We predict the preservation of temporal indistinguishability of photons propagating through helical coupled-resonator optical waveguides (H-CROWs). H-CROWs exhibit a pseudospin-momentum locked dispersion, which we show suppresses onsite disorder-induced backscattering and group velocity fluctuations. We simulate numerically the propagation of two-photon wavepackets, demonstrating that they exhibit almost perfect Hong-Ou-Mandel dip visibility and then can preserve their quantum coherence even in the presence of moderate disorder, in contrast to regular CROWs which are highly sensitive to disorder. As indistinguishability is the most fundamental resource of quantum information processing, H-CROWs may find applications for the implementation of robust optical links and delay lines in the emerging quantum photonic communication and computational platforms.

中文翻译：

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通过螺旋耦合谐振腔波导的无序保护量子态传输

我们预测通过螺旋耦合谐振器光波导 (H-CROW) 传播的光子的时间不可区分性的保留。H-CROWs 表现出赝自旋动量锁定色散，我们表明它抑制了现场无序引起的反向散射和群速度波动。我们对双光子波包的传播进行了数值模拟，证明它们表现出几乎完美的 Hong-Ou-Mandel 倾角能见度，然后即使在存在中度无序的情况下也能保持其量子相干性，这与对无序高度敏感的常规 CROW 形成对比. 由于不可区分性是量子信息处理的最基本资源，