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Q: Fachverband Quantenoptik und Photonik

Q 11: QED and Cavity QED

Q 11.7: Vortrag

Montag, 10. März 2025, 18:30–18:45, HS Botanik

Global pseudomode representation of cavity QED — •Lucas Weitzel, Andreas Buchleitner, and Dominik Lentrodt — Albert-Ludwigs Universität Freiburg

We construct an analytical and non-perturbative model for open cavities using discrete leaky modes -- the so-called pseudomodes -- by ``reverse-engineering" the parameters in the model from the exact, position-resolved spectral density within the cavity. Furthermore, the approach generalizes the standard pseudomodes by incorporating an explicit mode expansion for the cavity electric field. The latter feature ultimately allows for a global -- that is, at every position within the cavity -- description of the dynamics of an emitter and extends the application of pseudomodes to more complex targets such as condensed matter or extended atomic systems and even to very leaky open cavities.

Keywords: Cavity QED; Open quantum systems; Quantum optics