Erlangen 2022 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 47: Quantum Information (Quantum Communication and Quantum Repeater)
Q 47.6: Talk
Thursday, March 17, 2022, 11:45–12:00, Q-H12
Retrieval of single photons from solid-state quantum transducers — •Tom Schmit1, Luigi Giannelli1,2,3, Anders Søndberg Sørensen4, and Giovanna Morigi1 — 1Theoretical Physics, Department of Physics, Saarland University, 66123 Saarbrücken, Germany — 2Dipartimento di Fisica e Astronomia "Ettore Majorana", Università di Catania, Via S. Sofia 64, 95123 Catania, Italy — 3INFN, Sezione Catania, 95123 Catania, Italy — 4Center for Hybrid Quantum Networks, Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 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 analyze theoretically 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 mismatch 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 frequencies to microwave-to-optical frequencies. We apply this result to analyze the photon spectrum and the retrieval probability as a function of the optical depth for microwave-to-optical transduction.