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HIGHLIGHTED ARTICLES

Active Mie-like resonance for noninvasive glucose detection

Hoyeong Kwon and Andrea Alù

Phys. Rev. Applied 21, 034060 (2024) - Published 28 March, 2024

A proposed ring-shaped device could measure the concentration of glucose in a person’s blood to an accuracy sufficient to make it clinically useful.

Nonlinear dynamics in neuromorphic photonic networks: Physical simulation in Verilog-A

Hugh Morison, Jagmeet Singh, Nayem Al Kayed, A. Aadhi, Maryam Moridsadat, Marcus Tamura, Alexander N. Tait, and Bhavin J. Shastri

Phys. Rev. Applied 21, 034013 (2024) - Published 8 March, 2024

Recurrent neural networks based on silicon photonics can take on a wide range of dynamical features at high bandwidth, but experimental demonstrations are being held back by of the lack of a physical-level simulation platform that accounts for parasitic effects. This study uses photonic Verilog-A models to demonstrate characteristic neural dynamics. Simulation reveals that these dynamics exhibit a topological equivalence to the continuous-time recurrent-neural-network model.

Ambipolar ion pumping with ratchet-driven active membranes

Alon Herman and Gideon Segev

Phys. Rev. Applied 21, 034056 (2024) - Published 26 March, 2024

Artificial active membranes that drive ions up a concentration gradient could pave the way to breakthroughs in numerous fields. This work analyzes the performance of a membrane that utilizes a “flashing” ratchet mechanism to pump ions, accounting for all essential mechanisms governing charge transport. Surprisingly, although driven by electrical fields, both cations and anions are transported in the same direction. This makes the membrane an excellent candidate for distributed water desalination and biomedical applications.

Unbiased random bitstream generation using injection-locked spin-torque nano-oscillators

Nhat-Tan Phan, Nitin Prasad, Abderrazak Hakam, Ahmed Sidi El Valli, Lorena Anghel, Luana Benetti, Advait Madhavan, Alex S. Jenkins, Ricardo Ferreira, Mark D. Stiles, Ursula Ebels, and Philippe Talatchian

Phys. Rev. Applied 21, 034063 (2024) - Published 29 March, 2024

Unbiased sources of true randomness are crucial for the next generation of encryption applications and stochastic computing in various fields, yet achieving such randomness without bias has remained technically challenging. This study introduces an innovative hardware approach, utilizing the intrinsic balance of phase noise in a spintronic nano-oscillator synchronized at twice its natural frequency to overcome bias in random bitstream generation at room temperature. The method generates truly random bitstreams with efficiency and reliability that is expected to significantly impact cybersecurity, advanced computing, and more.

Programmable electrical coupling between stochastic magnetic tunnel junctions

Sidra Gibeault, Temitayo N. Adeyeye, Liam A. Pocher, Daniel P. Lathrop, Matthew W. Daniels, Mark D. Stiles, Jabez J. McClelland, William A. Borders, Jason T. Ryan, Philippe Talatchian, Ursula Ebels, and Advait Madhavan

Phys. Rev. Applied 21, 034064 (2024) - Published 29 March, 2024

Recent probabilistic computing frameworks have used a microprocessors-in-the-loop approach to sensing output signals and applying control voltages. Here the authors study the dynamics of an analog, two-spin Ising computer built from superparamagnetic tunnel junctions (SMTJs). The op-amp-based circuit features polarity selection and programmable gain, allowing both positive and negative coupling and the performance of simulated annealing. While scaling of this design requires only trivial circuit modifications, large networks of spins would require SMTJs with enhanced properties, suggesting that a co-design approach between devices, architectures, and algorithms is necessary.

LETTERS

Magnonic spin-current shot noise in an itinerant Fermi gas

Tingyu Zhang, Hiroyuki Tajima, and Haozhao Liang

Phys. Rev. Applied 21, L031001 (2024) - Published 1 March, 2024

While spin transport plays an important role in fundamental physics as well as spintronics applications, the spin-flip tunneling process associated with magnon transport remains elusive in ultracold Fermi gases. This study propose a method for detecting spin-flip tunneling via the Fano factor, which is defined as the noise-to-current ratio and is proportional to the effective charge of carriers. The authors show that the tunneling channel can be altered by tuning either the interaction strength or the potential barrier. This result could strongly impact the study of spin-transport phenomena, and our understanding of quantum transport in strongly interacting systems.

