. How best to implement reversible gates and architectures remains an open problem. Superconducting hardware features negligible intrinsic damping, which allows for exploration of many digital circuit types with varying degrees of reversibility. This study simulates Josephson junctions, where single flux quanta serve as bits in this logic type, with the goal of replacing an irreversible shift-register memory. The authors find that asynchronous access, and therefore simpler architecture, is possible.     Hyperuniform Disordered Parametric Loudspeaker Array Kun Tang, Yuqi Wang, Shaobo Wang, Da Gao, Haojie Li, Xindong Liang, Patrick Sebbah, Yibin Li, Jin Zhang, and Junhui Shi Phys. Rev. Applied 19, 054035 (2023) – Published 10 May 2023   Editors' Suggestion Integrated Hybrid Plasmonic-Photonic Device for All-Optical Switching and Reading of Spintronic Memory Hamed Pezeshki, Pingzhi Li, Reinoud Lavrijsen, Martijn Heck, Erwin Bente, Jos van der Tol, and Bert Koopmans Phys. Rev. Applied 19, 054036 (2023) – Published 10 May 2023 This paper provides a key solution for integrating spintronic memories with photonic integrated circuits, for all-optical switching and reading of nanoscale magnetic bits. Problems associated with nonlinear absorption and the intrinsically weak magneto-optical effect are solved by a hybrid scheme, exploiting plasmonic and photonic resonators. Thus the authors have developed a device concept that paves the way toward ultrafast, energy-efficient advanced on-chip applications.     Using Weak Measurements to Synthesize Projective Measurement of Nonconserved Observables of Weakly Coupled Nuclear Spins Ping Wang, Wen Yang, and Renbao Liu Phys. Rev. Applied 19, 054037 (2023) – Published 10 May 2023   Tuning of Higher-Order Topological Corner States in a Honeycomb Elastic Plate Ze Ma, Yang Liu, Yu-Xin Xie, and Yue-Sheng Wang Phys. Rev. Applied 19, 054038 (2023) – Published 11 May 2023   Modeling and Comparative Performance Analysis of Perovskite Solar Cells with Planar or Nanorod SnO2 Electron-Transport Layers Assylan Akhanuly, Iliyas T. Dossyaev, Erik O. Shalenov, Constantinos Valagiannopoulos, Karlygash N. Dzhumagulova, Annie Ng, and Askhat N. Jumabekov Phys. Rev. Applied 19, 054039 (2023) – Published 11 May 2023   Single-Beam Room-Temperature Atomic Magnetometer with Large Bandwidth and Dynamic Range K.K. George Kurian, Sushree S. Sahoo, P.K. Madhu, and G. Rajalakshmi Phys. Rev. Applied 19, 054040 (2023) – Published 11 May 2023   Deep-Subwavelength Direction-Of-Arrival Detection with Enhanced Sensitivity Using Temporal Modulation Tamir Zchut and Yarden Mazor Phys. Rev. Applied 19, 054041 (2023) – Published 11 May 2023   Edge-Illumination X-Ray Dark-Field Tomography Adam Doherty, Savvas Savvidis, Carlos Navarrete-León, Mattia F.M. Gerli, Alessandro Olivo, and Marco Endrizzi Phys. Rev. Applied 19, 054042 (2023) – Published 11 May 2023   Efficient Electronic Excitation Transfer via Phonon-Assisted Dipole-Dipole Coupling in Fe2+:Cr2+:ZnSe Günter Steinmeyer, Jens W. Tomm, Pia Fuertjes, Uwe Griebner, Stanislav S. Balabanov, and Thomas Elsaesser Phys. Rev. Applied 19, 054043 (2023) – Published 12 May 2023   Electrodynamics of Accelerated-Modulation Space-Time Metamaterials Amir Bahrami, Zoé-Lise Deck-Léger, and Christophe Caloz Phys. Rev. Applied 19, 054044 (2023) – Published 12 May 2023   First-Principles Prediction of Potential Candidate Materials MCu3X4 (M = V, Nb, Ta; X=S, Se, Te) for Neuromorphic Computing Baoxing Zhai, Ruiqing Cheng, Tianxing Wang, Li Liu, Lei Yin, Yao Wen, Hao Wang, Sheng Chang, and Jun He Phys. Rev. Applied 