Enhancing quantum phase synchronization through squeezed-reservoir engineering

• URL: http://arxiv.org/abs/2408.09850v1
• Date: Mon, 19 Aug 2024 09:52:13 GMT
• Title: Enhancing quantum phase synchronization through squeezed-reservoir engineering
• Authors: Xing Xiao, Tian-Xiang Lu, Wo-Jun Zhong, Yan-Ling Li,
• Abstract summary: We investigate the enhancement of quantum phase synchronization in a two-level system (TLS) coupled to a squeezed reservoir. We demonstrate that the squeezed reservoir imparts its squeezing characteristics to the TLS, leading to a more localized and pronounced synchronization.
• Score: 1.7811840395202345
• License: http://creativecommons.org/licenses/by/4.0/
• 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.

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