181 citations · 1.1k across the 37 of their papers we have counts for
37 papers
Non-Hermiticity of an anomalous superradiant phase
Jun-Ling Wang, You-Qi Lu, Qing-Hu Chen +1
We counterintuitively present a Hermitian squeezing-Dicke model as a minimal setting for non-Hermitian physics in many-body light-matter systems. It enables the realization of a no…
Phase Transitions in the Anisotropic Dicke-Stark Model with -square terms
Xiang-You Chen, Yu-Yu Zhang, Qing-Hu Chen +1
The superradiant phase transition (SRPT) is forbidden in the standard isotropic Dicke model due to the so-called no-go theorem induced by A-square term. In the framework of the Dic…
Biorthogonal Dynamical Quantum Phase Transitions in Non-Hermitian Systems
Yecheng Jing, Jian-Jun Dong, Yu-Yu Zhang +1
By utilizing biorthogonal bases, we develop a comprehensive framework for studying biorthogonal dynamical quantum phase transitions in non-Hermitian systems. With the help of the p…
Quantum Rabi hexagonal ring in an artificial magnetic field
Lin-Jun Li, Li-Lu Feng, Jia-Hao Dai +1
We present exotic quantum phases in a quantum Rabi hexagonal ring, which is derived by an analytical solution. We find that an artificial magnetic field applied in the ring induces…
Relations between quantum metrology and criticality in general su(1, 1) systems
Rui Zhang, Wenkui Ding, Zhucheng Zhang +3
There is a prevalent effort to achieve quantum-enhanced metrology using criticality. However, the extent to which estimation precision is enhanced through criticality still needs f…
Chiral Quantum Phases and Tricriticality in a Dicke Triangle
Guo-Jing Chen, Diego Fallas Padilla, Tao Deng +2
The existence of quantum tricriticality and exotic phases are found in a Dicke triangle (TDT) where three cavities, each one containing an ensemble of three-level atoms, are connec…