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arXiv 1902.00765cond-mat.mes-hallquant-ph
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量子体系中光子合成电场的动力学产生

Dynamical Generation of Synthetic Electric Fields for Photons in the Quantum Regime

Petr Zapletal, Andreas Nunnenkamp

摘要:

光力学提供了一种自然的方式来实现合成动态规范场,导致声子的合成电场,并因此,单向光传输。在这里,我们研究的量子动力学的合成规范场的最小设置的两个光学模式耦合的声子辅助隧道的声子模式进行自振荡。我们使用量子范德波尔振荡器作为最简单的动力学模型的机械自振子,使我们能够进行量子主方程模拟。我们确定了一个控制量子涨落强度的参数,使我们能够研究经典到量子的交叉。我们表明,合成电场的产生是强大的抗噪声,它导致单向传输的光子也在量子制度,虽然减少隔离比。我们的研究为基于光机阵列研究量子区的动态规范场开辟了道路。

英文摘要:

Optomechanics offers a natural way to implement synthetic dynamical gauge fields, leading to synthetic electric fields for phonons and, as a consequence, to unidirectional light transport. Here we investigate the quantum dynamics of synthetic gauge fields in the minimal setup of two optical modes coupled by phonon-assisted tunneling where the phonon mode is undergoing self-oscillations. We use the quantum van-der-Pol oscillator as the simplest dynamical model for a mechanical self-oscillator that allows us to perform quantum master equation simulations. We identify a single parameter, which controls the strength of quantum fluctuations, enabling us to investigate the classical-to-quantum crossover. We show that the generation of synthetic electric fields is robust against noise and that it leads to unidirectional transport of photons also in the quantum regime, albeit with a reduced isolation ratio. Our study opens the path for studying dynamical gauge fields in the quantum regime based on optomechanical arrays.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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