Quantum trajectory phase transitions in the micromaser.

Quantum trajectory phase transitions in the micromaser.
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微脉泽中的量子轨迹相变。

DOI:
10.1103/physreve.84.021115
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发表时间:
2011
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
通讯作者:
Garrahan JP
Garrahan JP
中科院分区:
--
文献类型:
--
作者:
Garrahan JP

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本文用量子跃迁轨道热力学方法研究了单原子脉泽或微脉泽的动力学。我们发现微脉塞的动力学表现出多个时空相变,即,量子跳跃轨迹的集合中的相变。这种丰富的动力学相结构变得明显时,轨迹被分类的动力学观测,量化的动态活动,如原子的数量,改变了状态,而穿越腔。时空跃迁可以是一阶的,也可以是连续的,不仅受微脉塞的标准参数控制,还受非平衡“计数”场的控制。我们讨论了动力学相位行为如何与微脉泽的定态性质有关。
We study the dynamics of the single-atom maser, or micromaser, by means of the recently introduced method of thermodynamics of quantum jump trajectories. We find that the dynamics of the micromaser displays multiplespace-timephase transitions, i.e., phase transitions in ensembles of quantum jump trajectories. This rich dynamical phase structure becomes apparent when trajectories are classified by dynamical observables that quantifydynamical activity, such as the number of atoms that have changed state while traversing the cavity. The space-time transitions can be either first order or continuous, and are controlled not just by standard parameters of the micromaser but also by nonequilibrium “counting” fields. We discuss how the dynamical phase behavior relates to the better known stationary-state properties of the micromaser.
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