19, 054045 (2023) – Published 12 May 2023   Cation-Disorder-Enhanced Unintentional Doping in MgSnN2 Feng Ning, Jing Huang, and Jun Kang Phys. Rev. Applied 19, 054046 (2023) – Published 12 May 2023   Editors' Suggestion Superconducting Microsphere Magnetically Levitated in an Anharmonic Potential with Integrated Magnetic Readout Martí Gutierrez Latorre, Gerard Higgins, Achintya Paradkar, Thilo Bauch, and Witlef Wieczorek Phys. Rev. Applied 19, 054047 (2023) – Published 12 May 2023 The authors present a platform for quantum experiments on levitated particles with masses ranging from nanograms to micrograms. They exploit the Meissner effect to magnetically levitate superconducting microparticles on a chip, in vacuum at ultralow temperatures. Integrated magnetic readout enables coupling to superconducting quantum circuits. This platform allows for precise measurements of force and acceleration, with potential applications in sensing, including the search for dark matter.     Controlled Entanglement Source for Quantum Cryptography Qiang Zeng, Haoyang Wang, Huihong Yuan, Yuanbin Fan, Lai Zhou, Yuanfei Gao, Haiqiang Ma, and Zhiliang Yuan Phys. Rev. Applied 19, 054048 (2023) – Published 15 May 2023   Enhanced Strong Coupling in the Hybrid Dielectric-Metallic Nanoresonator and WS2 Monolayer Khalil As'ham, Ibrahim Al-Ani, Mohammed Alaloul, Salah Abdo, Amer Abdulghani, Wen Lei, Haroldo T. Hattori, Lujun Huang, and Andrey E. Miroshnichenko Phys. Rev. Applied 19, 054049 (2023) – Published 15 May 2023   Baseband Control of Superconducting Qubits with Shared Microwave Drives Peng Zhao, Ruixia Wang, Meng-Jun Hu, Teng Ma, Peng Xu, Yirong Jin, and Haifeng Yu Phys. Rev. Applied 19, 054050 (2023) – Published 15 May 2023   Self-Oscillations in a Nanogap Spin Hall Nano-Oscillator with a Perpendicularly Magnetized External Film Lina Chen, Kaiyuan Zhou, Zui Tao, Zhenyu Gao, Like Liang, Zishuang Li, and Ronghua Liu Phys. Rev. Applied 19, 054051 (2023) – Published 15 May 2023   Editors' Suggestion Induced-Photorefraction Attack against Quantum key Distribution Peng Ye, Wei Chen, Guo-Wei Zhang, Feng-Yu Lu, Fang-Xiang Wang, Guan-Zhong Huang, Shuang Wang, De-Yong He, Zhen-Qiang Yin, Guang-Can Guo, and Zheng-Fu Han Phys. Rev. Applied 19, 054052 (2023) – Published 16 May 2023 Lithium niobate (LN) devices have been widely adopted in systems for quantum key distribution (QKD), but the photorefractive effect in LN devices can be exploited as a potential loophole for malicious attacks by eavesdroppers. This work points out a vulnerability of LN devices of which manufacturers and users must become aware, so that appropriate countermeasures may be implemented. Moreover, the physical mechanism and techniques introduced in this work open an important avenue to the security analysis of QKD systems.     Transverse Magnetic Mode Laser in Photonic Crystal Nanobeam Cavity Taesu Ryu, Hwi-Min Kim, Sang-Woo Ki, Yong-Hee Lee, and Jin-Kyu Yang Phys. Rev. Applied 19, 054053 (2023) – Published 16 May 2023   Editors' Suggestion Chemical Trend of Nonradiative Recombination in Cu(In,Ga)Se2 Alloys Baoying Dou, Stefano Falletta, Jörg Neugebauer, Christoph Freysoldt, Xie Zhang, and Su-Huai Wei Phys. Rev. Applied 19, 054054 (2023) – Published 16 May 2023 Understanding nonradiative recombination is important for improving semiconductor devices. For Cu(In,Ga)Se2 (CIGS) solar cells, antisite defects have long been considered the main recombination centers, yet the underlying mechanism has remained elusive. Here first-principles calculations show that these "killer centers" themselves cannot capture holes efficiently for effective recombination. However, internal conversion to the distorted neutral DX center does open an efficient hole-capture pathway, and DX's stability in CIGS increases with Ga concentration, which resolves the longstanding issue of why the efficiency of CIGS solar cells decreases at high Ga concentration.     