Physical Review Applied - August 2023

Physical Review Applied View Email Online   Volume 20, Issue 2 August 2023   View Issue   Advertisement New Webinar Series for Industry, Undergrads APS has launched two new webinar series. The new Activating Industry Careers series will feature Dr. Peter S. Fisk with "Show Me the Money! Compensation in the Physics Industry" on September 19. The PULSE series for undergraduate students will launch with "Possible Research Areas" on September 27. Register now.     Advertisement Now Accepting Abstracts for March Meeting 2024 Abstract submissions are officially open for the APS March Meeting 2024! Showcase your work to a global audience of physicists, scientists, and students representing 32 APS Units and Committees and explore groundbreaking research from industry, academia, and major labs. Start preparing your abstract and be sure to submit it by October 20. Submit an abstract.     Advertisement Call for papers: Special Collection on Machine Learning in Structural Biology In collaboration with the MLSB workshop to be held at NeurIPS December 10-16 in New Orleans, LA, PRX Life seeks manuscripts that cover a wide range of machine learning in structural biology, including the modeling of protein dynamics and the comprehension of protein folding physics, among others. The Collection is open to Everyone, whether you participated in the MLSB workshop or not. Article publication charges (APCs) are waived for all accepted manuscripts in this Special Collection. Learn more.     Not an APS member? Join today to start connecting with a community of more than 50,000 physicists.   HIGHLIGHTED ARTICLES Featured in Physics Editors' Suggestion Satellite-Relayed Global Quantum Communication without Quantum Memory Sumit Goswami and Sayandip Dhara Phys. Rev. Applied 20, 024048 (2023) – Published 18 August 2023 Synopsis:Global Quantum Communication via a Satellite Train Long-distance quantum communication can usher in hack-proof communication, enable precision quantum sensing technologies, and ultimately yield a quantum Internet. Existing protocols for global-scale quantum communication demand high-performance quantum memories, which have limited communication distance. This study proposes a chain of satellites in low Earth orbit to directly transmit photonic qubits through space, using the satellites like optical lenses to counter diffraction loss. Simulations and analysis of different quantum communication protocols using this relay system show the feasibility of building a global quantum network of only satellites, without requiring quantum memories.     Editors' Suggestion Carrier Mobility up to 106 cm2 V−1 s−1 Measured in Single-Crystal Diamond by the Time-of-Flight Electron-Beam-Induced-Current Technique A. Portier, F. Donatini, D. Dauvergne, M.-L. Gallin-Martel, and J. Pernot Phys. Rev. Applied 20, 024037 (2023) – Published 16 August 2023 Diamond is hard: Carrier mobility in diamond is a key parameter for the development of future electronics and quantum devices, yet the low-field mobility of holes in ultrapure diamond is unknown, below 80 K or so. This study presents a time-of-flight technique using electron-beam-induced current to measure the velocities of electrons and holes as a function of temperature and electric field. A low-field mobility of (1.03±0.05)×106 cm2 V−1 s−1 is measured for holes at 13 K, demonstrating that diamond is a suitable material for ballistic transport of charge carriers at a length scale of greater than 10 μm.     Editors' Suggestion Ultrastrong Magnon-Photon Coupling Achieved by Magnetic Films in Contact with Superconducting Resonators Alberto Ghirri, Claudio Bonizzoni, Maksut Maksutoglu, Alberto Mercurio, Omar Di Stefano, Salvatore Savasta, and Marco Affronte Phys. Rev. Applied 20, 024039 (2023) – Published 16 August 2023 Controlling magnon-photon coupling is one of the keys to enabling cavity magnonics in several emerging applications, where the realization of all-on-chip devices is crucial to integrating magnonic systems with microwave circuits. This study shows that ultrastrong coupling can be achieved with a ferrimagnetic film in direct contact with a superconducting resonator. Analysis shows that the diamagnetic coupling term is vanishingly small, suggesting a potential route to superradiant phase transitions. These results ought to be relevant for microwave technologies including memory devices, microwave-to-optical transducers, haloscopes for axion detection, and coherent microwave sources.     Editors' Suggestion Quantum Annealing Optimization Method for the Design of Barrier Materials in Magnetic Tunnel Junctions Kenji Nawa, Tsuyoshi Suzuki, Keisuke Masuda, Shu Tanaka, and Yoshio Miura Phys. Rev. Applied 20, 024044 (2023) – Published 17 August 2023 Materials informatics has boosted materials design, but the search for optimal atomic configurations in spintronic devices is challenging, due to many degrees of freedom and the need to design at the atomic level. Quantum annealing offers a breakthrough for such challenges in huge search spaces. The authors propose a combination of quantum annealing, machine learning, and first-principles calculations that is computationally cheaper than ordinary machine learning in designing atomically disordered spinel oxides (promising materials for magnetoresistive devices). Furthermore, the origins of physical properties of interest can be interpreted from the obtained Ising model Hamiltonian.     