首页|Multiple-quantum-coherence dynamics of spin-1 Bose-Einstein condensate during quantum phase transitions

Multiple-quantum-coherence dynamics of spin-1 Bose-Einstein condensate during quantum phase transitions

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Multiple quantum coherences are often employed to describe quantum many-body dynamics in nuclear spin systems and recently,to characterize quantum phase transitions in trapped ions.Here we investigate the multiple-quantum-coherence dynamics of a spin-1 Bose-Einstein condensate.By adjusting the quadratic Zeeman shift,the condensate exhibits three quantum phases.Our numerical results show that the spectrum of multiple quantum coherence does indeed catch the quantum critical points.More importantly,with only a few low-order multiple quantum coherences,the spin-1 condensate exhibits rich signals of the many-body dynamics,beyond conventional observables.The experimental implementation of such multiple quantum coherence protocol is also discussed.

Bose-Einstein condensatespin-mixing dynamicsquantum phase transitionsmultiple-quantum-coherencesquantum entanglement

Fulin Deng、Peng Xu、Su Yi、Wenxian Zhang

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Key Laboratory of Artificial Micro-and Nano-structures of Ministry of Education,School of Physics and Technology,Wuhan University,Wuhan,Hubei 430072,China

School of Physics,Zhengzhou University,Zhengzhou 450001,China

CAS Key Laboratory of Theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China

CAS Center for Excellence in Topological Quantum Computation & School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China

Wuhan Institute of Quantum Technology,Wuhan,Hubei 430206,China

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国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金Innovation Program for Quantum Science and Technology

U1930201122743319183610112135018122044282021ZD0302100

2024

10.1088/1572-9494/ad0fd9

理论物理通讯(英文版)
中国科学院理论物理研究所 中国物理学会

理论物理通讯(英文版)

CSTPCD
影响因子：0.333
ISSN：0253-6102
年,卷(期)：2024.76(1)
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