Editors' Suggestion Optoelectronic and Ionic Effects on Transport in van der Waals Metal Selenophosphate AgBiP2Se6 Qiankun Li, Shun Wang, Jinshuo Xue, Ziwen Zhou, Yiqi Hu, Zhou Zhou, Zhijian Feng, Qingyu Yan, Yiqing Yu, Yuyan Weng, Rujun Tang, Xiaodong Su, Fengang Zheng, Liang Fang, and Lu You Phys. Rev. Applied 19, 054055 (2023) – Published 16 May 2023 Ionic migration in solid phases is actively explored as a mechanism for neuromorphic computing elements, for example, but direct imaging of the ionic migration and its correlation with macroscopic electronic transport are tricky. Through multiple state-of-the-art microscopy techniques the authors visualize Ag+ migration in AgBiP2Se6, and how it modulates the interfacial barrier to induce switchable diodelike transport in a device. Illuminating the device can be used to switch off its ionic tunability, expanding its functionality. These results provide direct insight into the mechanism of ion-mediated transport in ionically active semiconductors.     Editors' Suggestion Selective Evaporation at the Nozzle Exit in Piezoacoustic Inkjet Printing Maaike Rump, Uddalok Sen, Roger Jeurissen, Hans Reinten, Michel Versluis, Detlef Lohse, Christian Diddens, and Tim Segers Phys. Rev. Applied 19, 054056 (2023) – Published 17 May 2023 "Ugh, not again! Something's wrong with this printer…" In inkjet printing the nozzles in the printhead have intermittent idle periods, during which the ink can evaporate from the nozzle exit. Inks are usually multicomponent, and each component has its own characteristic evaporation rate, resulting in concentration gradients within the ink that can alter the jetting process. Through experiments, analytical modeling, and numerical simulations, the authors unravel the complex physicochemical hydrodynamics associated with the drying of ink at a printhead nozzle.     Numerical Simulation of the Radiation Force from Transient Acoustic Fields: Application to Laser-Guided Acoustic Tweezers Shuhan Chen, Qing Wang, Qi Wang, Jia Zhou, and Antoine Riaud Phys. Rev. Applied 19, 054057 (2023) – Published 17 May 2023   Pressure-Driven Explosive Energy Conversion in Lead-Free Ferroelectric (Ag,K)NbO3 Kai Dai (戴凯), Anyang Cui (崔安阳), Zhen Liu (刘振), Li Chen (陈立), Yuting Yan (严雨婷), Lichen Gao (高立宸), Kai Jiang (姜凯), Jinzhong Zhang (张金中), Yawei Li (李亚巍), Genshui Wang (王根水), Xianlin Dong (董显林), and Zhigao Hu (胡志高) Phys. Rev. Applied 19, 054058 (2023) – Published 17 May 2023   Experimental and Theoretical Study of Dynamic Polarizabilities in the 5S1/2–5D5/2 Clock Transition in Rubidium-87 and Determination of Electric Dipole Matrix Elements Rhona Hamilton, Benjamin M. Roberts, Sarah K. Scholten, Clayton Locke, Andre N. Luiten, Jacinda S.M. Ginges, and Christopher Perrella Phys. Rev. Applied 19, 054059 (2023) – Published 18 May 2023   Hybrid High-Dimensional Quantum Key Distribution for a Composable Quantum Network Fang-Xiang Wang, Qi-Hang Lu, Wei Chen, Shuang Wang, Haiyang Fu, Yinjie Lu, Penglei Hao, Jia-Lin Chen, Wenjing Ding, Jianyu Ma, De-Yong He, Zhen-Qiang Yin, Zheng Zhou, Guang-Can Guo, and Zheng-Fu Han Phys. Rev. Applied 19, 054060 (2023) – Published 18 May 2023   Ferroelectric Nanopillar Field-Effect Transistors: Quantum Transport Simulations Based on a Three-Dimensional