Broadband detection of 18 teeth in an 11-dB squeezing comb

Dennis Wilken, Jonas Junker, and Michèle Heurs

Phys. Rev. Applied 21, L031002 (2024) - Published 4 March, 2024

Broadband, high-frequency squeezed light sources offer vast scaling potential in quantum information. However, broadband and efficient homodyne detectors must first be found, to efficiently utilize this potential. Departing from the common wisdom that homodyning requires balanced detection, the authors simultaneously measure 18 teeth of an 11-dB squeezing frequency comb on an unbalanced photodetector, over a multigigahertz bandwidth. This approach demonstrates that it is worth questioning the necessity of balanced homodyne detection in high-speed quantum optics.

Highly sensitive microwave electrometry with enhanced instantaneous bandwidth

Bowen Yang, Yuhan Yan, Xuejie Li, Ling Xiao, Xiaolin Li, L.Q. Chen, Jianliao Deng, and Huadong Cheng

Phys. Rev. Applied 21, L031003 (2024) - Published 6 March, 2024

Rydberg microwave electrometry has attracted great attention, due to its potential application in radar and communication, but simultaneously achieving high sensitivity and broad instantaneous bandwidth remains a challenge. This study demonstrates an enhanced instantaneous bandwidth of ±10.2 MHz with sensitivity of 62 nV cm1 Hz1/2 by the amplification of one sideband wave in the six-wave-mixing process of a Rydberg superheterodyne receiver.

ARTICLES

Anomalous thermal effect in ZrTe5 observed via photothermal measurements

Makoto Tsuneto, Ran Jing, Xinzhong Chen, Sahal Kaushik, Juntao Yao, Dmitri E. Kharzeev, Xu Du, Qiang Li, and Mengkun Liu

Phys. Rev. Applied 21, 034001 (2024) - Published 1 March, 2024

Effective-density-matrix approach for intersubband plasmons coupled to a cavity field: Electrical extraction and injection of intersubband polaritons

M. Lagrée, M. Jeannin, G. Quinchard, S. Pes, A. Evirgen, A. Delga, V. Trinité, and R. Colombelli

Phys. Rev. Applied 21, 034002 (2024) - Published 1 March, 2024

Quantum thermochemical engines

Ugo Marzolino

Phys. Rev. Applied 21, 034003 (2024) - Published 4 March, 2024

Optimal entanglement-assisted electromagnetic sensing and communication in the presence of noise

Haowei Shi, Bingzhi Zhang, Jeffrey H. Shapiro, Zheshen Zhang, and Quntao Zhuang

Phys. Rev. Applied 21, 034004 (2024) - Published 4 March, 2024

Sampled subblock hashing for large-input randomness extraction

Hong Jie Ng, Wen Yu Kon, Ignatius William Primaatmaja, Chao Wang, and Charles Lim

Phys. Rev. Applied 21, 034005 (2024) - Published 5 March, 2024

Continuous generation of an ultracold atomic beam using crossed moving optical lattices

Shoichi Okaba, Ryoto Takeuchi, Shigenori Tsuji, and Hidetoshi Katori

Phys. Rev. Applied 21, 034006 (2024) - Published 5 March, 2024

High-efficiency and large-numerical-aperture focusing with subdiffraction resolution using a hybrid elastic metalens

Huichun Peng and Jun Mei

Phys. Rev. Applied 21, 034007 (2024) - Published 5 March, 2024

Fe and Co adatoms on bilayer borophene as single-atom catalysts for the oxygen-reduction reaction: A theoretical study

Walter Orellana and Roberto H. Miwa

Phys. Rev. Applied 21, 034008 (2024) - Published 6 March, 2024

Classification of skyrmionic textures and extraction of Hamiltonian parameters via machine learning

