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Non-Markovian Dynamics of a Qubit Due to Single-Photon Scattering in a Waveguide

Non-Markovian Dynamics of a Qubit Due to Single-Photon Scattering in a Waveguide

来源:Arxiv_logoArxiv
英文摘要

We investigate the open dynamics of a qubit due to scattering of a single photon in an infinite or semi-infinite waveguide. Through an exact solution of the time-dependent multi-photon scattering problem, we find the qubit's dynamical map. Tools of open quantum systems theory allow us then to discuss the general features of this map, find the corresponding non-Linbladian master equation, and assess in a rigorous way its non-Markovian nature. The qubit dynamics has distinctive features that, in particular, do not occur in emission processes. Two fundamental sources of non-Markovianity are present: the finite width of the photon wavepacket and the time delay for propagation between the qubit and the end of the semi-infinite waveguide.

Harold U. Baranger、Yao-Lung L. Fang、Francesco Ciccarello

10.1088/1367-2630/aaba5d

物理学

Harold U. Baranger,Yao-Lung L. Fang,Francesco Ciccarello.Non-Markovian Dynamics of a Qubit Due to Single-Photon Scattering in a Waveguide[EB/OL].(2017-07-19)[2025-07-01].https://arxiv.org/abs/1707.05946.点此复制

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