SKM 2023 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 58: Poster: Superconductivity II
TT 58.20: Poster
Donnerstag, 30. März 2023, 15:00–18:00, P2/OG3
Towards room temperature microwave quantum teleportation — •Wun Kwan Yam1,2, Michael Renger1,2, Simon Gandorfer1,2, 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 — 2Physik-Department, TUM, 85748 Garching, Germany — 3Rohde & Schwarz GmbH & Co. KG, 81671 Munich, Germany — 4Munich Center for Quantum Science and Technology, 80799 Munich, Germany
Microwave quantum communication enables efficient and unconditionally secure exchange of quantum states. This paves the way towards distributed quantum computing and open-air quantum key distribution. One of the relevant quantum communication protocols is quantum teleportation. In the microwave regime, quantum teleportation has been successfully demonstrated by using superconducting Josephson circuits in a cryogenic setup. To investigate the limits of microwave quantum teleportation under more realistic application scenarios, we study the influence of thermal noise and losses in microwave communication channels. We show that the teleportation protocol is robust against noise in the feedforward channel and analyze experimental limits of distributing entanglement via thermal channels. Furthermore, we describe the experimental implementation of microwave quantum teleportation with the room temperature feedforward and consider microwave quantum teleportation in the open air.