Interactions of quantum systems with pulses of quantized radiation: From a cascaded master equation to a traveling mode perspective
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- PhysRevA.107.013706
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The interaction of a propagating pulse of quantum radiation with a localized quantum system can be described by a cascaded master equation with a distinct initially populated input and a finally populated output field mode [Kiilerich and Mølmer, Phys. Rev. Lett. 123, 123604 (2019)]. By transformation to an appropriate interaction picture, we break the cascaded nature of the master equation and recover an effective time-dependent interaction with a lossless single mode and a supplementary lossy mode. The former closely represents the traveling pulse, while the latter constitutes a non-Markovian component in the exchange of quanta between the scatterer and the quantized field. The transformed master equation offers important insights into the system dynamics, and it permits numerically efficient solutions.
Originalsprog | Engelsk |
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Artikelnummer | 013706 |
Tidsskrift | Physical Review A |
Vol/bind | 107 |
Udgave nummer | 1 |
Antal sider | 8 |
ISSN | 2469-9926 |
DOI | |
Status | Udgivet - 2023 |
Bibliografisk note
Funding Information:
The authors acknowledge discussions with F. Yang and M. Middelhede Lund and support from the European Union's Horizon 2020 research and innovation program under Grants No. 820391 (SQUARE) and No. 754513 (Marie Sklodowska-Curie program), and from the Danish National Research Foundation through the Center of Excellence for Complex Quantum Systems (Grant Agreement No. DNRF156).
Publisher Copyright:
© 2023 American Physical Society.
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