Editors' Suggestion Characterization of Microwave Loss Using Multimode Superconducting Resonators Chan U Lei, Suhas Ganjam, Lev Krayzman, Archan Banerjee, Kim Kisslinger, Sooyeon Hwang, Luigi Frunzio, and Robert J. Schoelkopf Phys. Rev. Applied 20, 024045 (2023) – Published 18 August 2023 Understanding the loss mechanisms in materials is crucial to improving coherence in superconducting quantum circuits. The authors present a technique based on multimode superconducting resonators that distinguishes and quantifies all loss channels in relevant materials. Applying this technique reveals that both chemical etching and diamond turning reduce surface losses in high-purity aluminum, while coating diamond-turned surfaces with thin-film aluminum significantly improves joint quality. This method can be used to design on-chip superconducting devices to characterize microwave losses, as well as to quantify the effects of fabrication processes.     Editors' Suggestion Quantum Microwave Parametric Interferometer F. Kronowetter, F. Fesquet, M. Renger, K. Honasoge, Y. Nojiri, K. Inomata, Y. Nakamura, A. Marx, R. Gross, and K.G. Fedorov Phys. Rev. Applied 20, 024049 (2023) – Published 21 August 2023 Interferometers are extremely powerful tools for precision measurements in a plethora of research fields and applications, such as the detection of gravitational waves. The authors present experimental realization of a nonlinear microwave interferometer based on superconducting quantum circuits. Useful properties of this device range from a signal-to-noise ratio that exceeds the shot-noise limit, to sub-Poissonian intensity fluctuations between its outputs. These intriguing findings will promote applications ranging from quantum illumination to the search for axionic dark matter.     Editors' Suggestion Sensing Rotations with Multiplane Light Conversion M. Eriksson, A.Z. Goldberg, M. Hiekkamäki, F. Bouchard, J. Rehacek, Z. Hradil, G. Leuchs, R. Fickler, and L.L. Sánchez-Soto Phys. Rev. Applied 20, 024052 (2023) – Published 21 August 2023 Because any unitary operation is a rotation, in a sense measuring rotation is the most universal sort of measurement. In practice, precise rotation measurements are essential, from magnetometry to inertial navigation to fundamental tests of physics. The ultimate limits for simultaneously measuring all of the components of a rotation are dictated by quantum theory, and here are tested using light's orbital angular momentum and multiplane light conversion. Rotated states are projected onto a set of coherent states to deduce the rotation parameters, using a method inspired by GPS. The results are near the ultimate limits of quantum precision.     Editors' Suggestion Quantum Time Transfer: A Practical Method for Lossy and Noisy Channels Randy Lafler and R. Nicholas Lanning Phys. Rev. Applied 20, 024064 (2023) – Published 25 August 2023 Precise clock synchronization is important for quantum networking, enhanced position, navigation, timing, and other applications that require clock synchronization better than GPS, but remains an ongoing challenge. The authors propose a solution using hardware native to quantum networking. This quantum-time-transfer technique can quickly achieve picosecond-level clock synchronization despite relatively low-performance quantum-photon sources and detection equipment. Furthermore, it is robust against the high loss and high noise channel conditions representative of daytime space-Earth links, and could provide high-precision secure timing in GPS-denied environments.     Editors' Suggestion Quantum-Enhanced Pattern Recognition Giuseppe Ortolano, Carmine Napoli, Cillian Harney, Stefano Pirandola, Giuseppe Leonetti, Pauline Boucher, Elena Losero, Marco Genovese, and Ivano Ruo-Berchera Phys. Rev. Applied 20, 024072 (2023) – Published 29 August 2023 This work demonstrates experimentally that the advantage gained in sensing using quantum photonic resources can be sustained, and even amplified, through complex classical post-processing aimed at extracting relevant features. Despite the very different architectures of the classical algorithms tested here, the quantum advantage in classification performance appears to be robust and qualitatively very consistent. Thus the results argue for widespread use of quantum sensing technologies, in any field that deals with pattern recognition in large datasets.     Editors' Suggestion Quantum Hacking Against Discrete-Modulated Continuous-Variable Quantum Key Distribution Using Modified Local Oscillator Intensity Attack with Random Fluctuations Lu Fan, Yiming Bian, Mingze Wu, Yichen Zhang, and Song Yu Phys. Rev. Applied 20, 024073 (2023) – Published 29 August 2023 Know your enemy: In practical inline systems for continuous-variable quantum key distribution, the local oscillator (LO) is particularly vulnerable to being controlled by hackers. The authors propose a modified LO intensity attack with random fluctuations, which has the advantage of evading the commonly used monitoring technologies. Moreover, similar quantum hacking could also target the pilot intensity in a LO system, which indicates the strong adaptability and practicability of the proposed attack. This work could be of great significance to the practical security of continuous-variable quantum key distribution.     