Dushuo Feng, Zhihao Guan, Xiaoping Wu, Yan Wu, and Changsheng Song

Phys. Rev. Applied 21, 034009 (2024) - Published 6 March, 2024

Quantum algorithm for the radiative-transfer equation

Asuka Igarashi, Tadashi Kadowaki, and Shiro Kawabata

Phys. Rev. Applied 21, 034010 (2024) - Published 7 March, 2024

Magnetic-field-free nonreciprocal transport in graphene multiterminal Josephson junctions

Fan Zhang, Asmaul Smitha Rashid, Mostafa Tanhayi Ahari, George J. de Coster, Takashi Taniguchi, Kenji Watanabe, Matthew J. Gilbert, Nitin Samarth, and Morteza Kayyalha

Phys. Rev. Applied 21, 034011 (2024) - Published 8 March, 2024

High-rate subgigahertz-linewidth bichromatic entanglement source for quantum networking

Alexander N. Craddock, Yang Wang, Felipe Giraldo, Rourke Sekelsky, Mael Flament, and Mehdi Namazi

Phys. Rev. Applied 21, 034012 (2024) - Published 8 March, 2024

Nonlinear dynamics in neuromorphic photonic networks: Physical simulation in Verilog-A

Hugh Morison, Jagmeet Singh, Nayem Al Kayed, A. Aadhi, Maryam Moridsadat, Marcus Tamura, Alexander N. Tait, and Bhavin J. Shastri

Phys. Rev. Applied 21, 034013 (2024) - Published 8 March, 2024

Recurrent neural networks based on silicon photonics can take on a wide range of dynamical features at high bandwidth, but experimental demonstrations are being held back by of the lack of a physical-level simulation platform that accounts for parasitic effects. This study uses photonic Verilog-A models to demonstrate characteristic neural dynamics. Simulation reveals that these dynamics exhibit a topological equivalence to the continuous-time recurrent-neural-network model.

Sensing microscopic noise events by frequent quantum measurements

Salvatore Virzì, Laura T. Knoll, Alessio Avella, Fabrizio Piacentini, Stefano Gherardini, Marco Gramegna, Gershon Kurizki, Abraham G. Kofman, Ivo Pietro Degiovanni, Marco Genovese, and Filippo Caruso

Phys. Rev. Applied 21, 034014 (2024) - Published 8 March, 2024

Highly efficient abnormal reflection via underwater acoustic metagratings

Junmei Cao, Hongyu Ma, Shuhuan Xie, Jiayan Li, Yong Li, and Qian Cheng

Phys. Rev. Applied 21, 034015 (2024) - Published 8 March, 2024

Silica seed particles improve the efficiency and throughput of nanoparticle acoustic trapping

Megan Havers, Thierry Baasch, Andreas Lenshof, Mikael Evander, and Thomas Laurell

Phys. Rev. Applied 21, 034016 (2024) - Published 11 March, 2024

Optical excitation of multiple standing spin modes in three-dimensional optomagnonic nanocavities

Daria O. Ignatyeva, Denis M. Krichevsky, Dolendra Karki, Anton Kolosvetov, Polina E. Zimnyakova, Alexander N. Shaposhnikov, Vladimir N. Berzhansky, Miguel Levy, Alexander I. Chernov, and Vladimir I. Belotelov

Phys. Rev. Applied 21, 034017 (2024) - Published 11 March, 2024

Three-qubit parity gate via simultaneous cross-resonance drives

Toshinari Itoko, Moein Malekakhlagh, Naoki Kanazawa, and Maika Takita

Phys. Rev. Applied 21, 034018 (2024) - Published 11 March, 2024

Spectral analysis of solar-irradiance fluctuations

G. Bel and M.M. Bandi

Phys. Rev. Applied 21, 034019 (2024) - Published 12 March, 2024

Systematic design and experimental realization of multiplexed acoustic double-zero-index metamaterials

Yifan Tang, Bin Liang, Xuefeng Zhu, and Shuyu Lin

Phys. Rev. Applied 21, 034020 (2024) - Published 12 March, 2024

Modal interface for structured light via liquid-crystal planar optics

Chun-Yu Li, Si-Jia Liu, Hai-Jun Wu, Jia-Qi Jiang, Bo Zhao, Carmelo Rosales-Guzmán, Zhi-Han Zhu, Peng Chen, and Yan-Qing Lu

