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

Journal Article (Academic article)

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 qubitʼs dynamical map. Tools of open quantum systems theory allow us then to show 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.

Full Text

Duke Authors

Cited Authors

  • Fang, Y-LL; Ciccarello, F; Baranger, HU

Published Date

  • April 16, 2018

Published In

Volume / Issue

  • 20 /


  • 043035

Start / End Page

  • 043035 - 043035

Published By


  • 17

International Standard Serial Number (ISSN)

  • 1367-2630

Digital Object Identifier (DOI)

  • 10.1088/1367-2630/aaba5d