Editors' Suggestion 2×10−13 Fractional Laser-Frequency Stability with a 7-cm Unequal-Arm Mach-Zehnder Interferometer Victor Huarcaya, Miguel Dovale Álvarez, Daniel Penkert, Stefano Gozzo, Pablo Martínez Cano, Kohei Yamamoto, Juan José Esteban Delgado, Moritz Mehmet, Karsten Danzmann, and Gerhard Heinzel Phys. Rev. Applied 20, 024078 (2023) – Published 31 August 2023 To reach subpicometer sensitivities in the millihertz frequency range, inertial sensors based on laser interferometry must reduce laser-frequency noise, typically by using ultrastable optical reference cavities or atomic or molecular references. This study presents a simpler solution: a quasimonolithic Mach-Zehnder interferometer with intentionally mismatched arm lengths, plus two photodiodes at balanced output ports. Here structural stability is transferred to laser frequency via amplification, integration, and feedback of the balanced-detection signal. Improvements to the thermal design and isolation of a compact setup allow stabilities similar to those of reference systems.     Editors' Suggestion Piezostrain as a Local Handle to Control Gyrotropic Dynamics of Magnetic Vortices Vadym Iurchuk, Serhii Sorokin, Jürgen Lindner, Jürgen Fassbender, and Attila Kákay Phys. Rev. Applied 20, 024080 (2023) – Published 31 August 2023 Power-saving solutions are sought for manipulating the dynamics of magnetic microelements in emerging spintronic rf devices. The authors show that local piezostrain is an efficient extrinsic means to control the gyrotropic motion of magnetic vortices, with low voltages and all-electrical operation. In addition, they find that the frequency-strain tuning ratio scales inversely with the size of the vortex-based microdevice. Their approach offers an extra dimension in the frequency tuning of vortex-based spintronic oscillators.     LETTERS Letter Antiferromagnetic Resonances in Superconductor-Ferromagnet Multilayers I.A. Golovchanskiy, V.V. Ryazanov, and V.S. Stolyarov Phys. Rev. Applied 20, L021001 (2023) – Published 1 August 2023 Control over the ferromagnetic resonance frequency is a key ingredient for applications of magnetic structures in the fields of spintronics and magnonics. In this study the authors uncover rich magnetization dynamics and high resonance frequencies in electronically interacting hybrid superconductor-ferromagnetic multilayers, where additional magnetic anisotropy and unconventional antiferromagneticlike interaction between ferromagnetic layers are realized via circulating superconducting currents. These phenomena point to wide applicability of such multilayers in magnonics, as well as integration into various superconducting hybrid systems.     Letter Room-Temperature Electron-Hole Condensation in Direct-Band-Gap Semiconductor Nanocrystals Ajay K. Poonia, Pushpendra Yadav, Barnali Mondal, Dipendranath Mandal, Pravrati Taank, Megha Shrivastava, Angshuman Nag, Amit Agarwal, and K.V. Adarsh Phys. Rev. Applied 20, L021002 (2023) – Published 2 August 2023 The electron-hole liquid is an exotic state of matter in which a gas of excitons condenses to form electronic droplets. So far, its formation has been limited to materials with indirect band gaps at cryogenic temperatures. In this Letter researchers demonstrate the existence of an electron-hole liquid at room temperature, by utilizing the electron-phonon interaction in a film of coupled nanocrystals of direct-band-gap CsPbBrI2. The resulting liquid state shows remarkable stability under ambient conditions, and opens up possibilities for optoelectronic applications such as lasers and LEDs that do not require low temperatures.     Letter High-Order Exceptional Points in Pseudo-Hermitian Radio-Frequency Circuits Ke Yin, Xianglin Hao, Yuangen Huang, Jianlong Zou, Xikui Ma, and Tianyu Dong Phys. Rev. Applied 20, L021003 (2023) – Published 15 August 2023 This Letter proposes a versatile approach for using high-order exceptional points (EP) with enhanced sensitivity in LC-based wireless sensing systems. EPs are remarkably responsive to minute parameter variations, which suggests promising applications in sensors. Whereas previous schemes have relied on PT-symmetric circuits comprised of coupled gain-neutral-loss RLC resonators, here the authors investigate a broader pseudo-Hermitian system configuration involving gain-loss-loss elements. This generalized method for EP implementation in electronic circuits provides a more accurate model for practical wireless sensing systems, with significant implications for wireless communication.     Letter Axial Correlation Revivals and Number Factorization with Structured Random Waves Xin Liu, Chunhao Liang, Yangjian Cai, and Sergey A. Ponomarenko Phys. Rev. Applied 20, L021004 (2023) – Published 22 August 2023 Number factorization is instrumental in cybersecurity and machine-learning applications, for example. Although quantum protocols have enabled remarkable breakthroughs here, their limitations have spurred classical alternatives undergirded by the physics of superposition of coherent waves, but these are extremely difficult to implement under realistic noisy environments. The authors propose and demonstrate with random optical waves a factoring protocol that is free from this shortcoming. Their theory also exposes a fundamental link between statistical optics and number theory. This protocol may trigger advances in factoring with acoustic and matter waves as well.     