Xu Minghui, Tieri D A, Fine E C, Thompson James K, Holland M J
JILA, National Institute of Standards and Technology and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA.
Phys Rev Lett. 2014 Oct 10;113(15):154101. doi: 10.1103/PhysRevLett.113.154101. Epub 2014 Oct 6.
We propose a system for observing the correlated phase dynamics of two mesoscopic ensembles of atoms through their collective coupling to an optical cavity. We find a dynamical quantum phase transition induced by pump noise and cavity output coupling. The spectral properties of the superradiant light emitted from the cavity show that at a critical pump rate the system undergoes a transition from the behavior of two independent oscillators to the phase locking that is the signature of quantum synchronization.
我们提出了一种通过两个介观原子系综与光学腔的集体耦合来观测其相关相位动力学的系统。我们发现了由泵浦噪声和腔输出耦合引起的动态量子相变。从腔中发射出的超辐射光的光谱特性表明，在临界泵浦速率下，系统从两个独立振荡器的行为转变为作为量子同步标志的锁相状态。
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