论文标题
通过条件光子检测引起的两个解耦量子循环振荡器的瞬时相同步
Instantaneous phase synchronization of two decoupled quantum limit-cycle oscillators induced by conditional photon detection
论文作者
论文摘要
我们显示有条件的光子检测会诱导两个脱钩的量子循环振荡器之间的瞬时相同步。我们考虑了两个量子范德振荡器，而无需相互耦合，每个振荡器都带有一个线性耦合的浴缸，并在两个通过梁分离器相互作用的两个浴场的输出场上进行光子计数的连续测量。可以观察到，两个解耦的振荡器的同相或反相相干性在光子检测后立即增加，然后在弱量子状态下逐渐减小，或在强量子状态下迅速下降，直到下一个光子检测发生。在强量子状态下，光子检测后也会增加量子纠缠并迅速消失。我们通过条件光子检测在量子极限中得出量子纠缠和相干性增加的分析上限。
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.
