Volume 20, Issue 3 September 2023 | | Advertisement PRB seeks an Associate Editor to manage the peer review process of assigned manuscripts by determining whether to send a manuscript out for external review, choosing appropriate reviewers, and making decisions on rejection or acceptance. More information. | | | | | Advertisement | Do you need language assistance for your next submission? Take advantage of new translation, figure assistance, and text editing services provided by APS and Editage. Experience exceptional support, expertise, and dedication for all your publishing needs. Get a quote. | | | | | | Advertisement The abstract submission deadline is quickly approaching! Don't miss this opportunity to 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. Submit your abstract by October 20. | | | | | Not an APS member? Join today to start connecting with a community of more than 50,000 physicists. | | | | EDITORIALS AND ANNOUNCEMENTS | Randall D. Kamien Phys. Rev. Applied 20, 030001 (2023) – Published 25 September 2023 | | | Editors' Suggestion Abhinav S. Sharma, Muhammad Hanif, Stephen P. Bremner, Michael P. Nielsen, Murad J. Y. Tayebjee, Fiacre E. Rougieux, Nicholas J. Ekins-Daukes, and Andreas Pusch Phys. Rev. Applied 20, 034001 (2023) – Published 1 September 2023 | Hot-carrier solar cells (HCSCs) are one option for achieving solar-energy conversion more efficiently than conventional single-junction cells. Due to challenging material requirements, the development of HCSCs has been limited to proof-of-concept devices. By examining heat flow in HCSCs, this study suggests expanding their characterization to include the study of carrier temperatures for various contact configurations and biases. The authors show that hotter is not always better: High carrier temperatures may be a sign of excessively high barriers to extraction—an insight that could adjust expectations and interpretations of hot-carrier temperatures in devices. | | | | | | Editors' Suggestion Matteo Aluffi, Thomas Vasselon, Seddik Ouacel, Hermann Edlbauer, Clément Geffroy, Preden Roulleau, D. Christian Glattli, Giorgos Georgiou, and Christopher Bäuerle Phys. Rev. Applied 20, 034005 (2023) – Published 5 September 2023 | Single-electron sources are vital for modern nanoelectronics, enabling advances in the emerging field of electron quantum optics. However, their performance is limited by the current method for generating single electrons by applying Lorentzian voltage pulses on the Fermi sea of a quantum conductor. The authors introduce a Fourier synthesis-based voltage pulse generator, allowing the generation and in-situ characterization of a 27-ps electron wave packet in an electronic Mach-Zehnder interferometer. This advancement can potentially enable the study of ultrafast dynamics in quantum nanoelectronic systems and the generation of high-frequency flying-electron qubits. | | | | | | Editors' Suggestion Adam Whitney, Chuanpu Liu, Tiffany S. Santos, Rajesh V. Chopdekar, Matthew Carey, Galen Street, Vijaysankar Kalappattil, Keira Leistikow, and Mingzhong Wu Phys. Rev. Applied 20, 034006 (2023) – Published 6 September 2023 | The efficiency of spin-transfer-torque magnetic random-access memory (MRAM) critically depends on the damping of the free layer. As MRAM cells operate above room temperature, it is crucial to determine the damping parameter of the free layer at elevated temperatures. This study uses ferromagnetic resonance techniques to measure the damping of MRAM free layers up to 520 K. The data show significant differences in temperature dependence between conventional and low-damping free-layer designs, paving the way for MRAM