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arXiv · 2111.02816

Heisenberg treatment of multiphoton pulses in waveguide QED with time-delayed feedback

Kisa Barkemeyer·Andreas Knorr·Alexander Carmele
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Abstract

The dynamics of waveguide-QED systems involving coherent time-delayed feedback give rise to a hierarchy of multi-time correlations within the Heisenberg picture due to the induced non-Markovianity. We propose to perform a projection onto a complete set of states in the Hilbert space to decompose the multi-time correlations into single-time matrix elements. To illustrate the procedure, we consider the paradigmatic example of a two-level system that couples to a semi-infinite waveguide and interacts with quantum light pulses. Our approach complements the range of available methods as it allows calculating the dynamics under the inclusion of additional dissipation channels in a numerically exact and efficient manner for multiphoton pulses of arbitrary shape where memory requirements are known in advance.

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Kisa Barkemeyer, Andreas Knorr, Alexander Carmele. 2021-11-04. Heisenberg treatment of multiphoton pulses in waveguide QED with time-delayed feedback. https://doi.org/10.1103/physreva.106.023708

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