论文标题
Qed电路中的Cherenkov阈值跨越量子直接原因
Quantum direct cause across the Cherenkov threshold in circuit QED
论文作者
论文摘要
我们研究了由超导电路模拟的Qubit加速度触发的Cherenkov辐射。通过分析辐射概率，我们确认了Cherenkov速度阈值的存在，这意味着在这种情况下，可以模拟上亮置Qubit运动。立即出现一个问题：这项运动与因果关系原则兼容吗？为了解决这个问题，我们基于最近开发的时间量子相关性，伪密度矩阵和时间量子转向的概念对模拟系统进行因果关系测试。结果表明，即使系统受到弱耦合方案的限制，单模近似也会崩溃。
We investigate the Cherenkov radiation triggered by qubit acceleration simulated by superconducting circuit. By analyzing the radiation probability, we confirm the existence of Cherenkov speed threshold, implying that simulating superluminal qubit motion is possible for such a scenario. A question immediately arises: Is such motion compatible with the causality principle? To address the question, we perform a causality test on the simulating system based on the recently developed notion of temporal quantum correlations, pseudo-density matrix and temporal quantum steering. The results suggest that single-mode approximation breaks down even when the system is restricted in weak coupling regime.
