1. Enhancing quantum phase synchronization through squeezed-reservoir engineering
- Author
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Xiao, Xing, Lu, Tian-Xiang, Zhong, Wo-Jun, and Li, Yan-Ling
- Subjects
Quantum Physics - Abstract
We investigate the enhancement of quantum phase synchronization in a two-level system (TLS) coupled to a squeezed reservoir. Our study reveals that the squeezed reservoir induces a stable limit cycle in the TLS, enhancing the quantum phase synchronization. We utilize the Husimi $Q$-function to describe the phase portrait of the driven TLS, and the $S$-function to quantitatively illustrate the effects of signal strength and detuning on phase synchronization. Remarkably, we demonstrate that the squeezed reservoir imparts its squeezing characteristics to the TLS, leading to a more localized and pronounced synchronization. Additionally, we observe typical features of the Arnold tongue in the synchronization regions. The experimental feasibility of our findings is discussed in the context of a circuit QED system, suggesting that squeezed-reservoir engineering is an effective approach for achieving quantum phase synchronization., Comment: 6 pages,4 figures, comments are welcome!
- Published
- 2024