Superfluid-superradiant mixed phase of the interacting degenerate Fermi gas in an optical cavity

• 来源期刊: 中国科学:物理学 力学 天文学（英文版）
• 年，卷（期）: 2018,（12）
• 页码范围: 74-83
• 页数: 10页
• 语种: 英文

摘要

We investigate the ground-state properties of an attractively interacting degenerate Fermi gas coupling with a high-finesse optical cavity.We predict a new mixed phase with both the superfluid and superradiant properties for the intermediate fermion-fermion interaction and fermion-photon coupling strengths.Moreover,in this mixed phase a relatively large ratio of the scaled polarization to the dimensionless mean-field gap,which is in contrast to that in the conventional superfluid regime can be obtained.We also figure out rich phase diagrams depending crucially on the atomic resonant frequency (effective Zeeman field) and address briefly the experimental detection of our predicted quantum phases.