cells with lower switching current. These insights could impact the development of more efficient and thermally stable MRAM technologies. | | | | | | Editors' Suggestion T. Vasselon, A. Hernández-Mínguez, M. Hollenbach, G.V. Astakhov, and P.V. Santos Phys. Rev. Applied 20, 034017 (2023) – Published 11 September 2023 | Silicon vacancies in 4H-SiC are color centers with promising applications in quantum technologies, but spin control of the centers generated in a hexagonal local crystallographic environment has yet to be demonstrated above cryogenic temperatures. The authors use the dynamic strain of surface acoustic waves to overcome this limitation and efficiently excite spin transitions in the excited states of these color centers up to room temperature. The acoustic spin control of silicon vacancies opens possibilities for the implementation of efficient quantum spin control and sensing protocols using spin optomechanics. | | | | | | Editors' Suggestion Vishal Varma and T.S. Mahesh Phys. Rev. Applied 20, 034030 (2023) – Published 14 September 2023 | Long-lived states (LLSs) in nuclear magnetic resonance have diverse applications, from medical imaging to chemical analysis to quantum information processing, but were hitherto observed primarily in isotropic phases. The authors prepare LLS in an anisotropic environment of a liquid crystal and observe its survival across the phase transition to the isotropic phase. This study could pave the way for trapping LLS in the symmetric spin pair of an isotropic phase after breaking symmetry in an anisotropic phase, and motivate the realization of LLS in the solid phase, which will have implications for solid-state qubits toward achieving longer lifetimes in addition to long-range interactions. | | | | | | Editors' Suggestion M. R. Hogg, M.G. House, P. Pakkiam, and M.Y. Simmons Phys. Rev. Applied 20, 034066 (2023) – Published 27 September 2023 | Quantum computing devices have the potential to solve problems that are beyond even the most powerful modern supercomputers. Most quantum hardware operates at temperatures near absolute zero, but controlling a quantum computer at cryogenic temperatures using signals propagating from room temperature becomes infeasible for large-scale processors. The authors explore a device that allows control signals to be generated on-chip at cryogenic temperatures, potentially mitigating this cryogenic bottleneck. Their device is fabricated in silicon using established technologies for quantum processors, providing a pathway towards a hybrid quantum-classical integrated circuit. | | | | | | Editors' Suggestion Joshua Ziegler, Florian Luthi, Mick Ramsey, Felix Borjans, Guoji Zheng, and Justyna P. Zwolak Phys. Rev. Applied 20, 034067 (2023) – Published 28 September 2023 | Many methods to automatically tune silicon spin qubits are limited by reliability and data efficiency, which makes them less likely to be scalable. The authors demonstrate a reliable, efficient, physics-informed tuning algorithm (PIT) for navigating to a target charge configuration⏤a prerequisite to forming qubits. This tuning method combines machine learning and physical intuition with an algorithm that leverages one-dimensional scans (rays) and conventional peak-finding to navigate from a coarse, unknown device state to a desired charge occupation efficiently and effectively. PIT enables the transformation of an uncalibrated circuit to a functioning quantum processor. | | | | | | Letter Yuichi Yamazaki, Yuta Masuyama, Kazutoshi Kojima, and Takeshi Ohshima Phys. Rev. Applied 20, L031001 (2023) – Published 5 September 2023 | Quantum sensors based on silicon vacancies (VSi) in SiC