动力学卡西米尔效应诱导的量子同步的鲁棒性
Robustness of Dynamical Casimir Effect-Induced Quantum Synchronization
- IFIBA UBA-CONICET（UBA-CONICET物理研究所）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本研究在电路量子电动力学架构中分析动力学卡西米尔效应诱导的量子同步的鲁棒性，发现其可在现有超导平台耗散率下保持，纯退相是主要限制因素，并指出强耗散下皮尔逊相关系数可能高估同步程度。
AI中文摘要：
在由两个超导量子比特耦合到一个共享的参量驱动腔构成的电路量子电动力学（cQED）架构中，分析了由动力学卡西米尔效应（DCE）诱导的量子同步的鲁棒性。本研究采用林德布拉德主方程方法，评估了各种退相干通道（包括光子损耗、弛豫、热激发和纯退相）对由此产生的同步动力学的影响。结果表明，在现有最先进的超导平台可实现的耗散率下，DCE诱导的同步仍然存在，从而证实了其实验可行性。在所研究的机制中，纯退相被确定为限制同步态保真度的主导因素。此外，研究表明，在强耗散区域，皮尔逊相关系数可能高估量子同步的程度，因为环境弛豫可以产生模拟同步行为的经典关联。这些发现确立了观察真正DCE诱导的量子同步所需的参数范围，并为未来的cQED实验提供了实用指南。
英文摘要：
The robustness of quantum synchronization induced by the dynamical Casimir effect (DCE) is analyzed within a circuit quantum electrodynamics (cQED) architecture consisting of two superconducting qubits coupled to a shared, parametrically driven cavity. Using a Lindblad master equation approach, this study evaluates the impact of various decoherence channels (including photon loss, relaxation, thermal excitation, and pure dephasing) on the resulting synchronization dynamics. The results demonstrate that DCE-induced synchronization persists under dissipation rates achievable in state-of-the-art superconducting platforms, confirming its experimental feasibility. Among the studied mechanisms, pure dephasing is identified as the dominant factor limiting the fidelity of the synchronized state. Furthermore, it is shown that in strongly dissipative regimes, the Pearson correlation coefficient may overestimate the degree of quantum synchronization, as environmental relaxation can generate classical correlations that mimic synchronized behavior. These findings establish the parameter regimes necessary for observing genuine DCE-induced quantum synchronization and provide practical guidelines for future cQED experiments.
