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Q: Fachverband Quantenoptik und Photonik
Q 57: Quantum Information (Quantum Repeater)
Q 57.5: Vortrag
Freitag, 13. März 2020, 12:15–12:30, e001
Space-borne quantum memories for quantum communication and fundamental physics: prospects and challenges — •Mustafa Gündoğan1, Dennis Rätzel1, Janik Wolters2, Daniel Oi3, and Markus Krutzik1,4 — 1Institut für Physik, Humboldt-Universität zu Berlin, 12489 Berlin, Germany — 2Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Institute of Optical Sensor Systems, 12489 Berlin, Germany — 3SUPA Department of Physics, University of Strathclyde, John Anderson Building, Glasgow, G4 0NG, UK — 4Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, 12489 Berlin, Germany
Storing quantum information in material systems, i.e. in quantum memories (QM), is a key requirement for quantum information tasks in which probabilistic events have to be synchronized. Among the first applications of QMs is to extend the distance over which a quantum entangled state could be shared as nodes in a quantum repeater. In this work we compare performances of space-based quantum communication architectures without and with the help of QMs and quantify advantages that are brought by QMs.
Another potential use of space-based QMs is to store quantum information in curved space-times for extended period of times. In this context, we discuss novel experiments that would be enabled by QMs to probe general relativistic proper time in quantum mechanics.
This work is supported by the German Space Agency DLR with funds provided by the Federal Ministry of Economics and Technology (BMWi) under grant number 50WM1958.