Abstract
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.
基金项目
国家自然科学基金(U1930201)
国家自然科学基金(12274331)
国家自然科学基金(91836101)
国家自然科学基金(12135018)
国家自然科学基金(12204428)
Innovation Program for Quantum Science and Technology(2021ZD0302100)
NETL
NSTL
万方数据