SKM 2023 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
TT: Fachverband Tiefe Temperaturen
TT 49: Quantum Coherence and Quantum Information Systems I
TT 49.1: Vortrag
Donnerstag, 30. März 2023, 11:30–11:45, HSZ 304
Inter-lab quantum microwave teleportation — •Michael Renger1,2, Simon Gandorfer1,2, Wun Kwan Yam1,2, Florian Fesquet1,2, Kedar Honasoge1,2, Fabian Kronowetter1,2,3, Yuki Nojiri1,2, Achim Marx1, Rudolf Gross1,2,4, and Kirill G. Fedorov1,2 — 1Walther-Meißner-Institut, BadW, 85748 Garching, Germany — 2TUM School of Natural Sciences, Technische Universität München, Garching, Germany — 3Rohde & Schwarz GmbH & Co. KG, 81671 Munich, Germany — 4Munich Center for Quantum Science and Technology, 80799 Munich, Germany
Quantum communication enables secure and efficient information exchange among different quantum nodes. To avoid inefficient frequency conversion for data transfer between superconducting quantum processors, we implement our quantum communication protocols with propagating quantum microwave states, directly in the microwave frequency regime which relies on ambient temperatures below 100 mK. To realize such a microwave quantum channel, we connect two dilution refrigerators over a distance of 6.5 m via a cryogenic link, operating at a base temperature of 52 mK. We employ our system to demonstrate inter-lab quantum teleportation of coherent microwave states, where we achieve the teleportation fidelity of 55%, exceeding the classical threshold. We discuss quantum advantage and security of this protocol and provide an outlook into the future of microwave quantum communication.