Hannover 2020 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 19: Quantum Optics II

Q 19.3: Talk

Tuesday, March 10, 2020, 14:45–15:00, f342

Chiral and correlated atoms driven by non-classical states of light — •Kevin Kleinbeck and Hans Peter Büchler — ITP 3, University of Stuttgart

Many quantum-optical systems consists of a bosonic field (e.g. photons) coupled to an atom-like subsystem, A full descriptions of the boson-atom system is in all but the most trivial cases a cumbersome endeavour, therefore typically just the atomic subsystem is considered, described by the quantum-optical master equation. The master equation enables to the calculations of atomic expectation values and, by the use of input-output relations, expectation values of the bosonic fields. For generic systems, however, correlation functions are inapproachable in this description.

We show, for systems with a chiral interaction (i.e., no backscattering of light) the quantum-optical master equation becomes an exact description, even for correlation functions. For the derivation of the master equation we use the Keldysh formulation, with which we also show how the scattering of non-classical states of light can be included in the master equation. As an example we consider the interaction of light with Rydberg superatoms.