Phys. Rev. Applied 21, 034021 (2024) - Published 12 March, 2024

Singlet-triplet-state readout in silicon metal-oxide-semiconductor double quantum dots

Rong-Long Ma, Sheng-Kai Zhu, Zhen-Zhen Kong, Tai-Ping Sun, Ming Ni, Yu-Chen Zhou, Yuan Zhou, Gang Luo, Gang Cao, Gui-Lei Wang, Hai-Ou Li, and Guo-Ping Guo

Phys. Rev. Applied 21, 034022 (2024) - Published 13 March, 2024

4-Clique network minor embedding for quantum annealers

Elijah Pelofske

Phys. Rev. Applied 21, 034023 (2024) - Published 13 March, 2024

Tunable topologically protected waveguiding in auxetic nonlinear metamaterials

M. Morvaridi, F. Bosia, M. Brun, V.F. Dal Poggetto, A.S. Gliozzi, M. Miniaci, C. Croënne, N.M. Pugno, and G. Carta

Phys. Rev. Applied 21, 034024 (2024) - Published 13 March, 2024

Three-dimensional self-accelerating acoustic beam based on artificial Archimedean-spiral slits

Di-Chao Chen, Hao-Yue Zhu, Da-Jian Wu, Xing-Feng Zhu, Ying Cheng, and Xiao-Jun Liu

Phys. Rev. Applied 21, 034025 (2024) - Published 14 March, 2024

Super Klein tunneling in phononic Lieb lattices

Hao Wu, Hailong He, Ze Dong, Liping Ye, Weiyin Deng, Manzhu Ke, and Zhengyou Liu

Phys. Rev. Applied 21, 034026 (2024) - Published 14 March, 2024

Using the inductive-energy participation ratio to characterize a superconducting quantum chip

Ke-Hui Yu, Xiao-Yang Jiao, and Li-Jing Jin

Phys. Rev. Applied 21, 034027 (2024) - Published 14 March, 2024

Electromechanical coupling effect in a ferroelectric hPbO monolayer

Shuoke Xu, Xikui Ma, Kehan Liu, and Mingwen Zhao

Phys. Rev. Applied 21, 034028 (2024) - Published 15 March, 2024

Polarization entanglement by two simultaneous backward phase-matching processes in a single crystal

Ming-Yuan Gao, Yin-Hai Li, Zhao-Qi-Zhi Han, Qiang Zhou, Guang-Can Guo, Zhi-Yuan Zhou, and Bao-Sen Shi

Phys. Rev. Applied 21, 034029 (2024) - Published 15 March, 2024

Generation of heralded vector-polarized single photons in remotely controlled topological classes

Samuel Corona-Aquino, Zeferino Ibarra-Borja, Omar Calderón-Losada, Bruno Piccirillo, Verónica Vicuña-Hernández, Tonatiuh Moctezuma-Quistian, Hector Cruz-Ramírez, Dorilian Lopez-Mago, and Alfred B. U’Ren

Phys. Rev. Applied 21, 034030 (2024) - Published 15 March, 2024

Gate-compatible circuit quantum electrodynamics in a three-dimensional cavity architecture

Zezhou Xia, Jierong Huo, Zonglin Li, Jianghua Ying, Yulong Liu, Xin-Yi Tang, Yuqing Wang, Mo Chen, Dong Pan, Shan Zhang, Qichun Liu, Tiefu Li, Lin Li, Ke He, Jianhua Zhao, Runan Shang, and Hao Zhang

Phys. Rev. Applied 21, 034031 (2024) - Published 18 March, 2024

Temperature dependence of the magnon-phonon interaction in hybrids of high-overtone bulk acoustic resonators with ferromagnetic thin films

M. Müller, J. Weber, S.T.B. Goennenwein, S. Viola Kusminskiy, R. Gross, M. Althammer, and H. Huebl

Phys. Rev. Applied 21, 034032 (2024) - Published 18 March, 2024

Optimizing edge-state transfer in a Su-Schrieffer-Heeger chain via hybrid analog-digital strategies

