Observation of collapse and revival of atomic four-wave mixing in Bose gases

Wu, Wei-Tao1,2; Duan, Zhi-Xin1,2; Yang, Sheng-Jun1,2,3

2024-06-11

10.1103/PhysRevA.109.063316

PHYSICAL REVIEW A   影响因子和分区

2469-9926

2469-9934

Atomic four-wave mixing (FWM) is an important nonlinear process in ultracold physics. Despite numerous works on atomic FWM, the phase coherence effect has not been extensively studied. Here, by preparing multiple spin-momentum modes with ultracold 87Rb atoms in a crossed dipole trap and applying an external magnetic field to regulate the atomic motions and interactions, we extensively investigate how the coherence fluctuation affects the atomic FWM process. We observe that the atomic motion and spin-exchange collision involve a periodic collapse and revival of the yield fraction of the atomic FWM. The oscillation period is mainly determined by the spin-exchange rate and thus the atomic scattering cross section. Our work demonstrates that atomic FWM can be used to probe the coherence and the atomic interactions, which should benefit various areas related to multicomponent atomic interactions and spin dynamics in the future.

SCI ; EI

英语

第一 ; 通讯

Key-Area Research and Development Program of Guangdong Province[2019ZT08X324] ; Guangdong Provincial Key Laboratory[2019B121203002]

Optics ; Physics

Optics ; Physics, Atomic, Molecular & Chemical

WOS:001245176500006

AMER PHYSICAL SOC

PHYSICS

Web of Science

1.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Sch Sci, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Guangdong Prov Key Lab Quantum Sci & Engn, Shenzhen 518055, Peoples R China
3.Int Quantum Acad, Shenzhen 518048, Peoples R China

Wu, Wei-Tao,Duan, Zhi-Xin,Yang, Sheng-Jun. Observation of collapse and revival of atomic four-wave mixing in Bose gases[J]. PHYSICAL REVIEW A,2024,109(6).

Wu, Wei-Tao,Duan, Zhi-Xin,&Yang, Sheng-Jun.(2024).Observation of collapse and revival of atomic four-wave mixing in Bose gases.PHYSICAL REVIEW A,109(6).

Wu, Wei-Tao,et al."Observation of collapse and revival of atomic four-wave mixing in Bose gases".PHYSICAL REVIEW A 109.6(2024).