Phase Field Hyeongu Lee, Yoon-Suk Kim, and Mincheol Shin Phys. Rev. Applied 19, 054061 (2023) – Published 18 May 2023   Multislice Electron Tomography Using Four-Dimensional Scanning Transmission Electron Microscopy Juhyeok Lee, Moosung Lee, YongKeun Park, Colin Ophus, and Yongsoo Yang Phys. Rev. Applied 19, 054062 (2023) – Published 18 May 2023   Noncryogenic Quantum Repeaters with hot Hybrid Alkali-Noble Gases Jia-Wei Ji, Faezeh Kimiaee Asadi, Khabat Heshami, and Christoph Simon Phys. Rev. Applied 19, 054063 (2023) – Published 19 May 2023   Enhanced Ferroelectric Polarization in Epitaxial BiFeO3−BiMg2/3Nb1/3O3 Films Yajie Han, Zhijie Liu, Zhiyu Liu, Hongying Chen, Pengxiang Hou, Jiayi Li, Yuqi Wang, Yu Deng, Yurong Yang, and Di Wu Phys. Rev. Applied 19, 054064 (2023) – Published 19 May 2023   Convolution Operation on Pancharatnam-Berry Coding Metasurfaces in Visible Band Song Luo, Zhao Xu, Long Zhang, Zhengyong Song, and Zhanghai Chen Phys. Rev. Applied 19, 054065 (2023) – Published 19 May 2023   Generation of Large-Bandwidth High-Power X-Ray Free-Electron-Laser Pulses Using a Hollow-Channel Plasma Bo Peng, Chao Feng, Zhen Wang, Jianfei Hua, Yipeng Wu, Haixiao Deng, Fei Li, Wei Lu, and Zhentang Zhao Phys. Rev. Applied 19, 054066 (2023) – Published 19 May 2023   Evolution Between Exciton and Exciplex Emission in Planar Heterojunction OLEDs with Different Hole-Injection Characteristics Xi Zhao, Jing Chen, Yuting Wu, Fuxian Wei, Huiyao Wang, Xiaoli Chen, and Zuhong Xiong Phys. Rev. Applied 19, 054067 (2023) – Published 22 May 2023   Two-Dimensional Layered Structures of Group-V Elements as Transparent Conductors: Insight from a First-Principles Study Gurudayal Behera, Jiban Kangsabanik, Brahmananda Chakraborty, K.R. Balasubramaniam, and Aftab Alam Phys. Rev. Applied 19, 054068 (2023) – Published 22 May 2023   Manifestation of the Coupling Phase in Microwave Cavity Magnonics Alan Gardin, Jeremy Bourhill, Vincent Vlaminck, Christian Person, Christophe Fumeaux, Vincent Castel, and Giuseppe C. Tettamanzi Phys. Rev. Applied 19, 054069 (2023) – Published 22 May 2023   Advantages of Asynchronous Measurement-Device-Independent Quantum Key Distribution in Intercity Networks Yuan-Mei Xie, Jun-Lin Bai, Yu-Shuo Lu, Chen-Xun Weng, Hua-Lei Yin, and Zeng-Bing Chen Phys. Rev. Applied 19, 054070 (2023) – Published 22 May 2023   Phononic Crystal Cavity Magnomechanics Daiki Hatanaka, Motoki Asano, Hajime Okamoto, and Hiroshi Yamaguchi Phys. Rev. Applied 19, 054071 (2023) – Published 22 May 2023   Experimental Confirmation of the Optoelectronic Reciprocity Theorem in High-Efficiency CuIn1−xGaxSe2 Solar Cells Hajime Shibata, Jiro Nishinaga, Yukiko Kamikawa, Hitoshi Tampo, Takehiko Nagai, Takashi Koida, Shogo Ishizuka, Toshimitsu Mochizuki, and Masafumi Yamaguchi Phys. Rev. Applied 19, 054072 (2023) – Published 23 May 2023   Prompt Photofission Neutron Detection in Depleted Uranium A.J. Jinia, T.E. Maurer, C.A. Meert, O.V. Pakari, S.D. Clarke, H.S. Kim, D.D. Wentzloff, and S.A. Pozzi Phys. Rev. Applied 19, 054073 (2023) – Published 23 May 2023   Resolution Limits of Resonant Sensors Tomás Manzaneque, Murali K. Ghatkesar, Farbod Alijani, Minxing Xu, Richard A. Norte, and Peter G. Steeneken Phys. Rev. Applied 19, 054074 (2023) – Published 23 May 2023   Selective Detection in Impulsive Low-Frequency Raman Imaging Using Shaped Probe Pulses Siddarth Shivkumar, Dekel Ranann, Samuel Metais, Sisira Suresh, Nicolas Forget, Randy Bartels, Dan Oron, and Hervé Rigneault Phys. Rev. Applied 19, 054075 (2023) – Published 23 May 2023   Handheld Device for Noncontact