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Journal of the Physical Society of Japan

Phase Diagram and Dynamics of Spin–Orbit Coupling Bose–Josephson Junction in Optical Cavity

Jing-Zhi Pan, Zheng-Fang Chen, Jian Feng, Huiliang Ye, Yi‐Cai Zhang, Chaofei Liu

Published Jun 3, 2021• 0 citations
Publisher

Abstract

We use phase diagrams to study the mean-field dynamics of a spin–orbit coupled Bose–Josephson junction loaded in an optical cavity. We find that the spin Bose Josephson junction has four more combinations of 0- and π-phase motion modes than the bare junction. The spin–orbit coupling strength, the spin–weak atoms interaction energy, the cavity field drive and the cavity field detuning can increase the number of stable points of the Bose–Josephson junction energy. While the increase in cavity field dissipation would decrease the number of stable points of the energy. The increase in the number of 0- and π-phase motion modes will change the motion trajectory of atoms in the junction from a normal order to a disorder. This work indicates that quantum measurement and quantum simulation can be improved by controlling the dynamical quantities of spin atoms in a cavity.

DOI
10.7566/jpsj.90.074602

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