首页|Cavity-enhanced metrology in an atomic spin-1 Bose-Einstein condensate

Cavity-enhanced metrology in an atomic spin-1 Bose-Einstein condensate

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Atom interferometer has been proven to be a powerful tool for precision metrology.Here we propose a cavity-aided nonlinear atom interferometer,based on the quasi-periodic spin mixing dynamics of an atomic spin-1 Bose-Einstein condensate trapped in an optical cavity.We unravel that the phase sensitivity can be greatly enhanced with the cavity-mediated nonlinear interaction.The influence of encoding phase,splitting time and recombining time on phase sensitivity are carefully studied.In addition,we demonstrate a dynamical phase transition in the system.Around the criticality,a small cavity light field variation can arouse a strong response of the atomic condensate,which can serve as a new resource for enhanced sensing.This work provides a robust protocol for cavity-enhanced metrol-ogy-ogy.

nonlinear atom interferometerspin-1 Bose-Einstein condensatespin-mixing dynamicsquantum Fisher informationparameter estimation

Renfei Zheng、Jieli Qin、Bing Chen、Xingdong Zhao、Lu Zhou

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School of Physics,Hefei University of Technology,Hefei 230009,China

State Key Laboratory of Precision Spectroscopy,Department of Physics,School of Physics and Electronic Science,East China Normal University,Shanghai 200241,China

School of Physics and Materials Science,Guangzhou University,230 Wai Huan Xi Road,Guangzhou Higher Education Mega Center,Guangzhou 510006,China

Department of Physics,Henan Normal University,Xinxiang 453007,China

Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaKey Scientific Research Project of Colleges and Universities in Henan Province

120741201190406323A140001

2024

10.1007/s11467-023-1372-5

物理学前沿
高等教育出版社

物理学前沿

CSTPCD
影响因子：0.816
ISSN：2095-0462
年,卷(期)：2024.19(3)
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