Real-time gigahertz free-space quantum key distribution within an emulated satellite overpass

被引：12

作者：

Roger, Thomas ^{[1
]}

Singh, Ravinder ^{[1
]}

Perumangatt, Chithrabhanu ^{[1
]}

Marangon, Davide G. ^{[1
]}

Sanzaro, Mirko ^{[1
]}

Smith, Peter R. ^{[1
]}

Woodward, Robert I. ^{[1
]}

Shields, Andrew J. ^{[1
]}

机构：

[1] Toshiba Europe Ltd, 208 Cambridge Sci Pk, Cambridge, England

来源：

SCIENCE ADVANCES | 2023年 / 9卷 / 48期

基金：

“创新英国”项目;

关键词：

ATOMIC ENSEMBLES; FIELD-TEST; COMMUNICATION; GENERATION; REPEATERS;

D O I：

10.1126/sciadv.adj5873

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Satellite quantum key distribution (SatQKD) intermediated by a trusted satellite in a low-Earth orbit to ground stations along the satellite's path allows remote users to connect securely. To establish a secure connection, a SatQKD session must be conducted to each user over a dynamically changing free-space link, all within just a few hundred seconds. Because of the short time and large losses under which the QKD protocol will be implemented, it has not yet been possible to form a complete key by transmitting all the relevant information required within a single overpass of the satellite. Here, we demonstrate a real-time QKD system that is capable of forming a 4.58-megabit secure key between two nodes within an emulated satellite overpass. We anticipate that our system will set the stage for practical implementations of intercontinental quantum secure communications that can operate over large networks of nodes and enable the secure transmission of data globally.

引用

页数：10

共 51 条

[1] Ultra-fast quantum randomness generation by accelerated phase diffusion in a pulsed laser diode [J].

Abellan, C. ;

Amaya, W. ;

Jofre, M. ;

Curty, M. ;

Acin, A. ;

Capmany, J. ;

Pruneri, V. ;

Mitchell, M. W. .

OPTICS EXPRESS, 2014, 22 (02) :1645-1654

[2]

Acosta VM, 2021, Arxiv, DOI arXiv:2111.06747

[3] Predicting the visibility of LEO sate [J].

Ali, I ;

Al-Dhahir, N ;

Hershey, JE .

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 1999, 35 (04) :1183-1190

[4] Practical Side-Channel Attack on Free-Space QKD Systems With Misaligned Sources and Countermeasures [J].

Arteaga-Diaz, Pablo ;

Cano, Daniel ;

Fernandez, Veronica .

IEEE ACCESS, 2022, 10 :82697-82705

[5] Progress in satellite quantum key distribution [J].

Bedington, Robert ;

Arrazola, Juan Miguel ;

Ling, Alexander .

NPJ QUANTUM INFORMATION, 2017, 3

[6] Experimental demonstration of memory-enhanced quantum communication [J].

Bhaskar, M. K. ;

Riedinger, R. ;

Machielse, B. ;

Levonian, D. S. ;

Nguyen, C. T. ;

Knall, E. N. ;

Park, H. ;

Englund, D. ;

Loncar, M. ;

Sukachev, D. D. ;

Lukin, M. D. .

NATURE, 2020, 580 (7801) :60-+

[7] Feasibility of satellite quantum key distribution [J].

Bonato, C. ;

Tomaello, A. ;

Da Deppo, V. ;

Naletto, G. ;

Villoresi, P. .

NEW JOURNAL OF PHYSICS, 2009, 11

[8] A comprehensive design and performance analysis of low Earth orbit satellite quantum communication [J].

Bourgoin, J-P ;

Meyer-Scott, E. ;

Higgins, B. L. ;

Helou, B. ;

Erven, C. ;

Huebel, H. ;

Kumar, B. ;

Hudson, D. ;

D'Souza, I. ;

Girard, R. ;

Laflamme, R. ;

Jennewein, T. .

NEW JOURNAL OF PHYSICS, 2013, 15

[9]

Brassard G., 1994, Advances in Cryptology - EUROCRYPT '93. Workshop on the Theory and Application of Cryptographic Techniques Proceedings, P410

[10] Quantum repeaters:: The role of imperfect local operations in quantum communication [J].

Briegel, HJ ;

Dür, W ;

Cirac, JI ;

Zoller, P .

PHYSICAL REVIEW LETTERS, 1998, 81 (26) :5932-5935

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