Thermometry via Optically Detected Magnetic Resonance of Proximate Diamond Sensors Gabriel J. Abrahams, Ethan Ellul, Islay O. Robertson, Asma Khalid, Andrew D. Greentree, Brant C. Gibson, and Jean-Philippe Tetienne Phys. Rev. Applied 19, 054076 (2023) – Published 23 May 2023   Editors' Suggestion Automated Extraction of Capacitive Coupling for Quantum Dot Systems Joshua Ziegler, Florian Luthi, Mick Ramsey, Felix Borjans, Guoji Zheng, and Justyna P. Zwolak Phys. Rev. Applied 19, 054077 (2023) – Published 24 May 2023 Single electrons trapped on semiconductor-defined quantum dots (QDs) are a promising platform for large-scale quantum computing. The authors demonstrate a reliable, automated method to identify the capacitive coupling between QDs. The approach combines machine learning with traditional fitting, to take advantage of the desirable properties of each. Also, analysis of cross capacitance may be used for automatic identification of the spurious QDs that occasionally form during device tuning. These techniques can autonomously flag devices with spurious dots near the operating regime, which is crucial information for reliable tuning for qubit operations.     Deep Learning Approach to the Texture Optimization Problem for Friction Control in Lubricated Contacts Alexandre Silva, Veniero Lenzi, Sergey Pyrlin, Sandra Carvalho, Albano Cavaleiro, and Luís Marques Phys. Rev. Applied 19, 054078 (2023) – Published 24 May 2023   Polarization Entanglement from Parametric Down-conversion with an LED Pump Wuhong Zhang, Diefei Xu, and Lixiang Chen Phys. Rev. Applied 19, 054079 (2023) – Published 24 May 2023   Protecting Quantum Modes in Optical Fibers M.A.T. Butt, P. Roth, G.K.L. Wong, M.H. Frosz, L.L. Sánchez-Soto, E.A. Anashkina, A.V. Andrianov, P. Banzer, P.St.J. Russell, and G. Leuchs Phys. Rev. Applied 19, 054080 (2023) – Published 24 May 2023   Twin Metamaterials: Inversion Symmetry, Reverse Magnetism, and Interface States Xiaodong Sun, Xinyu Zhao, Jingguang Chen, Fang Guan, and Xinhua Hu Phys. Rev. Applied 19, 054081 (2023) – Published 24 May 2023   Clock Synchronization with Correlated Photons Christopher Spiess, Sebastian Töpfer, Sakshi Sharma, Andrej Kržič, Meritxell Cabrejo-Ponce, Uday Chandrashekara, Nico Lennart Döll, Daniel Rieländer, and Fabian Steinlechner Phys. Rev. Applied 19, 054082 (2023) – Published 25 May 2023   Stress-Induced Transformations of Polarization Switching in CuInP2S6 Nanoparticles Anna N. Morozovska, Eugene A. Eliseev, Mykola E. Yelisieiev, Yulian M. Vysochanskii, and Dean R. Evans Phys. Rev. Applied 19, 054083 (2023) – Published 25 May 2023   Non-Gaussian Reconciliation for Continuous-Variable Quantum Key Distribution Xiangyu Wang, Menghao Xu, Yin Zhao, Ziyang Chen, Song Yu, and Hong Guo Phys. Rev. Applied 19, 054084 (2023) – Published 25 May 2023   Generation of a Chirp-Controlled Terahertz Pulse by a Tapered Corrugated Wakefield Structure Yifan Liang, Sergey Antipov, Qili Tian, Lixin Yan, Yingchao Du, Cheng Cheng, Renkai Li, Wenhui Huang, and Chuanxiang Tang Phys. Rev. Applied 19, 054085 (2023) – Published 26 May 2023   Active Terahertz-Beam Deflection in a Double-Sided All-Dielectric Metadevice Modulated by both Polarization Rotation and Optical Pumping Jiayue Liu, Fei Fan, Zhiyu Tan, Huijun Zhao, Jierong Cheng, and Shengjiang Chang Phys. Rev. Applied 19, 054086 (2023) – Published 26 May 2023   Nonequilibrium Quasiparticle Distribution in Superconducting Resonators: An Analytical Approach P.B. Fischer and G. Catelani Phys. Rev. Applied 19, 054087 (2023) – Published 26 May 2023   Near-Field Sensing of Microwave