are crucial for precise device design and simulations, but their practical application is hampered by the low sensitivity of temperature. This study introduces a temperature measurement protocol that increases signal intensity by an order of magnitude. By diverting part of the ground state optically detected magnetic resonance signal for temperature measurement, and leveraging simultaneous resonance of the ground state and excited state, the protocol significantly boosts performance. This leap in measurement sensitivity could make VSi-based quantum sensors far more effective and versatile. | | | | | | Editors' Suggestion Abhinav S. Sharma, Muhammad Hanif, Stephen P. Bremner, Michael P. Nielsen, Murad J. Y. Tayebjee, Fiacre E. Rougieux, Nicholas J. Ekins-Daukes, and Andreas Pusch Phys. Rev. Applied 20, 034001 (2023) – Published 1 September 2023 | Hot-carrier solar cells (HCSCs) are one option for achieving solar-energy conversion more efficiently than conventional single-junction cells. Due to challenging material requirements, the development of HCSCs has been limited to proof-of-concept devices. By examining heat flow in HCSCs, this study suggests expanding their characterization to include the study of carrier temperatures for various contact configurations and biases. The authors show that hotter is not always better: High carrier temperatures may be a sign of excessively high barriers to extraction—an insight that could adjust expectations and interpretations of hot-carrier temperatures in devices. | | | | | | Hong Li, Yuhang Liu, Fengbin Liu, and Jing Lu Phys. Rev. Applied 20, 034002 (2023) – Published 1 September 2023 | | | Andrea Meo, Francesca Garescì, Victor Lopez-Dominguez, Davi Rodrigues, Eleonora Raimondo, Vito Puliafito, Pedram Khalili Amiri, Mario Carpentieri, and Giovanni Finocchio Phys. Rev. Applied 20, 034003 (2023) – Published 5 September 2023 | | | S. Posen, M. Checchin, O.S. Melnychuk, T. Ring, I. Gonin, and T. Khabiboulline Phys. Rev. Applied 20, 034004 (2023) – Published 5 September 2023 | | | Editors' Suggestion Matteo Aluffi, Thomas Vasselon, Seddik Ouacel, Hermann Edlbauer, Clément Geffroy, Preden Roulleau, D. Christian Glattli, Giorgos Georgiou, and Christopher Bäuerle Phys. Rev. Applied 20, 034005 (2023) – Published 5 September 2023 | Single-electron sources are vital for modern nanoelectronics, enabling advances in the emerging field of electron quantum optics. However, their performance is limited by the current method for generating single electrons by applying Lorentzian voltage pulses on the Fermi sea of a quantum conductor. The authors introduce a Fourier synthesis-based voltage pulse generator, allowing the generation and in-situ characterization of a 27-ps electron wave packet in an electronic Mach-Zehnder interferometer. This advancement can potentially enable the study of ultrafast dynamics in quantum nanoelectronic systems and the generation of high-frequency flying-electron qubits. | | | | | | Editors' Suggestion Adam Whitney, Chuanpu Liu, Tiffany S. Santos, Rajesh V. Chopdekar, Matthew Carey, Galen Street, Vijaysankar Kalappattil, Keira Leistikow, and Mingzhong Wu Phys. Rev. Applied 20, 034006 (2023) – Published 6 September 2023 | The efficiency of spin-transfer-torque magnetic random-access memory (MRAM) critically depends on the damping of the free layer. As MRAM cells operate above room temperature, it is crucial to determine the damping parameter of the free layer at elevated temperatures. This study uses ferromagnetic resonance techniques to measure the damping of MRAM free layers up to 520 K. The data show significant differences in temperature dependence between