条件光子探测诱导的两个解耦量子极限环振荡器的瞬时相位同步

Yuzuru Kato, H. Nakao
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引用次数: 5

摘要

我们证明了条件光子探测诱导两个解耦量子极限环振荡器之间的瞬时相位同步。我们考虑了两个没有相互耦合的量子范德波尔振荡器,每个振荡器都有一个额外的线性耦合槽,并通过分束器对两个槽的输出场进行了连续的光子计数测量。观察到两个解耦振荡器的同相相干性或反相相干性在光子探测后瞬间增加,然后在弱量子区逐渐下降,在强量子区迅速下降,直到下一次光子探测发生。在强量子状态下,量子纠缠也在光子探测后增加并迅速消失。在量子极限下,我们推导出了条件光子探测增加量子纠缠和相相干的解析上界。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Instantaneous phase synchronization of two decoupled quantum limit-cycle oscillators induced by conditional photon detection
We show that conditional photon detection induces instantaneous phase synchronization between two decoupled quantum limit-cycle oscillators. We consider two quantum van der Pol oscillators without mutual coupling, each with an additional linearly coupled bath, and perform continuous measurement of photon counting on the output fields of the two baths interacting through a beam splitter. It is observed that in-phase or anti-phase coherence of the two decoupled oscillators instantaneously increases after the photon detection and then decreases gradually in the weak quantum regime or quickly in the strong quantum regime until the next photon detection occurs. In the strong quantum regime, quantum entanglement also increases after the photon detection and quickly disappears. We derive the analytical upper bounds for the increases in the quantum entanglement and phase coherence by the conditional photon detection in the quantum limit.
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