Sebastián V. Romero, Xi Chen, Gloria Platero, and Yue Ban

Phys. Rev. Applied 21, 034033 (2024) - Published 18 March, 2024

Combinatorial split-ring and spiral metaresonator for efficient magnon-photon coupling

Yuzan Xiong, Andrew Christy, Yun Dong, Andrew H. Comstock, Dali Sun, Yi Li, James F. Cahoon, Binbin Yang, and Wei Zhang

Phys. Rev. Applied 21, 034034 (2024) - Published 18 March, 2024

Imaging with high resolution and wide field of view based on an ultrathin microlens array

Xueqian Wang, Chuanbao Liu, Lijie Qiao, Ji Zhou, Yang Bai, and Jingbo Sun

Phys. Rev. Applied 21, 034035 (2024) - Published 19 March, 2024

Molecular docking via quantum approximate optimization algorithm

Qi-Ming Ding, Yi-Ming Huang, and Xiao Yuan

Phys. Rev. Applied 21, 034036 (2024) - Published 19 March, 2024

Discerning the internal spatial heavy-atom effect on the organic phosphorescence of 9-phenylcarbazole by transient absorption spectroscopy

Yang Liu, Zhinan Jiang, Lina Ding, Yonggang Yang, Tiantian Guan, Chaochao Qin, and Yufang Liu

Phys. Rev. Applied 21, 034037 (2024) - Published 19 March, 2024

Crystal-facet-oriented altermagnets for detecting ferromagnetic and antiferromagnetic states by giant tunneling magnetoresistance

Boyuan Chi, Leina Jiang, Yu Zhu, Guoqiang Yu, Caihua Wan, Jia Zhang, and Xiufeng Han

Phys. Rev. Applied 21, 034038 (2024) - Published 19 March, 2024

Polarization-modulating switchable and selectable image display through an ultrathin quasi-bound-state-in-the-continuum metasurface

Zonglin Li, Guozheng Nie, Junhui Wang, Fang Zhong, and Shiping Zhan

Phys. Rev. Applied 21, 034039 (2024) - Published 20 March, 2024

Tuning of exchange constants and magnetic anisotropy for terahertz antiferromagnetic resonance frequencies in cation-doped NiO

Kenji Nawa, Andi Gumarilang, Takahiro Moriyama, and Kohji Nakamura

Phys. Rev. Applied 21, 034040 (2024) - Published 20 March, 2024

Superdispersive plasmonic metamaterial

V.M. Muravev, K.R. Dzhikirba, M.S. Sokolova, A.S. Astrakhantseva, and I.V. Kukushkin

Phys. Rev. Applied 21, 034041 (2024) - Published 20 March, 2024

Multiple classical noise mitigation by multiobjective robust quantum optimal control

Bowen Shao, Xiaodong Yang, Ran Liu, Yue Zhai, Dawei Lu, Tao Xin, and Jun Li

Phys. Rev. Applied 21, 034042 (2024) - Published 20 March, 2024

Extended states isolated in the band gap in non-Hermitian electrical circuits

Zhenyi Lu, Xiangru Chen, Yejian Hu, Jien Wu, Jiuyang Lu, Xueqin Huang, Weiyin Deng, and Zhengyou Liu

Phys. Rev. Applied 21, 034043 (2024) - Published 21 March, 2024

Probing carrier and phonon transport in semiconductors all at once through frequency-domain photoreflectance

Qichen Song, Sorren Warkander, and Samuel C. Huberman

Phys. Rev. Applied 21, 034044 (2024) - Published 21 March, 2024

High-order photonic spin Hall effect and its application in high-contrast imaging

Shanshan He, Yichang Shou, Dingyu Xu, Qiang Yang, Jiawei Liu, Shizhen Chen, and Hailu Luo

Phys. Rev. Applied 21, 034045 (2024) - Published 21 March, 2024

Quantum dot coupled to a suspended-beam mechanical resonator: From the unresolved- to the resolved-sideband regime