ARTICLES All-Optical Nonzero-Field Vector Magnetic Sensor for Magnetoencephalography M.V. Petrenko, A.S. Pazgalev, and A.K. Vershovskii Phys. Rev. Applied 20, 024001 (2023) – Published 1 August 2023   Nanosecond True-Random-Number Generation with Superparamagnetic Tunnel Junctions: Identification of Joule Heating and Spin-Transfer-Torque Effects Leo Schnitzspan, Mathias Kläui, and Gerhard Jakob Phys. Rev. Applied 20, 024002 (2023) – Published 1 August 2023   Time-Resolved Eye Diagrams to Exploit Hidden High-Energy Branches in a Nonlinear Wideband Vibration-Energy Harvester Kankana Paul, Saibal Roy, and Andreas Amann Phys. Rev. Applied 20, 024003 (2023) – Published 1 August 2023   Dynamics of the Generation of Independent Orbital-Angular-Momentum Modes in a Photonic Chip J.M. de Oliveira, J.C.A. Rocha, L.M.S. Santos, J.V.S. Moura, A.J. Jesus-Silva, and E.J.S. Fonseca Phys. Rev. Applied 20, 024004 (2023) – Published 2 August 2023   Evaluating Spintronics-Compatible Implementations of Ising Machines Andrea Grimaldi, Luciano Mazza, Eleonora Raimondo, Pietro Tullo, Davi Rodrigues, Kerem Y. Camsari, Vincenza Crupi, Mario Carpentieri, Vito Puliafito, and Giovanni Finocchio Phys. Rev. Applied 20, 024005 (2023) – Published 2 August 2023   Low-Overhead Quantum Bus with Coupling Beyond the Nearest Neighbor via Mediated Effective Capacitance Yariv Yanay and Charles Tahan Phys. Rev. Applied 20, 024006 (2023) – Published 2 August 2023   Partial Coherence and Coherence Length in Stimulated Parametric Down-Conversion G.H. dos Santos, R.C. Souza Pimenta, R.M. Gomes, S.P. Walborn, and P.H. Souto Ribeiro Phys. Rev. Applied 20, 024007 (2023) – Published 3 August 2023   Failure Precursors and Failure Mechanisms in Hierarchically Patterned Paper Sheets in Tensile and Creep Loading Mahshid Pournajar, Tero Mäkinen, Seyyed Ahmad Hosseini, Paolo Moretti, Mikko Alava, and Michael Zaiser Phys. Rev. Applied 20, 024008 (2023) – Published 3 August 2023   All-Electrical Operation of a Curie Switch at Room Temperature Vadym Iurchuk, Oleksii Kozlov, Serhii Sorokin, Shengqiang Zhou, Jürgen Lindner, Serhii Reshetniak, Anatolii Kravets, Dmytro Polishchuk, and Vladislav Korenivski Phys. Rev. Applied 20, 024009 (2023) – Published 3 August 2023   Time-Resolved Vector-Field Imaging of Spin-Wave Propagation in Permalloy Stripes Using Wide-Field Magneto-Optical Kerr Microscopy Takeshi Ogasawara Phys. Rev. Applied 20, 024010 (2023) – Published 3 August 2023   Two-Fluxonium Cross-Resonance Gate Ebru Dogan, Dario Rosenstock, Loïck Le Guevel, Haonan Xiong, Raymond A. Mencia, Aaron Somoroff, Konstantin N. Nesterov, Maxim G. Vavilov, Vladimir E. Manucharyan, and Chen Wang Phys. Rev. Applied 20, 024011 (2023) – Published 4 August 2023   Explicit Modeling and Optimization of Acoustic Metalenses for Baffled Sources Théo Cavalieri, Vicent Romero-García, Manuel Melon, Jean-Philippe Groby, and Jean-Christophe Chamard Phys. Rev. Applied 20, 024012 (2023) – Published 4 August 2023   Determining the Momentum Width of a Trapped Bose-Einstein Condensate by One-Dimensional-Optical-Lattice Pulse Sequences Angang Liang, Shuyu Zhou, Yu Xie, Mingshan Huang, Xinping Xu, Su Fang, Dijun Chen, Tang Li, Bin Wang, Weibiao Chen, and Liang Liu Phys. Rev. Applied 20, 024013 (2023) – Published 4 August 2023   Polarization-Independent Second-Order Photonic Topological Corner States Linlin Lei, Shuyuan Xiao, Wenxing Liu, Qinghua Liao, Lingjuan He, and Tianbao Yu Phys. Rev. Applied 20, 024014 (2023) – Published 4 August 2023   Beam Shaping in Fourier-Transform Acoustic Systems Qinxin Zhou, Xuemei Ren, Jie Huang, Zheng Xu, and Xiaojun Liu Phys. Rev. Applied 20, 024015 (2023) – Published 7 August 2023   Giant Magnetic and Optical Anisotropy in Cerium-Substituted M-Type Strontium Hexaferrite Driven by 4f Electrons Churna Bhandari and Durga Paudyal Phys. Rev. Applied 20, 024016 (2023) – Published 7 August 2023   Weak-Link Physics in the Dynamical Response of Transition-Edge Sensors Marios Kounalakis, Luciano Gottardi, Martin de Wit, and Yaroslav M. Blanter Phys. Rev. Applied 20, 024017 (2023) – Published 7 August 2023   Collective-Motion-Enhanced Acceleration Sensing via an Optically Levitated Microsphere Array Yao Li, Chuang Li, Jiandong Zhang, Ying Dong, and Huizhu Hu Phys. Rev. Applied 20, 024018 (2023) – Published 7 August 2023   Timing Constraints Due to Real-Time Graph-Traversal Algorithms on Incomplete Cluster States in Photonic Measurement-Based Quantum Computing John R. Scott and Krishna C. Balram Phys. Rev. Applied 20, 024019 (2023) – Published 8 August 2023   Vibrational-Anharmonicity-Assisted Phase Transitions in Perovskite Oxides Under Terahertz Irradiation Cong Zhou and Jian Zhou Phys. Rev. Applied 20, 024020 (2023) – Published 8 August 2023   Local Alloy Order in a Ge1−xSnx/Ge Epitaxial Layer Agnieszka Anna Corley-Wiciak, Shunda Chen, Omar Concepción, Marvin Hartwig Zoellner, Detlev Grützmacher, Dan Buca, Tianshu Li, Giovanni Capellini, and Davide Spirito Phys. Rev. Applied 20, 024021 (2023) – Published 8 August 2023   Kinetic Inductive Electromechanical Transduction for Nanoscale Force Sensing August K. Roos, Ermes Scarano, Elisabet K. Arvidsson, Erik Holmgren, and David B. Haviland Phys. Rev. Applied 20, 024022 (2023) – Published 8 August 2023   Schemes for Tracking Resonance Frequency for Micro- and Nanomechanical Resonators Hajrudin Bešić, Alper Demir, Johannes Steurer, Niklas Luhmann, and Silvan Schmid Phys. Rev. Applied 20, 024023 (2023) – Published 9 August 2023   Unified Simulation Methods for Quantum Acoustic Devices Hugo Banderier, Maxwell Drimmer, and Yiwen Chu Phys. Rev. Applied 20, 024024 (2023) – Published 9 August 2023   Montage Operation of Plaquette States in Acoustic Orbital Lattices with Type-III Dirac Points Qi-Li Sun, Yu-Gui Peng, Feng