SKM 2023 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 66: Cryogenic Detectors
TT 66.6: Vortrag
Freitag, 31. März 2023, 11:00–11:15, HSZ 304
Superconducting 3D-cavity architecture for microwave single-photon detection — •Yuki Nojiri1,2, Kedar E. Honasoge1,2, Daniil Bazulin1,2, Florian Fesquet1,2, Maria-Teresa Handschuh1,2, Fabian Kronowetter1,4, Michael Renger1,2, Achim Marx1, Kirill G. Fedorov1,2, and Rudolf Gross1,2,3 — 1Walther-Meißner-Institute, Bavarian Academy of Sciences and Humanities, Germany — 2Technical University of Munich, TUM School of Natural Sciences, Physics Department, 85748 Garching, Germany — 3Munich Center for Quantum Science and Technology (MCQST), Schellingstr. 4, 80799 Munich, Germany — 4Rohde & Schwarz GmbH & Co. KG, Mühldorfstraße 15, 81671 München
Microwave single-photon detectors (SPDs) are essential quantum devices required in a large variety of quantum communication and quantum computation protocols. First microwave SPDs have been realized with the help of superconducting qubits and resonators. Here, we experimentally study an SPD design compatible with the superconducting 3D cavity architecture. We exploit the multimode nature of horseshoe aluminum cavities in combination with transmon qubits to experimentally realize efficient detection of single microwave photons. We analyze the performance of such devices and discuss possible ways to improve it.