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We analyze the propagation of quantum states in the presence of weak disorder. In particular, we investigate the reliable transmittance of quantum states, as potential carriers of quantum information, through… Click to show full abstract
We analyze the propagation of quantum states in the presence of weak disorder. In particular, we investigate the reliable transmittance of quantum states, as potential carriers of quantum information, through disorder-perturbed waveguides. We quantify wave-packet distortion, backscattering, and disorder-induced dephasing, which all act detrimentally on transport, and identify the conditions for reliable transmission. Our analysis relies on a novel method to treat the nonequilibrium dynamics of ensemble-averaged quantum states, introducing coupled disorder channels.
Journal Title: Physical Review A
Year Published: 2017
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