Gao, Bin Li, and Xue-Feng Zhu Phys. Rev. Applied 20, 024025 (2023) – Published 9 August 2023   Plug-and-Play Measurement of Chromatic Dispersion by Means of Two-Photon Interferometry Romain Dalidet, Anthony Martin, Mattis Riesner, Sidi-Ely Ahmedou, Romain Dauliat, Baptiste Leconte, Guillaume Walter, Grégory Sauder, Jean-Christophe Delagnes, Guy Millot, Philippe Roy, Raphaël Jamier, Sébastien Tanzilli, and Laurent Labonté Phys. Rev. Applied 20, 024026 (2023) – Published 10 August 2023   High-Efficiency Photoelectric Detector Based on a p-n Homojunction of Monolayer Black Phosphorus Xueying Zuo, Jingjing Cheng, Yulin Liang, Fuming Xu, and Yanxia Xing Phys. Rev. Applied 20, 024027 (2023) – Published 10 August 2023   Analogue of Charge Conjugation in the Optical Spin Hall Effect Yuquan Zhou, Haochen Wang, Song Luo, Hang Zhou, Junhui Cao, T.-S. Zeng, Yunmei Li, Alexey Kavokin, Long Zhang, and Zhanghai Chen Phys. Rev. Applied 20, 024028 (2023) – Published 10 August 2023   Practical Decoy-State Memory-Assisted Measurement-Device-Independent Quantum Key Distribution Mingshuo Sun, Chun-Hui Zhang, Hua-Jian Ding, Xing-Yu Zhou, Jian Li, and Qin Wang Phys. Rev. Applied 20, 024029 (2023) – Published 11 August 2023   Microwave Quantum Illumination with Correlation-To-Displacement Conversion Jacopo Angeletti, Haowei Shi, Theerthagiri Lakshmanan, David Vitali, and Quntao Zhuang Phys. Rev. Applied 20, 024030 (2023) – Published 11 August 2023   Quasiparticle Spectroscopy, Transport, and Magnetic Properties of Nb Films Used in Superconducting Qubits Kamal R. Joshi, Sunil Ghimire, Makariy A. Tanatar, Amlan Datta, Jin-Su Oh, Lin Zhou, Cameron J. Kopas, Jayss Marshall, Josh Y. Mutus, Julie Slaughter, Matthew J. Kramer, James A. Sauls, and Ruslan Prozorov Phys. Rev. Applied 20, 024031 (2023) – Published 11 August 2023   Field-Free Switching in Symmetry-Breaking Multilayers: The Critical Role of Interlayer Chiral Exchange Yung-Cheng Li, Yu-Hao Huang, Chao-Chung Huang, Yan-Ting Liu, and Chi-Feng Pai Phys. Rev. Applied 20, 024032 (2023) – Published 14 August 2023   Thermal Emission with High Temporal and Spatial Coherence by Harnessing Quasiguided Modes Kaili Sun, Uriel Levy, and Zhanghua Han Phys. Rev. Applied 20, 024033 (2023) – Published 14 August 2023   Experimental Benchmarking of an Automated Deterministic Error-Suppression Workflow for Quantum Algorithms Pranav S. Mundada, Aaron Barbosa, Smarak Maity, Yulun Wang, Thomas Merkh, T.M. Stace, Felicity Nielson, Andre R.R. Carvalho, Michael Hush, Michael J. Biercuk, and Yuval Baum Phys. Rev. Applied 20, 024034 (2023) – Published 14 August 2023   Photoacoustic Multispectral Elastography Based on the Photoacoustic Oscillation Effect for Microelastomers in Deep Tissue Yang Liu, Chao Tao, and Xiaojun Liu Phys. Rev. Applied 20, 024035 (2023) – Published 14 August 2023   Calibration of Drive Nonlinearity for Arbitrary-Angle Single-Qubit Gates Using Error Amplification Stefania Lazăr, Quentin Ficheux, Johannes Herrmann, Ants Remm, Nathan Lacroix, Christoph Hellings, Francois Swiadek, Dante Colao Zanuz, Graham J. Norris, Mohsen Bahrami Panah, Alexander Flasby, Michael Kerschbaum, Jean-Claude Besse, Christopher Eichler, and Andreas Wallraff Phys. Rev. Applied 20, 024036 (2023) – Published 15 August 2023   Editors' Suggestion Carrier Mobility up to 106 cm2 V−1 s−1 Measured in Single-Crystal Diamond by the Time-of-Flight Electron-Beam-Induced-Current Technique A. Portier, F. Donatini, D. Dauvergne, M.-L. Gallin-Martel, and J. Pernot Phys. Rev. Applied 20, 024037 (2023) – Published 16 August 2023 Diamond is hard: Carrier mobility in diamond is a key parameter for the development of future electronics and quantum devices, yet the low-field mobility of holes in ultrapure diamond is unknown, below 80 K or so. This study presents a time-of-flight technique using electron-beam-induced current to measure the velocities of electrons and holes as a function of temperature and electric field. A low-field mobility of (1.03±0.05)×106 cm2 V−1 s−1 is measured for holes at 13 K, demonstrating that diamond is a suitable material for ballistic transport of charge carriers at a length scale of greater than 10 μm.     Cyclic Quantum Engines Enhanced by Strong Bath Coupling Camille L. Latune, Graeme Pleasance, and Francesco Petruccione Phys. Rev. Applied 20, 024038 (2023) – Published 16 August 2023   Editors' Suggestion Ultrastrong Magnon-Photon Coupling Achieved by Magnetic Films in Contact with Superconducting Resonators Alberto Ghirri, Claudio Bonizzoni, Maksut Maksutoglu, Alberto Mercurio, Omar Di Stefano, Salvatore Savasta, and Marco Affronte Phys. Rev. Applied 20, 024039 (2023) – Published 16 August 2023 Controlling magnon-photon coupling is one of the keys to enabling cavity magnonics in several emerging applications, where the realization of all-on-chip devices is crucial to integrating magnonic systems with microwave circuits. This study shows that ultrastrong coupling can be achieved with a ferrimagnetic film in direct contact with a superconducting resonator. Analysis shows that the diamagnetic coupling term is vanishingly small, suggesting a potential route to superradiant phase transitions. These results ought to be relevant for microwave technologies including memory devices, microwave-to-optical transducers, haloscopes for axion detection, and coherent microwave sources.     