conventional and low-damping free-layer designs, paving the way for MRAM cells with lower switching current. These insights could impact the development of more efficient and thermally stable MRAM technologies. | | | | | | J.P. van Soest, C.A. Potts, S. Peiter, A. Sanz Mora, and G.A. Steele Phys. Rev. Applied 20, 034007 (2023) – Published 6 September 2023 | | | Xin-Rui Li, Jia-Jia Feng, Bu-Chen Ping, Yang Sun, Da-Jian Wu, and Badreddine Assouar Phys. Rev. Applied 20, 034008 (2023) – Published 6 September 2023 | | | Haoyi Cheng, Jingwen Guo, Xin Zhang, and Wenjing Ye Phys. Rev. Applied 20, 034009 (2023) – Published 6 September 2023 | | | Yu Zhu, Boyuan Chi, Leina Jiang, Xiaoyan Guo, Yu Yan, and Xiufeng Han Phys. Rev. Applied 20, 034010 (2023) – Published 7 September 2023 | | | N. G. Chatzarakis, S. Germanis, I. Thyris, C. Katsidis, A. Stavrinidis, G. Konstantinidis, Z. Hatzopoulos, and N. T. Pelekanos Phys. Rev. Applied 20, 034011 (2023) – Published 7 September 2023 | | | Go Itami and Osamu Sakai Phys. Rev. Applied 20, 034012 (2023) – Published 7 September 2023 | | | Yishu Su, Ying Li, Minghong Qi, Sebastien Guenneau, Huagen Li, and Jian Xiong Phys. Rev. Applied 20, 034013 (2023) – Published 7 September 2023 | | | Joon Sang Kang, Dung Vu, Minyue Zhu, and Joseph P. Heremans Phys. Rev. Applied 20, 034014 (2023) – Published 8 September 2023 | | | K.M. Sabakar, M.I. Vaskovskaya, D.S. Chuchelov, E.A. Tsygankov, V.V. Vassiliev, S.A. Zibrov, and V.L. Velichansky Phys. Rev. Applied 20, 034015 (2023) – Published 8 September 2023 | | | Hantao Sun, Feng Wu, Hsiang-Sheng Ku, Xizheng Ma, Jin Qin, Zhijun Song, Tenghui Wang, Gengyan Zhang, Jingwei Zhou, Yaoyun Shi, Hui-Hai Zhao, and Chunqing Deng Phys. Rev. Applied 20, 034016 (2023) – Published 8 September 2023 | | | Editors' Suggestion T. Vasselon, A. Hernández-Mínguez, M. Hollenbach, G.V. Astakhov, and P.V. Santos Phys. Rev. Applied 20, 034017 (2023) – Published 11 September 2023 | Silicon vacancies in 4H-SiC are color centers with promising applications in quantum technologies, but spin control of the centers generated in a hexagonal local crystallographic environment has yet to be demonstrated above cryogenic temperatures. The authors use the dynamic strain of surface acoustic waves to overcome this limitation and efficiently excite spin transitions in the excited states of these color centers up to room temperature. The acoustic spin control of silicon vacancies opens possibilities for the implementation of efficient quantum spin control and sensing protocols using spin optomechanics. | | | | | | Erin S. Grant, Mina Barzegar Amiri Olia, Yang Li, Ella P. Walsh, Gawain McColl, Liam T. Hall, and David A. Simpson Phys. Rev. Applied 20, 034018 (2023) – Published 11 September 2023 | | | Valerio Crescimanna, Jacob Taylor, Aaron Z. Goldberg, and Khabat Heshami Phys. Rev. Applied 20, 034019 (2023) – Published 11 September 2023 | | | Hui Zhou, Ze-Ru Yang, Qiu-Yu Li, Chao Zeng, Si-Yu Liu, Zhong-Hua Shen, and Wei-Wei Kan Phys. Rev. Applied 20, 034020 (2023) – Published 11 September 2023 | | | Ryan. K. Daniels, Matthew D. Arnold, Zachary E. Heywood, Joshua B. Mallinson, Philip J. Bones, and Simon A. Brown Phys. Rev. Applied 20, 034021 (2023) – Published 12 September 2023 | | | Natalia Domenikou, Ioannis Thanopulos, Vasilios Karanikolas, and Emmanuel Paspalakis Phys. Rev. Applied 20, 034022 (2023) – Published 12 September 2023 | | | Yat-Yin Au and Kevin G. Fripp Phys. Rev. Applied 20, 034023 (2023) – Published 12 September 2023 | | | Aditi Sahoo, Tufan Paul, Pulak Pal, Nisha Hiralal Makani, Aswini Ghosh, and Rupak Banerjee Phys. Rev. Applied 20, 034024 (2023) – Published 12 September 2023 | | | Romane Le Dizès Castell, Rosa Sinaasappel, Clémence Fontaine, Scott H. Smith, Paul Kolpakov, Daniel Bonn, and Noushine Shahidzadeh Phys. Rev. Applied 20, 034025 (2023) – Published 13 September 2023 | | | Mohammad Rezaei-Pandari, Mohammad Mirzaie, Calin Ioan Hojbota, Tae Gyu Pak, Sang Beom Kim, Geon Woo Lee, Reza Massudi, Ali Reza Niknam, Seong Ku Lee, Ki-Yong Kim, and Chang Hee Nam Phys. Rev. Applied 20, 034026 (2023) – Published 13 September 2023 | | | Ants Remm, Sebastian Krinner, Nathan Lacroix, Christoph Hellings, François Swiadek, Graham J. Norris, Christopher Eichler, and Andreas Wallraff Phys. Rev. Applied 20, 034027 (2023) – Published 13 September 2023 | | | Cheng-Peng Liang, Yang Liu, Fei-Fei Li, Shu-Wai Leung, Yin Poo, and Jian-Hua Jiang Phys. Rev. Applied 20, 034028 (2023) – Published 13 September 2023 | | | Shaojie Hu, Shinya Yamada, Po-Chun Chang, Wen-Chin Lin, Kohei Hamaya, and Takashi Kimura Phys. Rev. Applied 20, 034029 (2023) – Published 14 September 2023 | | | Editors' Suggestion Vishal Varma and T.S. Mahesh Phys. Rev. Applied 20, 034030 (2023) – Published 14 September 2023 | Long-lived states (LLSs) in nuclear magnetic resonance have diverse applications, from medical imaging to chemical analysis to quantum information processing, but were hitherto observed primarily in isotropic phases. The authors prepare LLS in an anisotropic environment of a liquid crystal and observe its survival across the phase transition to the isotropic phase. This study could pave the way for trapping LLS in the symmetric spin pair of an isotropic phase after breaking symmetry in an anisotropic phase, and motivate the realization of LLS in the solid phase, which will have implications for solid-state qubits toward achieving longer lifetimes in addition to long-range interactions. | | | | | | Y. Suzuki, S. Kawabata, T. Yamamoto, and S. Masuda Phys. Rev. Applied 20, 034031 (2023) – Published 14 September 2023 | | | Likuan Ma, Quanyang Tao, Yang Chen, Songlong Liu, Zheyi Lu, Liting Liu, Zhiwei Li, Donglin Lu, Yiliu Wang, Lei Liao, and Yuan Liu Phys. Rev. Applied 20, 034032 (2023) – Published 14 September 2023 | | | Takayuki Kubo Phys. Rev. Applied 20, 034033 (2023) – Published 15 September 2023 | | | Antonio A. Valido and Alejandro J. Castro Phys. Rev. Applied 20, 034034 (2023) – Published 15 September 2023 | | | Guoli Lin, Yiqun Xie, Li Shu, and Xiang Ye Phys. Rev. Applied 20, 034035 (2023) – Published 15 September 2023 | | | Pedro Rosario, Alan C. Santos, C.J. Villas-Boas, and R. Bachelard Phys. Rev. Applied 20, 034036 (2023) – Published 15 September 2023 | | | A.L. Chekhov, Y. Behovits, U. Martens, B.R. Serrano, M. Wolf, T.S. Seifert, M. Münzenberg, and T. Kampfrath Phys. Rev. Applied 20, 034037 (2023) – Published 18 September 2023 | | | Xin He, Prasanna Pakkiam, Adil A. Gangat, Michael J. Kewming, Gerard J. Milburn, and Arkady Fedorov Phys. Rev. Applied 20, 034038 (2023) – Published 18 September 2023 | | | Xudan Chai, Teng Ma, Qihao Guo, Zhangqi Yin, Hao Wu, and Qing Zhao Phys. Rev. Applied 20, 034039 (2023) – Published 18 September 2023 | | | Artem Bercha, Grzegorz Muziol, Mikolaj Chlipala, and Witold Trzeciakowski Phys. Rev. Applied 20, 034040 (2023) – Published 19 September 2023 | | | K. Murali, Manaoj Aravind, and Sudeshna Sinha Phys. Rev. Applied 20, 034041 (2023) – Published 19 September 2023 | | | Chao Li, Xiao Chai, Linzhao Zhuo, Bochao Wei, Ardalan Lotfi, Farrokh Ayazi, and Chandra Raman Phys. Rev. Applied 20, 034042 (2023) – Published 19 September 2023 | | | Yue Wu, Jun-Hao Liu, Ya-Fei Yu, Zhi-Ming Zhang, and Jin-Dong Wang Phys. Rev. Applied 20, 034043 (2023) – Published 19 September 2023 | | | Francisco