Photon Propagation in a Discrete Fiber Network: An Interplay of Coherence and Losses
Photon Propagation in a Discrete Fiber Network: An Interplay of Coherence and Losses
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DOI：
10.1103/physrevlett.107.233902
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发表时间：
2011-12-02
影响因子：
8.6
通讯作者：
Peschel, Ulf
中科院分区：
文献类型：
--
作者：
Regensburger, Alois;Bersch, Christoph;Peschel, Ulf
我们研究了在离散环境中逐步演化的光子系统中的光传播。它类似于光子波导阵列或量子漫步的离散时间版本。通过在我们的实验装置中引入受控光子损失，我们观察到了意想不到的效果，如亚指数能量衰减和复杂分形图案的形成。这表明，在经典和量子光学实验中，线性损耗、离散性和能量梯度的相互作用导致了真正新的相干现象。此外，退相干的影响进行了研究。
We study light propagation in a photonic system that shows stepwise evolution in a discretized environment. It resembles a discrete-time version of photonic waveguide arrays or quantum walks. By introducing controlled photon losses to our experimental setup, we observe unexpected effects like subexponential energy decay and formation of complex fractal patterns. This demonstrates that the interplay of linear losses, discreteness and energy gradients leads to genuinely new coherent phenomena in classical and quantum optical experiments. Moreover, the influence of decoherence is investigated.