Topological Heterostructures for Spectrally Nearly Constant Intensity Enhancements of Audio Sound and Ultrasonics Cui-xin Zhang, An Chen, Wei Hu, Jing Yang, Bin Liang, Johan Christensen, and Jian-chun Cheng Phys. Rev. Applied 20, 024040 (2023) – Published 16 August 2023   Composite Picosecond Control of Atomic States through a Nanofiber Interface Yudi Ma, Ruijuan Liu, Lingjing Ji, Liyang Qiu, Dianqiang Su, Yanting Zhao, Ni Yao, Wei Fang, and Saijun Wu Phys. Rev. Applied 20, 024041 (2023) – Published 17 August 2023   Quantum Sensing of Magnetic Fields Using Global Optimization Algorithms Wei Xiao, Yudong Ding, Teng Wu, Xiang Peng, and Hong Guo Phys. Rev. Applied 20, 024042 (2023) – Published 17 August 2023   Suppression of Midinfrared Plasma Resonance Due to Quantum Confinement in δ-Doped Silicon Steve M. Young, Aaron M. Katzenmeyer, Evan M. Anderson, Ting S. Luk, Jeffrey A. Ivie, Scott W. Schmucker, Xujiao Gao, and Shashank Misra Phys. Rev. Applied 20, 024043 (2023) – Published 17 August 2023   Editors' Suggestion Quantum Annealing Optimization Method for the Design of Barrier Materials in Magnetic Tunnel Junctions Kenji Nawa, Tsuyoshi Suzuki, Keisuke Masuda, Shu Tanaka, and Yoshio Miura Phys. Rev. Applied 20, 024044 (2023) – Published 17 August 2023 Materials informatics has boosted materials design, but the search for optimal atomic configurations in spintronic devices is challenging, due to many degrees of freedom and the need to design at the atomic level. Quantum annealing offers a breakthrough for such challenges in huge search spaces. The authors propose a combination of quantum annealing, machine learning, and first-principles calculations that is computationally cheaper than ordinary machine learning in designing atomically disordered spinel oxides (promising materials for magnetoresistive devices). Furthermore, the origins of physical properties of interest can be interpreted from the obtained Ising model Hamiltonian.     Editors' Suggestion Characterization of Microwave Loss Using Multimode Superconducting Resonators Chan U Lei, Suhas Ganjam, Lev Krayzman, Archan Banerjee, Kim Kisslinger, Sooyeon Hwang, Luigi Frunzio, and Robert J. Schoelkopf Phys. Rev. Applied 20, 024045 (2023) – Published 18 August 2023 Understanding the loss mechanisms in materials is crucial to improving coherence in superconducting quantum circuits. The authors present a technique based on multimode superconducting resonators that distinguishes and quantifies all loss channels in relevant materials. Applying this technique reveals that both chemical etching and diamond turning reduce surface losses in high-purity aluminum, while coating diamond-turned surfaces with thin-film aluminum significantly improves joint quality. This method can be used to design on-chip superconducting devices to characterize microwave losses, as well as to quantify the effects of fabrication processes.     Phase-Matching Quantum Key Distribution Without Intensity Modulation Shan-Feng Shao, Xiao-Yu Cao, Yuan-Mei Xie, Jie Gu, Wen-Bo Liu, Yao Fu, Hua-Lei Yin, and Zeng-Bing Chen Phys. Rev. Applied 20, 024046 (2023) – Published 18 August 2023   Regulation of Luminescence Properties of the Ultrathin Two-Dimensional Halide Perovskite Cs2PbIxCl4−x (x = 0,1,2,3,4) with Ruddlesden-Popper Structure Jun Luo, Biao Liu, Jun-Liang Yang, and Meng-Qiu Cai Phys. Rev. Applied 20, 024047 (2023) – Published 18 August 2023   Featured in Physics Editors' Suggestion Satellite-Relayed Global Quantum Communication without Quantum Memory Sumit Goswami and Sayandip Dhara Phys. Rev. Applied 20, 024048 (2023) – Published 18 August 2023 Synopsis:Global Quantum Communication via a Satellite Train Long-distance quantum communication can usher in hack-proof communication, enable precision quantum sensing technologies, and ultimately yield a quantum Internet. Existing protocols for global-scale quantum communication demand high-performance quantum memories, which have limited communication distance. This study proposes a chain of satellites in low Earth orbit to directly transmit photonic qubits through space, using the satellites like optical lenses to counter diffraction loss. Simulations and analysis of different quantum communication protocols using this relay system show the feasibility of building a global quantum network of only satellites, without requiring quantum memories.     Editors' Suggestion Quantum Microwave Parametric Interferometer F. Kronowetter, F. Fesquet, M. Renger, K. Honasoge, Y. Nojiri, K. Inomata, Y. Nakamura, A. Marx, R. Gross, and K.G. Fedorov Phys. Rev. Applied 20, 024049 (2023) – Published 21 August 2023 Interferometers are extremely powerful tools for precision measurements in a plethora of research fields and applications, such as the detection of gravitational waves. The authors present experimental realization of a nonlinear microwave interferometer based on superconducting quantum circuits. Useful properties of this device range from a signal-to-noise ratio that exceeds the shot-noise limit, to sub-Poissonian intensity fluctuations between its outputs. These intriguing findings will promote applications ranging from quantum illumination to the search for axionic dark matter.     