Escudero, David Fernández-Fernández, Gabriel Jaumà, Guillermo F. Peñas, and Luciano Pereira Phys. Rev. Applied 20, 034044 (2023) – Published 20 September 2023 | | | Andreas Thurn, Jochen Bissinger, Stefan Meinecke, Paul Schmiedeke, Sang Soon Oh, Weng W. Chow, Kathy Lüdge, Gregor Koblmüller, and Jonathan J. Finley Phys. Rev. Applied 20, 034045 (2023) – Published 20 September 2023 | | | Aldritt Scaria Madathiparambil, Kim Robert Tekseth, Fredrik K. Mürer, Benoît Cordonnier, Nicolaine Agofack, Jessica McBeck, Pierre Cerasi, François Renard, Basab Chattopadhyay, and Dag W. Breiby Phys. Rev. Applied 20, 034046 (2023) – Published 20 September 2023 | | | Joel N. Johnson, Danielle R. Haverkamp, Yi-Hsin Ou, Khanh Kieu, Nils T. Otterstrom, Peter T. Rakich, and Ryan O. Behunin Phys. Rev. Applied 20, 034047 (2023) – Published 20 September 2023 | | | Hiroki Fukuda, Akira Nagakubo, Oliver B. Wright, Kazuhiro Kyotani, and Hirotsugu Ogi Phys. Rev. Applied 20, 034048 (2023) – Published 21 September 2023 | | | Haibo Wang, Gong Zhang, Jishen Zhang, Chao Wang, Haiwen Xu, Yan Liang, Charles Lim, and Xiao Gong Phys. Rev. Applied 20, 034049 (2023) – Published 21 September 2023 | | | C. Pellet-Mary, M. Perdriat, P. Huillery, and G. Hétet Phys. Rev. Applied 20, 034050 (2023) – Published 21 September 2023 | | | Long Zhang, Jing Pan, Min Li, Ivo A.W. Filot, Emiel J.M. Hensen, and Hui Wang Phys. Rev. Applied 20, 034051 (2023) – Published 21 September 2023 | | | Marc Rovirola, M. Waqas Khaliq, Blai Casals, Michael Foerster, Miguel Angel Niño, Lucía Aballe, Jens Herfort, Joan Manel Hernàndez, Ferran Macià, and Alberto Hernández-Mínguez Phys. Rev. Applied 20, 034052 (2023) – Published 22 September 2023 | | | A.D. Liu, Z.Y. Liu, K. Li, Y.L. Yao, C.T. Zhou, S.P. Zhu, X.T. He, and B. Qiao Phys. Rev. Applied 20, 034053 (2023) – Published 22 September 2023 | | | M.A. Beck, M. Selvanayagam, A. Carniol, S. Cairns, and C.P. Mancini Phys. Rev. Applied 20, 034054 (2023) – Published 22 September 2023 | | | M. Zhu, M. Matsubara, and E. Bellotti Phys. Rev. Applied 20, 034055 (2023) – Published 22 September 2023 | | | T.M. Hazard, A.J. Kerman, K. Serniak, and C. Tahan Phys. Rev. Applied 20, 034056 (2023) – Published 25 September 2023 | | | Lezheng Fang and Michael J. Leamy Phys. Rev. Applied 20, 034057 (2023) – Published 25 September 2023 | | | X.Y. Zhou, H. Wang, Q.M. Liu, S.J. Zhang, S.X. Xu, Q. Wu, R.S. Li, L. Yue, T.C. Hu, J.Y. Yuan, S.S. Han, T. Dong, D. Wu, and N.L. Wang Phys. Rev. Applied 20, 034058 (2023) – Published 25 September 2023 | | | Tianwen Huang, Loïc Becerra, Aurélie Gensbittel, Yunlin Zheng, Hakeim Talleb, Ulises Acevedo Salas, Zhuoxiang Ren, and Massimiliano Marangolo Phys. Rev. Applied 20, 034059 (2023) – Published 26 September 2023 | | | R.V. Ovcharov, B.A. Ivanov, J. Åkerman, and R.S. Khymyn Phys. Rev. Applied 20, 034060 (2023) – Published 26 September 2023 | | | Jiu-Xun Sun, Hong-Chun Yang, Yang Li, and Hai-Juan Cui Phys. Rev. Applied 20, 034061 (2023) – Published 26 September 2023 | | | Marika Svensson, Martin Andersson, Mattias Grönkvist, Pontus Vikstål, Devdatt Dubhashi, Giulia Ferrini, and Göran Johansson Phys. Rev. Applied 20, 034062 (2023) – Published 26 September 2023 | | | L.-Y. Wang, J.-F. Wei, K.-F. Cui, S.-L. Su, M. Feng, L.-L. Yan, G. Chen, H.-Z. Guo, and C.