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SKM 2023 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 3: Focus Session: Progress in Hybrid Phononic Quantum Technologies I

HL 3.6: Talk

Monday, March 27, 2023, 12:00–12:15, POT 151

Storage and retrieval of telecom single photons from a semiconductor quantum dot in a rubidium ORCA memory — •Lukas Wagner1, Sarah Thomas2, Cornelius Nawrath1, Simone Luca Portalupi1, Patrick Ledingham3, Ian Walmsley2, and Peter Michler11Institut für Halbleiteroptik und Funktionelle Grenzflächen (IHFG), Center for Integrated Quantum Science and Technology (IQST) and SCoPE, University of Stuttgart, Allmandring 3, 70569 Stuttgart, Germany — 2Faculty of Natural Sciences, Department of Physics, Imperial College London, Imperial College Rd, South Kensington Campus, London SW7 2AZ, United Kingdom — 3Department of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, United Kingdom

Photons are highly attractive as carriers of information thanks to their propagation at the speed of light and their low interaction with matter. Furthermore, various implementations of photonic quantum technologies will strongly benefit from the possibility of storing quantum information. Indeed, quantum memories would allow synchronizing the arrival time of multiple photons. Semiconductor quantum dots (QDs) are highly attractive as sources of quantum light. Atomic vapors are known as a very powerful platform to realize on-demand storage and retrieval of light. For these reasons a hybrid quantum system combining these two elements was for long sought after. Here, we will report on our progress to interface single photons from an In(Ga)As QD emitting at telecom wavelength with a rubidium off-resonance cascaded absorption (ORCA) quantum memory.

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