Compact Multiway Plasmonic-Power-Splitters with Arbitrary Phase Responses Zi Hua You, Hui Feng Ma, Ji Ran Chen, Yue Teng Chen, and Tie Jun Cui Phys. Rev. Applied 20, 024050 (2023) – Published 21 August 2023   Demonstration of Quantum Energy Teleportation on Superconducting Quantum Hardware Kazuki Ikeda (池田一毅) Phys. Rev. Applied 20, 024051 (2023) – Published 21 August 2023   Editors' Suggestion Sensing Rotations with Multiplane Light Conversion M. Eriksson, A.Z. Goldberg, M. Hiekkamäki, F. Bouchard, J. Rehacek, Z. Hradil, G. Leuchs, R. Fickler, and L.L. Sánchez-Soto Phys. Rev. Applied 20, 024052 (2023) – Published 21 August 2023 Because any unitary operation is a rotation, in a sense measuring rotation is the most universal sort of measurement. In practice, precise rotation measurements are essential, from magnetometry to inertial navigation to fundamental tests of physics. The ultimate limits for simultaneously measuring all of the components of a rotation are dictated by quantum theory, and here are tested using light's orbital angular momentum and multiplane light conversion. Rotated states are projected onto a set of coherent states to deduce the rotation parameters, using a method inspired by GPS. The results are near the ultimate limits of quantum precision.     Beating Ringdowns of Near-Degenerate Mechanical Resonances Matthijs H.J. de Jong, Andrea Cupertino, Dongil Shin, Simon Gröblacher, Farbod Alijani, Peter G. Steeneken, and Richard A. Norte Phys. Rev. Applied 20, 024053 (2023) – Published 22 August 2023   Hamiltonian Inference from Dynamical Excitations in Confined Quantum Magnets Netta Karjalainen, Zina Lippo, Guangze Chen, Rouven Koch, Adolfo O. Fumega, and Jose L. Lado Phys. Rev. Applied 20, 024054 (2023) – Published 22 August 2023   Electrically Induced Nonthermal Memristive Switching in V2O3/Si Thin Film Sophia Sahoo, Anupam Jana, Satish Yadav, Rajeev Rawat, D.M. Phase, and R.J. Choudhary Phys. Rev. Applied 20, 024055 (2023) – Published 22 August 2023   Lattice Deformation at Submicron Scale: X-Ray Nanobeam Measurements of Elastic Strain in Electron Shuttling Devices C. Corley-Wiciak, M.H. Zoellner, I. Zaitsev, K. Anand, E. Zatterin, Y. Yamamoto, A.A. Corley-Wiciak, F. Reichmann, W. Langheinrich, L.R. Schreiber, C.L. Manganelli, M. Virgilio, C. Richter, and G. Capellini Phys. Rev. Applied 20, 024056 (2023) – Published 23 August 2023   Overbias and Quantum Tunneling in Light-Emitting Memristors S. Hamdad, K. Malchow, D. Avetisyan, E. Dujardin, A. Bouhelier, Y. Zhou, B. Cheng, T. Zellweger, and J. Leuthold Phys. Rev. Applied 20, 024057 (2023) – Published 23 August 2023   Qubit-Photon Bound States: Crossover from Waveguide to Cavity Regime N. Pradeep Kumar, Andrés Rosario Hamann, Rohit Navarathna, Maximilian Zanner, Mikhail Pletyukhov, and Arkady Fedorov Phys. Rev. Applied 20, 024058 (2023) – Published 23 August 2023   Interpretation of Spin-Wave Modes in Co/Ag Nanodot Arrays Probed by Broadband Ferromagnetic Resonance Daniel Markó, Rajgowrav Cheenikundil, Julien Bauer, Kilian Lenz, Wan-Chen Chuang, Ko-Wei Lin, Jong-Ching Wu, Massimiliano d'Aquino, Riccardo Hertel, and David S. Schmool Phys. Rev. Applied 20, 024059 (2023) – Published 23 August 2023   Spontaneous Synchronization and Exceptional Points in Breather Complexes Wenchao Wang, Zhifan Fang, Tianhao Xian, Mengjie Zhang, Yang Zhao, and Li Zhan Phys. Rev. Applied 20, 024060 (2023) – Published 24 August 2023   Radiative Thermal Transistor Yuxuan Li, Yongdi Dang, Sen Zhang, Xinran Li, Yi Jin, Philippe Ben-Abdallah, Jianbin Xu, and Yungui Ma Phys. Rev. Applied 20, 024061 (2023) – Published 24 August 2023   Roles of Topological Surface States and Spin-Orbit Coupling in Catalytic Activity on Topological Insulators Xiangting Hu, Changming Zhao, Xiang Huang, Chao He, and Hu Xu Phys. Rev. Applied 20, 024062 (2023) – Published 24 August 2023   Polarity Manipulation of Anomalous Hall Effect and Enhanced Spin-Orbit Torques in Perpendicular Synthetic Antiferromagnets Jingying Zhang, Hongwei Xue, Ziyang Li, Yiwen Song, Jiali Zhang, Zhiyao Jiang, Qingyuan Jin, and Zongzhi Zhang Phys. Rev. Applied 20, 024063 (2023) – Published 24 August 2023   Editors' Suggestion Quantum Time Transfer: A Practical Method for Lossy and Noisy Channels Randy Lafler and R. Nicholas Lanning Phys. Rev. Applied 20, 024064 (2023) – Published 25 August 2023 Precise clock synchronization is important for quantum networking, enhanced position, navigation, timing, and other applications that require clock synchronization better than GPS, but remains an ongoing challenge. The authors propose a solution using hardware native to quantum networking. This quantum-time-transfer technique can quickly achieve picosecond-level clock synchronization despite relatively low-performance quantum-photon sources and detection equipment. Furthermore, it is robust against the high loss and high noise channel conditions representative of daytime space-Earth links, and could provide high-precision secure timing in GPS-denied environments.     Topological-Insulator Spin Transistor Linh T. Dang, Oliver Breunig, Zhiwei Wang, Henry F. Legg, and Yoichi Ando Phys. Rev. Applied 20, 024065 (2023) – Published 25 August 2023   Acoustophoretic Characterization and Separation of Blood Cells in Acoustic Impedance Gradients Mahdi Rezayati Charan and Per Augustsson Phys. Rev. Applied 20, 024066 (2023) – Published 25 August 2023   Acoustically Activated Nozzle for Microdroplet Generation and Dispensing Qiu Yin, Xiuyuan Li, Zhichao Ma, and Wenming Zhang Phys. Rev. Applied 20, 024067 (2023) – Published 25 August 2023   Rydberg-Atom Sensors in Bichromatic Radio-Frequency Fields Mohammad Noaman, Donald W. Booth, and James P. Shaffer Phys. Rev. Applied 20, 024068 (2023) – Published 28 August 2023   Optimizing Reservoir Computing Based on an Alternating Input-Driven Spin-Torque Oscillator Xuezhao Wu, Zihan Tong, and Qiming Shao Phys. Rev. Applied 20, 