6 papers · 1 filter
Vacuum Rabi Splitting and Quantum Fisher Information of a Non-Hermitian Qubit in a Single-Mode Cavity
Yi-Cheng Wang, Jiong Li, Li-Wei Duan +1
A natural extension of the non-Hermitian qubit is to place it in a single-mode cavity. This setup corresponds to the quantum Rabi model (QRM) with a purely imaginary bias on the qu…
-symmetric two-photon quantum Rabi models
Yi-Cheng Wang, Jiong Li, Qing-Hu Chen
We investigate two non-Hermitian two-photon quantum Rabi models (tpQRM) that exhibit symmetry: the biased tpQRM (btpQRM), in which the qubit bias is purely imaginary…
Critical Spectrum and Quantum Criticality in the Two-Photon Rabi-Stark Model
Jiong Li, Qing-Hu Chen
We investigate the spectral properties and quantum criticality of the two-photon Rabi-Stark model. Using the exact solution of this model, we rigorously derive a condition for comp…
-symmetric quantum Rabi model: Solutions and exceptional points
Jiong Li, Yi-Cheng Wang, Li-Wei Duan +1
The -symmetric non-Hermitian quantum Rabi model (QRM) with imaginary coupling is solved using the Bogoliubov operators approach. A transcendental function responsible…
Critical spectrum of the anisotropic two-photon quantum Rabi model
Jiong Li, Daniel Braak, Qing-Hu Chen
The anisotropic two-photon quantum Rabi model is studied using the Bogoliubov operator approach. The doubly degenerate exceptional states are identified through analytical methods.…
Analytical Study of the Non-Hermitian Semiclassical Rabi Model
Yibo Liu, Liwei Duan, Qing-Hu Chen
The symmetric semiclassical Rabi model explores the fundamental interaction between a two-level atom and a classical field, revealing novel phenomena in open systems…