Published March 16, 2022
| Version v1
Journal article
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Interaction of quantum systems with single pulses of quantized radiation
- 1. Center for Complex Quantum Systems, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
- 2. Numerical Competence Centre, Ørsted A/S, Kraftværksvej 53, Skærbæk, DK-7000 Fredericia, Denmark
- 3. Aarhus Institute of Advanced Studies, Aarhus University, Høegh-Guldbergs Gade 6B, DK-8000 Aarhus C, Denmark and Center for Complex Quantum Systems, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
Description
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 [Phys. Rev. Lett.123, 123604 (2019)]. By transformation to an
appropriate interaction picture, we identify the usual Jaynes-Cummings Hamiltonian between the
scatterer and a superposition of the initial and final mode, with a strength given by the travelling
pulse mode amplitude. The transformation also identifies a coupling of the scatterer with an orthogonal
combination of the two modes. The transformed master equation offers important insights
into the system dynamics and it permits numerically efficient solutions.
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