024069 (2023) – Published 28 August 2023   Learning-Based Calibration of Flux Crosstalk in Transmon Qubit Arrays Cora N. Barrett, Amir H. Karamlou, Sarah E. Muschinske, Ilan T. Rosen, Jochen Braumüller, Rabindra Das, David K. Kim, Bethany M. Niedzielski, Meghan Schuldt, Kyle Serniak, Mollie E. Schwartz, Jonilyn L. Yoder, Terry P. Orlando, Simon Gustavsson, Jeffrey A. Grover, and William D. Oliver Phys. Rev. Applied 20, 024070 (2023) – Published 28 August 2023   Near-Term Efficient Quantum Algorithms for Entanglement Analysis Ranyiliu Chen, Benchi Zhao, and Xin Wang Phys. Rev. Applied 20, 024071 (2023) – Published 29 August 2023   Editors' Suggestion Quantum-Enhanced Pattern Recognition Giuseppe Ortolano, Carmine Napoli, Cillian Harney, Stefano Pirandola, Giuseppe Leonetti, Pauline Boucher, Elena Losero, Marco Genovese, and Ivano Ruo-Berchera Phys. Rev. Applied 20, 024072 (2023) – Published 29 August 2023 This work demonstrates experimentally that the advantage gained in sensing using quantum photonic resources can be sustained, and even amplified, through complex classical post-processing aimed at extracting relevant features. Despite the very different architectures of the classical algorithms tested here, the quantum advantage in classification performance appears to be robust and qualitatively very consistent. Thus the results argue for widespread use of quantum sensing technologies, in any field that deals with pattern recognition in large datasets.     Editors' Suggestion Quantum Hacking Against Discrete-Modulated Continuous-Variable Quantum Key Distribution Using Modified Local Oscillator Intensity Attack with Random Fluctuations Lu Fan, Yiming Bian, Mingze Wu, Yichen Zhang, and Song Yu Phys. Rev. Applied 20, 024073 (2023) – Published 29 August 2023 Know your enemy: In practical inline systems for continuous-variable quantum key distribution, the local oscillator (LO) is particularly vulnerable to being controlled by hackers. The authors propose a modified LO intensity attack with random fluctuations, which has the advantage of evading the commonly used monitoring technologies. Moreover, similar quantum hacking could also target the pilot intensity in a LO system, which indicates the strong adaptability and practicability of the proposed attack. This work could be of great significance to the practical security of continuous-variable quantum key distribution.     Control of Magnon-Polariton Hybridization with a Microwave Pump Chao Zhang, Jinwei Rao, C.Y. Wang, Z.J. Chen, K.X. Zhao, Bimu Yao, Xu-Guang Xu, and Wei Lu Phys. Rev. Applied 20, 024074 (2023) – Published 30 August 2023   Tuning Layer-, Perfect-Spin-, and Valley-Polarized Transport in Transition-Metal-Dichalcogenide Bilayer Junctions Yaser Hajati, Mohammad Alipourzadeh, Dominik Schulz, and Jamal Berakdar Phys. Rev. Applied 20, 024075 (2023) – Published 30 August 2023   Application of Topological Edge States in Magnetic Resonance Imaging Viktor M. Puchnin, Olga V. Matvievskaya, Alexey P. Slobozhanyuk, Alena V. Shchelokova, and Nikita A. Olekhno Phys. Rev. Applied 20, 024076 (2023) – Published 30 August 2023   Superresolution Enhancement in Biphoton Spatial-Mode Demultiplexing Florence Grenapin, Dilip Paneru, Alessio D'Errico, Vincenzo Grillo, Gerd Leuchs, and Ebrahim Karimi Phys. Rev. Applied 20, 024077 (2023) – Published 31 August 2023   Editors' Suggestion 2×10−13 Fractional Laser-Frequency Stability with a 7-cm Unequal-Arm Mach-Zehnder Interferometer Victor Huarcaya, Miguel Dovale Álvarez, Daniel Penkert, Stefano Gozzo, Pablo Martínez Cano, Kohei Yamamoto, Juan José Esteban Delgado, Moritz Mehmet, Karsten Danzmann, and Gerhard Heinzel Phys. Rev. Applied 20, 024078 (2023) – Published 31 August 2023 To reach subpicometer sensitivities in the millihertz frequency range, inertial sensors based on laser interferometry must reduce laser-frequency noise, typically by using ultrastable optical reference cavities or atomic or molecular references. This study presents a simpler solution: a quasimonolithic Mach-Zehnder interferometer with intentionally mismatched arm lengths, plus two photodiodes at balanced output ports. Here structural stability is transferred to laser frequency via amplification, integration, and feedback of the balanced-detection signal. Improvements to the thermal design and isolation of a compact setup allow stabilities similar to those of reference systems.     High-Modulus Modifications: Stress-Resilient Electrode Materials for Stable Lithium-Ion Batteries Xiaodi Jiang, Mingze Ji, Guohua Gao, Xu Yan, Zheng Xu, Wenchao Bi, Qian Cheng, and Guangming Wu Phys. Rev. Applied 20, 024079 (2023) – Published 31 August 2023   Editors' Suggestion Piezostrain as a Local Handle to Control Gyrotropic Dynamics of Magnetic Vortices Vadym Iurchuk, Serhii Sorokin, Jürgen Lindner, Jürgen Fassbender, and Attila Kákay Phys. Rev. Applied 20, 024080 (2023) – Published 31 August 2023 Power-saving solutions are sought for manipulating the dynamics of magnetic microelements in emerging spintronic rf devices. The authors show that local piezostrain is an efficient extrinsic means to control the gyrotropic motion of magnetic vortices, with low voltages and all-electrical operation. In addition, they find that the frequency-strain tuning ratio scales inversely with the size of the vortex-based microdevice. Their approach offers an extra dimension in the frequency tuning of vortex-based spintronic oscillators.       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.