Magnetic Field Phase Difference Enabled by N-V-Center Spins Mingxin Li, Ning Zhang, Lixia Xu, Jixing Zhang, Guodong Bian, Pengcheng Fan, Sixian Wang, and Heng Yuan Phys. Rev. Applied 19, 054088 (2023) – Published 26 May 2023   Reconfigurable Dipolar Spin-Wave Coupling in a Bilateral Yttrium Iron Garnet Structure A.A. Grachev, S.E. Sheshukova, M.P. Kostylev, S.A. Nikitov, and A.V. Sadovnikov Phys. Rev. Applied 19, 054089 (2023) – Published 30 May 2023   Editors' Suggestion Properties of Donor Qubits in ZnO Formed by Indium-Ion Implantation Xingyi Wang, Christian Zimmermann, Michael Titze, Vasileios Niaouris, Ethan R. Hansen, Samuel H. D'Ambrosia, Lasse Vines, Edward S. Bielejec, and Kai-Mei C. Fu Phys. Rev. Applied 19, 054090 (2023) – Published 30 May 2023 Point-defect spin qubits with an optical interface may become the building blocks of future quantum networks. In this study, ion implantation at low fluences is used to create neutral In donors in ZnO that demonstrate desirable qubit properties. Notably, the authors also observe the signature of the indium electron-nuclear hyperfine interaction, which could enable access to a long-lived nuclear-spin memory. This result is an important step toward scalable formation of donor qubits in ZnO with optical access to a nuclear-spin memory.     Fast Feedback Control of Mechanical Motion Using Circuit Optomechanics Cheng Wang, Louise Banniard, Laure Mercier de Lépinay, and Mika A. Sillanpää Phys. Rev. Applied 19, 054091 (2023) – Published 30 May 2023   Spectrally Resolved Hong-Ou-Mandel Interferometry with Discrete Color Entanglement Congzhen Chen, Yuanyuan Chen, and Lixiang Chen Phys. Rev. Applied 19, 054092 (2023) – Published 30 May 2023   Quantum-Interference-Enhanced Phonon Laser in Cavity Optomechanics Changyong Lei and Jie Ren Phys. Rev. Applied 19, 054093 (2023) – Published 31 May 2023   Ultrahigh-Density Double-Atom Catalyst with Spin Moment as an Activity Descriptor for the Oxygen-Reduction Reaction Peng Lv, Wenjing Lv, Donghai Wu, Gang Tang, Xunwang Yan, Zhansheng Lu, and Dongwei Ma Phys. Rev. Applied 19, 054094 (2023) – Published 31 May 2023   Editors' Suggestion Solid-State Microwave Magnetometer with Picotesla-Level Sensitivity Scott T. Alsid, Jennifer M. Schloss, Matthew H. Steinecker, John F. Barry, Andrew C. Maccabe, Guoqing Wang (王国庆), Paola Cappellaro, and Danielle A. Braje Phys. Rev. Applied 19, 054095 (2023) – Published 31 May 2023 Magnetometry with diamond nitrogen-vacancy (NV) ensembles has enabled devices with picotesla sensitivity at static and low-frequency fields, but their performance at higher frequencies lags far behind. The authors solve the technical challenges and demonstrate a microwave-frequency NV magnetometer with picotesla sensitivity, by implementing a pulse scheme for noise cancellation and employing a custom-grown diamond. This sensitivity enhancement could be extended into a far broader range of frequencies using spin-locking and quantum frequency mixing. These results could lead to applications such as near-field antenna characterization and microwave circuitry imaging.     Space-Time Thermal Binary Coding by a Spatiotemporally Modulated Metashell Fubao Yang, Peng Jin, Min Lei, Gaole Dai, Jun Wang, and Jiping Huang Phys. Rev. Applied 19, 054096 (2023) – Published 31 May 2023     American Physical Society: 1 Physics Ellipse, College Park, MD 20740 ©2023 American Physical Society | All rights reserved   You are receiving this email because you are subscribed to Table of Content alerts. If you no longer wish to receive these emails, please update your preferences.