Clemens Spinnler, Giang N. Nguyen, Ying Wang, Marcel Erbe, Alisa Javadi, Liang Zhai, Sven Scholz, Andreas D. Wieck, Arne Ludwig, Peter Lodahl, Leonardo Midolo, and Richard J. Warburton

Phys. Rev. Applied 21, 034046 (2024) - Published 21 March, 2024

Asymmetric transport in sonic valley Hall insulators

Chengxin Deng, Yiqin Yang, Jin Li, Xu Zhang, Yingjian Yu, Qiao Lu, and Hai Yang

Phys. Rev. Applied 21, 034048 (2024) - Published 22 March, 2024

Sol-gel transition by evaporation in porous media

Romane Le Dizès Castell, Leo Pel, Tinhinane Chekai, Hannelore Derluyn, Mario Scheel, Sara Jabbari-Farouji, and Noushine Shahidzadeh

Phys. Rev. Applied 21, 034049 (2024) - Published 22 March, 2024

Closed-loop dual-atom-interferometer inertial sensor with continuous cold atomic beams

Zhi-Xin Meng (孟至欣), Pei-Qiang Yan (颜培强), Sheng-Zhe Wang (王圣哲), Xiao-Jie Li (李晓杰), Hong-Bo Xue (薛洪波), and Yan-Ying Feng (冯焱颖)

Phys. Rev. Applied 21, 034050 (2024) - Published 22 March, 2024

Toward digital twins by one-dimensional simulation of thin-film solar cells: Cu(In,Ga)Se2 as an example

Matthias Maiberg, Chang-Yun Song, Marcin Morawski, Felix Neduck, Heiko Kempa, Joshua Damm, Dimitrios Hariskos, Wolfram Witte, and Roland Scheer

Phys. Rev. Applied 21, 034051 (2024) - Published 25 March, 2024

Exploring parity magnetic effects through quantum simulation with superconducting qubits

Yu Zhang, Yan-Qing Zhu, Jianwen Xu, Wen Zheng, Dong Lan, Giandomenico Palumbo, Nathan Goldman, Shi-Liang Zhu, Xinsheng Tan, Z.D. Wang, and Yang Yu

Phys. Rev. Applied 21, 034052 (2024) - Published 25 March, 2024

Weak entanglement improves quantum communication using only product measurements

Amélie Piveteau, Alastair A. Abbott, Sadiq Muhammad, Mohamed Bourennane, and Armin Tavakoli

Phys. Rev. Applied 21, 034053 (2024) - Published 25 March, 2024

Multiparameter quantum sensing and magnetic communication with a hybrid dc and rf optically pumped magnetometer

Michał Lipka, Aleksandra Sierant, Charikleia Troullinou, and Morgan W. Mitchell

Phys. Rev. Applied 21, 034054 (2024) - Published 26 March, 2024

Graphical impedance-matching method for a superconducting parametric amplifier

Kaiyong He, Qing Yu, Liangliang Yang, Yongcheng He, Jianshe Liu, and Wei Chen

Phys. Rev. Applied 21, 034055 (2024) - Published 26 March, 2024

Ambipolar ion pumping with ratchet-driven active membranes

Alon Herman and Gideon Segev

Phys. Rev. Applied 21, 034056 (2024) - Published 26 March, 2024

Artificial active membranes that drive ions up a concentration gradient could pave the way to breakthroughs in numerous fields. This work analyzes the performance of a membrane that utilizes a “flashing” ratchet mechanism to pump ions, accounting for all essential mechanisms governing charge transport. Surprisingly, although driven by electrical fields, both cations and anions are transported in the same direction. This makes the membrane an excellent candidate for distributed water desalination and biomedical applications.

