Nonlinear time-reversal interferometry with arbitrary quadratic
collective-spin interaction
- URL: http://arxiv.org/abs/2308.04042v2
- Date: Wed, 29 Nov 2023 09:31:36 GMT
- Title: Nonlinear time-reversal interferometry with arbitrary quadratic
collective-spin interaction
- Authors: Zhiyao Hu, Qixian Li, Xuanchen Zhang, He-bin Zhang, Long-Gang Huang,
Yong-Chun Liu
- Abstract summary: We propose a time-reversal interferometry scheme with high robustness and metrological gain based on the spin squeezing generated by arbitrary quadratic collective-spin interaction.
Our study sets a benchmark in achieving high precision and robustness in atomic nonlinear interferometry.
- Score: 1.2318247536747362
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: 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 in achieving high precision and
robustness in atomic nonlinear interferometry.
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