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Q: Fachverband Quantenoptik und Photonik

Q 47: Quantum Information (Quantum Communication and Quantum Repeater)

Q 47.6: Vortrag

Donnerstag, 17. März 2022, 11:45–12:00, Q-H12

Retrieval of single photons from solid-state quantum transducers — •Tom Schmit¹, Luigi Giannelli^1,2,3, 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.