Space-borne quantum memories for global quantum communication

Gündoğan, Mustafa and Sidhu, Jasminder S. and Henderson, Victoria and Mazzarella, Luca and Wolters, Janik and Oi, Daniel K.L. and Krutzik, Markus (2020) Space-borne quantum memories for global quantum communication. Preprint / Working Paper. arXiv.org, Ithaca, N.Y..

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Abstract

Global scale quantum communication links will form the backbone of the quantum internet. However, exponential loss in optical fibres precludes any realistic application beyond few hundred kilometres. Quantum repeaters and space-based systems offer to overcome this limitation. Here, we analyse the use of quantum memory (QM)-equipped satellites for quantum communication focussing on global range repeaters and Measurement-Device-Independent (MDI) QKD. We demonstrate that satellites equipped with QMs provide three orders of magnitude faster entanglement distribution rates than existing protocols where QMs are located in ground stations. We analyse how entangle- ment distribution performance depends on memory characteristics, determine benchmarks to assess performance of different tasks, and propose various architectures for light-matter interfaces. Our work provides a practical roadmap to realise unconditionally secure quantum communications over global distances with current technologies.

  • Item type:Monograph(Preprint / Working Paper)
    ID code:74453
    Dates:
    Date
    Event
    18 June 2020
    Published
    Notes:This paper has not been published: Gündoğan, M., Sidhu, J.S., Henderson, V. et al. Proposal for space-borne quantum memories for global quantum networking. npj Quantum Inf 7, 128 (2021). https://doi.org/10.1038/s41534-021-00460-9 Date of publication 18th August 2021
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:29 Oct 2020 16:53
    Last modified:22 Apr 2024 01:02
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/74453
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