Magneto-optical studies of organic electroluminescent materials having fast reverse intersystem crossing

Xin Pan, Dipak Raj Khanal, Ohyun Kwon, and Zeev Valy Vardeny

Phys. Rev. Applied 21, 034057 (2024) - Published 27 March, 2024

Enhancement of photon blockade via topological edge states

Jun Li, C.-M. Hu, and Yaping Yang

Phys. Rev. Applied 21, 034058 (2024) - Published 27 March, 2024

Entanglement-variational hardware-efficient ansatz for eigensolvers

Xin Wang, Bo Qi, Yabo Wang, and Daoyi Dong

Phys. Rev. Applied 21, 034059 (2024) - Published 27 March, 2024

Active Mie-like resonance for noninvasive glucose detection

Hoyeong Kwon and Andrea Alù

Phys. Rev. Applied 21, 034060 (2024) - Published 28 March, 2024

A proposed ring-shaped device could measure the concentration of glucose in a person’s blood to an accuracy sufficient to make it clinically useful.

Nonreciprocal entanglement of ferrimagnetic magnons and nitrogen-vacancy-center ensembles by Kerr nonlinearity

Deyi Kong, Jun Xu, and Fei Wang

Phys. Rev. Applied 21, 034061 (2024) - Published 28 March, 2024

Light-wave manipulation of subwavelength metallic gratings by electrically controlling the surface charge distribution based on surface-plasmon excitation

Chai Hu, Taige Liu, Kewei Liu, Zhe Wang, Mao Ye, Jiashuo Shi, and Xinyu Zhang

Phys. Rev. Applied 21, 034062 (2024) - Published 28 March, 2024

Unbiased random bitstream generation using injection-locked spin-torque nano-oscillators

Nhat-Tan Phan, Nitin Prasad, Abderrazak Hakam, Ahmed Sidi El Valli, Lorena Anghel, Luana Benetti, Advait Madhavan, Alex S. Jenkins, Ricardo Ferreira, Mark D. Stiles, Ursula Ebels, and Philippe Talatchian

Phys. Rev. Applied 21, 034063 (2024) - Published 29 March, 2024

Unbiased sources of true randomness are crucial for the next generation of encryption applications and stochastic computing in various fields, yet achieving such randomness without bias has remained technically challenging. This study introduces an innovative hardware approach, utilizing the intrinsic balance of phase noise in a spintronic nano-oscillator synchronized at twice its natural frequency to overcome bias in random bitstream generation at room temperature. The method generates truly random bitstreams with efficiency and reliability that is expected to significantly impact cybersecurity, advanced computing, and more.

Programmable electrical coupling between stochastic magnetic tunnel junctions

Sidra Gibeault, Temitayo N. Adeyeye, Liam A. Pocher, Daniel P. Lathrop, Matthew W. Daniels, Mark D. Stiles, Jabez J. McClelland, William A. Borders, Jason T. Ryan, Philippe Talatchian, Ursula Ebels, and Advait Madhavan

Phys. Rev. Applied 21, 034064 (2024) - Published 29 March, 2024

Recent probabilistic computing frameworks have used a microprocessors-in-the-loop approach to sensing output signals and applying control voltages. Here the authors study the dynamics of an analog, two-spin Ising computer built from superparamagnetic tunnel junctions (SMTJs). The op-amp-based circuit features polarity selection and programmable gain, allowing both positive and negative coupling and the performance of simulated annealing. While scaling of this design requires only trivial circuit modifications, large networks of spins would require SMTJs with enhanced properties, suggesting that a co-design approach between devices, architectures, and algorithms is necessary.

Optical creation and annihilation of skyrmion patches in a chiral magnet

J. Kalin, S. Sievers, H.W. Schumacher, R. Abram, H. Füser, M. Bieler, D. Kalin, A. Bauer, and C. Pfleiderer

Phys. Rev. Applied 21, 034065 (2024) - Published 29 March, 2024

Increase in the signal-to-noise ratio of the beat note between a frequency comb and a continuous-wave laser

Shen Zhang, Qi Shen, Lei Hou, Jian-Yu Guan, Shengkai Liao, Qiang Zhang, and Hai-Feng Jiang

Phys. Rev. Applied 21, 034066 (2024) - Published 29 March, 2024

ERRATA

Erratum: Designing optimal linear detectors: a bottom-up approach [Phys. Rev. Applied 19, 034009 (2023)]

Joe Bentley, Hendra Nurdin, Yanbei Chen, Xiang Li, and Haixing Miao

Phys. Rev. Applied 21, 039901 (2024) - Published 14 March, 2024

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