Berlin 2018 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 79: Superconductivity: Superconducting Electronics - Circuit QED
TT 79.9: Vortrag
Donnerstag, 15. März 2018, 11:45–12:00, H 2053
Remote state preparation with propagating quantum microwaves — •Stefan Pogorzalek1,2, Kirill G. Fedorov1,2, Behdad Ghaffari1,2, Minxing Xu1,2, Peter Eder1,2,3, Michael Fischer1,2,3, Edwar Xie1,2,3, Achim Marx1, Frank Deppe1,2,3, and Rudolf Gross1,2,3 — 1Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany — 2Physik-Department, TU München, 85748 Garching, Germany — 3Nanosystems Initiative Munich (NIM), 80799 München, Germany
Propagating two-mode squeezed (TMS) microwave states enable applications of quantum communication and sensing with superconducting quantum circuits [1]. In our work, we perform experimental studies of TMS microwave states, which are generated by the means of flux-driven Josephson parametric amplifiers and linear circuit elements [2, 3]. We use the TMS states for the demonstration of a basic quantum communication protocol, namely, remote state preparation (RSP) in which the sender has knowledge of a to-be-teleported quantum state. In particular, we experimentally demonstrate the feasibility of the continuous variable RSP protocol with analog feed-forward by remotely preparing single-mode squeezed states.
The authors acknowledge support from DFG through FE 1564/1-1.
[1] R. Di Candia et al., EPJ Quantum Technol. 2, 25 (2015).
[2] K. G. Fedorov et al., Phys. Rev. Lett. 117, 020502 (2016).
[3] K. G. Fedorov et al., arXiv:1703.05138 (2017).