SAMOP 2021 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 11: Quantum Information (joint session QI/Q)
Q 11.15: Poster
Mittwoch, 22. September 2021, 16:30–18:30, P
Retrieval of single photons from solid-state quantum transducers — •Tom Schmit1, Luigi Giannelli1,2,3, Anders S. Sørensen4, and Giovanna Morigi1 — 1Theoretical Physics, Department of Physics, Saarland University, 66123 Saarbr+cken, Germany — 2Dipartimento di Fisica e Astronomia "Ettore Majorana", Universit\a di Catania, Via S. Sofia 64, 95123 Catania, Italy — 3INFN, Sez. Catania, 95123 Catania, Italy — 4enter for Hybrid Quantum Networks (Hy-Q), Niels Bohr Institute,University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark
Quantum networks using photonic channels require control of the interactions between the photons, carrying the information, and the elements comprising the nodes. In this work, we theoretically analyse the spectral properties of an optical photon emitted by a solid-state quantum memory, which acts as a converter of a photon absorbed in another frequency range. We determine explicitly the expression connecting the stored and retrieved excitation taking into account possible mode and phase mismatching of the experimental setup. The expression we obtain describes the output field as a function of the input field for a transducer working over a wide range of frequencies, from optical-to-optical to microwave-to-optical. We apply this result to analyse the photon spectrum and the retrieval probability as a function of the optical depth for microwave-to-optical transduction. In the absence of losses, the efficiency of the solid-state quantum transducer is intrinsically determined by the capability of designing the retrieval process as the time-reversal of the storage dynamics.