-X. Shan Phys. Rev. Applied 20, 034063 (2023) – Published 27 September 2023 | | | J.R. Capers Phys. Rev. Applied 20, 034064 (2023) – Published 27 September 2023 | | | Andreas Ketterer and Thomas Wellens Phys. Rev. Applied 20, 034065 (2023) – Published 27 September 2023 | | | Editors' Suggestion M. R. Hogg, M.G. House, P. Pakkiam, and M.Y. Simmons Phys. Rev. Applied 20, 034066 (2023) – Published 27 September 2023 | Quantum computing devices have the potential to solve problems that are beyond even the most powerful modern supercomputers. Most quantum hardware operates at temperatures near absolute zero, but controlling a quantum computer at cryogenic temperatures using signals propagating from room temperature becomes infeasible for large-scale processors. The authors explore a device that allows control signals to be generated on-chip at cryogenic temperatures, potentially mitigating this cryogenic bottleneck. Their device is fabricated in silicon using established technologies for quantum processors, providing a pathway towards a hybrid quantum-classical integrated circuit. | | | | | | Editors' Suggestion Joshua Ziegler, Florian Luthi, Mick Ramsey, Felix Borjans, Guoji Zheng, and Justyna P. Zwolak Phys. Rev. Applied 20, 034067 (2023) – Published 28 September 2023 | Many methods to automatically tune silicon spin qubits are limited by reliability and data efficiency, which makes them less likely to be scalable. The authors demonstrate a reliable, efficient, physics-informed tuning algorithm (PIT) for navigating to a target charge configuration⏤a prerequisite to forming qubits. This tuning method combines machine learning and physical intuition with an algorithm that leverages one-dimensional scans (rays) and conventional peak-finding to navigate from a coarse, unknown device state to a desired charge occupation efficiently and effectively. PIT enables the transformation of an uncalibrated circuit to a functioning quantum processor. | | | | | | Tiemo Pedergnana and Nicolas Noiray Phys. Rev. Applied 20, 034068 (2023) – Published 28 September 2023 | | | Xiao-Hai Zhan, Zhen-Qiu Zhong, Shuang Wang, Zhen-Qiang Yin, Wei Chen, De-Yong He, Guang-Can Guo, and Zheng-Fu Han Phys. Rev. Applied 20, 034069 (2023) – Published 28 September 2023 | | | D. Salomoni, Y. Peng, L. Farcis, S. Auffret, M. Hehn, G. Malinowski, S. Mangin, B. Dieny, L.D. Buda-Prejbeanu, R.C. Sousa, and I.L. Prejbeanu Phys. Rev. Applied 20, 034070 (2023) – Published 28 September 2023 | | | Vasu Dev and Vishwa Pal Phys. Rev. Applied 20, 034071 (2023) – Published 29 September 2023 | | | Chang-Kang Hu, Jiahao Yuan, Bruno A. Veloso, Jiawei Qiu, Yuxuan Zhou, Libo Zhang, Ji Chu, Orkesh Nurbolat, Ling Hu, Jian Li, Yuan Xu, Youpeng Zhong, Song Liu, Fei Yan, Dian Tan, R. Bachelard, Alan C. Santos, C.J. Villas-Boas, and Dapeng Yu Phys. Rev. Applied 20, 034072 (2023) – Published 29 September 2023 | | | L. Kneale, S.T. Wilson, T. Appleyard, J. Armitage, N. Holland, and M. Malek Phys. Rev. Applied 20, 034073 (2023) – Published 29 September 2023 | | | M.V. Petrenko, A.S. Pazgalev, and A.K. Vershovskii Phys. Rev. Applied 20, 034074 (2023) – Published 29 September 2023 | | | Review Article Jing Zhao, Jianlong Liu, Ruirui Jiang, Kaiqiang Yang, and Baoqing Zeng Phys. Rev. Applied 20, 037001 (2023) – Published 18 September 2023 | Technological progress in optical communication and signal-processing systems looks to ultrafast optical switches and modulators, and to ultrafast electron sources for imaging. This review discusses how to use surface plasmons to advance miniaturization and reduce energy consumption. Obstacles here include integrating such devices with conventional techniques, and the diffraction limit preventing the realization of subwavelength scale. In particular, the authors offer insight on the development trends and design of such ultrafast devices, in terms of the various advantages of surface plasmons in different nanostructures and materials. | | | | | | | |
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