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

• URL: http://arxiv.org/abs/2111.02816v2
• Date: Tue, 23 Aug 2022 10:20:34 GMT
• Title: Heisenberg treatment of multiphoton pulses in waveguide QED with time-delayed feedback
• Authors: Kisa Barkemeyer, Andreas Knorr, and Alexander Carmele
• Abstract summary: We propose a projection onto a complete set of states in the Hilbert space to decompose the multi-time correlations into single-time matrix elements. We consider the paradigmatic example of a two-level system that couples to a semi-infinite waveguide and interacts with quantum light pulses.
• Score: 62.997667081978825
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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