Nonlinear time-reversal interferometry with arbitrary quadratic collective-spin interaction

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外文摘要：Atomic nonlinear interferometry has wide applications in quantum metrology and quantum information science.Here we propose a nonlinear time-reversal interferometry scheme with high robustness and metrological gain based on the spin squeezing generated by arbitrary quadratic collective-spin interaction,which could be described by the Lipkin-Meshkov-Glick(LMG)model.We optimize the squeezing process,encoding process,and anti-squeezing process,finding that the two particular cases of the LMG model,one-axis twisting and two-axis twisting outperform in robustness and precision,respectively.Moreover,we propose a Floquet driving method to realize equivalent time reverse in the atomic system,which leads to high performance in precision,robustness,and operability.Our study sets a benchmark for achieving high precision and high robustness in atomic nonlinear interferometry.

外文关键词：

time-reversal interferometryspin squeezingquantum metrology

作者：

胡知遥、李其贤、张轩晨、张贺宾、黄龙刚、刘永椿

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作者单位：

State Key Laboratory of Low-Dimensional Quantum Physics,Department of Physics,Tsinghua University,Beijing 100084,China

School of Physics,Xi'an Jiaotong University,Xi'an 710049,China

China Fire and Rescue Institute,Beijing 102202,China

Frontier Science Center for Quantum Information,Beijing 100084,China

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基金：

National Key R&D Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

项目编号：

2023YFA14076001227514592050110917361061167439091836302

出版年：

2024

DOI：

10.1088/1674-1056/ad4ff7

中国物理B(英文版)

中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI

影响因子：0.995

ISSN：1674-1056

年,卷(期)：2024.33(8)