研究目的
Investigating the effect of a periodic modulation on parity-time symmetry in a non-Hermitian Rabi model with balanced gain or loss.
研究成果
The study concludes that parity-time symmetry in a non-Hermitian Rabi model can be broken and restored by tuning the amplitude and frequency of periodic modulation. Under multiple-photon resonance conditions, exact Floquet solutions exist at certain exceptional points, and the number of these points shows a universal parametric dependence on the gain or loss strength.
研究不足
The study is theoretical and does not involve experimental validation. The high-frequency approximation is invalid in the parameter region of interest, limiting the applicability of certain analytical methods.
1：Experimental Design and Method Selection:
The study employs a non-Hermitian Rabi model with balanced gain or loss, subject to a periodic modulation. The methodology involves analytical and numerical approaches to investigate the model's behavior under multiple-photon resonance conditions.
2：Sample Selection and Data Sources:
The study does not involve physical samples but focuses on theoretical models and numerical simulations.
3：List of Experimental Equipment and Materials:
Not applicable as the study is theoretical.
4：Experimental Procedures and Operational Workflow:
The study involves setting up the non-Hermitian Rabi model with specific parameters, applying periodic modulation, and analyzing the system's response through exact Floquet solutions and numerical simulations.
5：Data Analysis Methods:
The analysis includes deriving exact analytical results for the position of exceptional points and numerical simulations to explore the universal relation between the number of EPs and the gain or loss strength.
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