Photonic currents in driven and dissipative resonator lattices
Photonic currents in driven and dissipative resonator lattices
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DOI：
10.1103/physreva.94.013809
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发表时间：
2016-01
影响因子：
2.9
通讯作者：
T. Mertz;I. Vasić;M. Hartmann;W. Hofstetter
中科院分区：
文献类型：
--
作者：
T. Mertz;I. Vasić;M. Hartmann;W. Hofstetter
由外部激光驱动的耦合光子腔阵列代表了一种高度可控的装置来探索光子传输。在这篇文章中，我们讨论了由工程驱动和耗散引入的呈现光子电流的(准)稳态。我们研究了两种方法：在第一种方法中，光子电流是由于外加激光的相位差而产生的；在第二种方法中，光子被局部注入，电流在晶格上重新分布时发展。在平均场框架内考虑了相互作用的影响。在第一种方法中，我们发现电流表现出关于驱动频率的共振行为。弱相互作用使共振频率向更高的值移动，而在我们的平均场处理中的强相互作用区域，这种影响源于单个驱动腔的多光子共振。对于第二种方法，我们证明了可以通过在系统中加入少量具有较强耗散率的空穴来控制整个晶格电流。这些空穴充当了光子流的汇，它们的影响在量子Zeno动力学开始时达到最大。
Arrays of coupled photonic cavities driven by external lasers represent a highly controllable setup to explore photonic transport. In this paper we address (quasi)-steady states of this system that exhibit photonic currents introduced by engineering driving and dissipation. We investigate two approaches: in the first one, photonic currents arise as a consequence of a phase difference of applied lasers and in the second one, photons are injected locally and currents develop as they redistribute over the lattice. Effects of interactions are taken into account within a mean-field framework. In the first approach, we find that the current exhibits a resonant behavior with respect to the driving frequency. Weak interactions shift the resonant frequency toward higher values, while in the strongly interacting regime in our mean-field treatment the effect stems from multiphotonic resonances of a single driven cavity. For the second approach, we show that the overall lattice current can be controlled by incorporating few cavities with stronger dissipation rates into the system. These cavities serve as sinks for photonic currents and their effect is maximal at the onset of quantum Zeno dynamics.