Topological error correction with a Gaussian cluster state Author(s): Shuhong Hao, Meihong Wang, Dong Wang, and Xiaolong SuTopological error correction provides an effective method to correct errors in quantum computation. It allows quantum computation to be …
Fast and robust quantum state transfer via a topological chain Author(s): N. E. Palaiodimopoulos, I. Brouzos, F. K. Diakonos, and G. TheocharisWe propose a fast and robust quantum state transfer protocol employing a Su-Schrieffer-Heeger chain, where the interchai …
Optimal single-shot discrimination of optical modes Author(s): Ignatius William Primaatmaja, Asaph Ho, and Valerio ScaraniRetrieving classical information encoded in optical modes is at the heart of many quantum information processing tasks, especially …
Standing-wave solutions in twisted multicore fibers Author(s): Ross Parker and Alejandro AcevesIn the present work, we consider the existence and spectral stability of standing-wave solutions to a model for light propagation in a twisted multicore fibe …
Radiation signal accompanying the Schwinger effect Author(s): I. A. Aleksandrov, A. D. Panferov, and S. A. SmolyanskyThe properties of the forced oscillations of virtual electron-positron plasma generated in vacuum under the action of a short laser pu …
Gauge principle and gauge invariance in two-level systems Author(s): Salvatore Savasta, Omar Di Stefano, Alessio Settineri, David Zueco, Stephen Hughes, and Franco NoriThe quantum Rabi model is a widespread description of the coupling between a two-level sys …
Ultimate limits of thermal pattern recognition Author(s): Cillian Harney, Leonardo Banchi, and Stefano PirandolaQuantum channel discrimination presents a fundamental task in quantum information theory, with critical applications in quantum reading …
Superfluid vortex dynamics on a spherical film Author(s): Sálvio J. Bereta, Mônica A. Caracanhas, and Alexander L. FetterMotivated by ongoing experimental efforts to make closed Bose-Einstein condensate shells in microgravity environments, this wo …
Characterizing quantum networks: Insights from coherence theory Author(s): Tristan Kraft, Cornelia Spee, Xiao-Dong Yu, and Otfried GühneNetworks based on entangled quantum systems enable interesting applications in quantum information processing and the understand …
Improving phase estimation using number-conserving operations Author(s): Huan Zhang, Wei Ye, Chaoping Wei, Cunjin Liu, Zeyang Liao, and Liyun HuWe propose a theoretical scheme to improve the resolution and precision of phase measurement with parity detection by …
Quantum-state reconstruction of unidirectional molecular rotations Author(s): Kazuki Ueno, Kenta Mizuse, and Yasuhiro OhshimaThe authors develop and implement experimentally a procedure for quantum-state reconstruction of the complete rotational wave function of a si …
Geometric constraints on two-electron reduced density matrices Author(s): Yimin LiFor many-electron systems, the second-order reduced density matrix (2-RDM) provides sufficient information for characterizing their properties of interests in physics and chemistry. …
Quantum lock-in detection of a vector light shift Author(s): Kosuke Shibata, Naota Sekiguchi, and Takuya HiranoWe demonstrate detection of a vector light shift (VLS) using the quantum lock-in method. The method offers precise VLS measurement with lit …
Average quantum coherence of pure-state decomposition Author(s): Ming-Jing Zhao, Teng Ma, and Rajesh PereiraWe study the average quantum coherence over the pure state decompositions of a mixed quantum state. An upper bound of the average quantum coherenc …
Recycling qubits in near-term quantum computers Author(s): Galit Anikeeva, Isaac H. Kim, and Patrick HaydenThe authors propose a protocol that can unitarily reset or recycle qubits when the circuit has a common convolutional form. This protocol cou …
Idler-free channel position finding Author(s): Jason L. Pereira, Leonardo Banchi, Quntao Zhuang, and Stefano PirandolaEntanglement is a powerful tool for quantum sensing, and entangled states can greatly boost the discriminative power o …
Generalizable control for multiparameter quantum metrology Author(s): Han Xu, Lingna Wang, Haidong Yuan, and Xin WangQuantum control can be employed in quantum metrology to improve the precision limit for the estimation of unknown parameters. The optimal cont …
Continuous-variable multipartite vibrational entanglement Author(s): Mehdi AbdiA compact scheme for the preparation of macroscopic multipartite entanglement is proposed and analyzed. In this scheme, the vibrational modes of a mechanical resonator constitute …
Thermophonon flux in double-cavity optomechanics Author(s): Yu Wu, Wenjie Nie, Guoyao Li, Aixi Chen, and Yueheng LanWe propose theoretically an optomechanical system with double cavities to explore the thermophonon transport from the thermal bath of …
Time-traveling billiard-ball clocks: A quantum model Author(s): Lachlan G. Bishop, Fabio Costa, and Timothy C. RalphClosed timelike curves, along which an object can travel to its past, are interesting because they are predicted by general relativity an …
Coherence of operations and interferometry Author(s): Michele Masini, Thomas Theurer, and Martin B. PlenioThe authors apply dynamical resource theories to interferometers and introduce families of resource measures which allow them to give ope …
Robust in practice: Adversarial attacks on quantum machine learning Author(s): Haoran Liao, Ian Convy, William J. Huggins, and K. Birgitta WhaleyState-of-the-art classical neural networks are observed to be vulnerable to small crafted adversarial perturbations. A more …
Early-time behavior of quantum subharmonic generation Author(s): Yunjin Choi, Boerge Hemmerling, Shan-Wen Tsai, and Allen P. Mills, Jr.A few years ago Avetissian et al. [Phys. Rev. Lett. 113, 023904 (2014); Phys. Rev. A 92, 023820 (2015)] discovered that …
Quantum estimation in strong fields: In situ ponderomotive sensing Author(s): A. S. Maxwell, A. Serafini, S. Bose, and C. Figueira de Morisson FariaWe develop a theoretical framework to optimize and understand uncertainty from in situ strong-field measurements of las …
Local probability conservation in discrete-time quantum walks Author(s): Samuel T. Mister, Benjamin J. Arayathel, and Anthony J. ShortWe show that probability is locally conserved in discrete-time quantum walks, corresponding to a particle evolving in discrete s …
Relaxation to equilibrium in controlled-not quantum networks Author(s): J. Novotný, A. Mariano, S. Pascazio, A. Scardicchio, and I. JexThe approach to equilibrium of quantum mechanical systems is a topic as old as quantum mechanics itself, but has recently seen …
Distortion of Rabi oscillations in a compact cold-atom clock Author(s): Xinchuan Ouyang, Bowen Yang, Qingqing Hu, Hanghang Qi, Ling Xiao, Jinyin Wan, and Huadong ChengWe report on experimental measurements and theoretical calculations of Rabi oscillation distor …
Spectral singularities with directional sensitivity Author(s): Hamidreza RamezaniWe propose a class of spectral singularities that are sensitive to the direction of excitation and arise in nonlinear systems with broken parity symmetry. These spectral s …
Quantum limits for stationary force sensing Author(s): Farid Ya. Khalili and Emil ZeuthenState-of-the-art linear sensors of force, motion, and magnetic fields have reached the sensitivity where the quantum noise of the meter is significant or e …
Coherence as uncertainty Author(s): Yuan Sun and Shunlong LuoCoherence of a quantum state (with respect to a fixed incoherent basis) is usually quantified by distancelike quantities, among which a particularly convenient and …