The entanglement of quantum systems can produce a variety of nonclassical effects that have practical applications in quantum information science. One example of this is nonlocal dispersion cancellation, in which the effects of dispersion on one photon can be canceled out by the dispersion experienced by a second photon at a distant location. In this paper, we extend the analysis of nonlocal dispersion cancellation to three or more photons. We find that energy-time entanglement of three or more photons can lead to a complete or partial cancellation of dispersion depending on the experimental conditions. These results may be useful in implementing quantum key distribution in networks with three or more nodes.

中文翻译：

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消除三个或更多光子的非局部色散

量子系统的纠缠会产生各种非经典效应，这些效应在量子信息科学中具有实际应用。这样的一个例子是非局部色散抵消，其中，一个光子上的色散影响可以被第二光子在远处所经历的色散抵消。在本文中，我们将非局部色散抵消的分析扩展到三个或更多光子。我们发现，取决于实验条件，三个或更多个光子的能量-时间纠缠可导致色散的完全或部分消除。这些结果可能有助于在具有三个或更多节点的网络中实施量子密钥分发。