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Proceedings Paper

Quantum key distribution beyond the repeaterless rate-loss limit (Conference Presentation)
Author(s): Marco Lucamarini; Mirko Pittaluga; Mariella Minder; George L. Roberts; James F. Dynes; Zhiliang L. Yuan; Andrew J. Shields

Paper Abstract

Quantum key distribution (QKD) allows users to generate shared encryption keys that are guaranteed to be theoretically secure by the laws of quantum mechanics. Most implementations use light pulses that are attenuated by the propagation medium. This leads to a fundamental rate-distance limit in QKD that was thought to be impossible to overcome with current technology. The recent proposal of "Twin-Field QKD", however, changed this belief and showed how to overcome this limit and perform long-distance QKD with present-day technology. In my talk I will review the most significant theoretical and experimental results in this emerging and rapidly growing research area.

Paper Details

Date Published: 10 March 2020
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Proc. SPIE 11295, Advanced Optical Techniques for Quantum Information, Sensing, and Metrology, 1129507 (10 March 2020); doi: 10.1117/12.2551063
Show Author Affiliations
Marco Lucamarini, Toshiba Research Europe Ltd. (United Kingdom)
Mirko Pittaluga, Toshiba Research Europe Ltd. (United Kingdom)
Mariella Minder, Toshiba Research Europe Ltd. (United Kingdom)
George L. Roberts, Toshiba Research Europe Ltd. (United Kingdom)
James F. Dynes, Toshiba Research Europe Ltd. (United Kingdom)
Zhiliang L. Yuan, Toshiba Research Europe Ltd. (United Kingdom)
Andrew J. Shields, Toshiba Research Europe Ltd. (United Kingdom)


Published in SPIE Proceedings Vol. 11295:
Advanced Optical Techniques for Quantum Information, Sensing, and Metrology
Philip R. Hemmer; Alan L. Migdall; Zameer Ul Hasan, Editor(s)

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