Advances in space quantum communications

IET Quantum Communication

article

Jasminder S. Sidhu¹  Siddarth K. Joshi²  Mustafa Gündoğan³  Thomas Brougham¹  David Lowndes²  Luca Mazzarella⁴  Markus Krutzik³  Sonali Mohapatra¹  Daniele Dequal⁶  Giuseppe Vallone⁷  Paolo Villoresi⁷  Alexander Ling⁹  Thomas Jennewein^1,11  Makan Mohageg⁴  John G. Rarity²  Ivette Fuentes^1,13  Stefano Pirandola^1,14  Daniel K. L. Oi¹ 

[1] SUPA Department of Physics, University of Strathclyde;Quantum Engineering Technology Labs, H. H. Wills Physics Laboratory & Department of Electrical and Electronic Engineering, University of Bristol;Institüt für Physik, Humboldt-Universität zu Berlin;Jet Propulsion Laboratory, California Institute of Technology;Craft Prospect Ltd.;Scientific Research Unit;Dipartimento di Ingegneria dell’Informazione, Università degli Studi di Padova;Dipartimento di Fisica e Astronomia, Università degli Studi di Padova;Centre for Quantum Technologies, National University of Singapore;Department of Physics, National University of Singapore;Institute for Quantum Computing, University of Waterloo;Department of Physics and Astronomy, University of Waterloo;School of Physics and Astronomy, University of Southampton;Department of Computer Science, University of York

关键词: quantum communication;    Internet;    quantum cryptography;    quantum computing;   

DOI  :  10.1049/qtc2.12015

学科分类：环境科学（综合）

来源: Wiley

【 摘 要 】

Concerted efforts are underway to establish an infrastructure for a global quantum Internet to realise a spectrum of quantum technologies. This will enable more precise sensors, secure communications, and faster data processing. Quantum communications are a front-runner with quantum networks already implemented in several metropolitan areas. A number of recent proposals have modelled the use of space segments to overcome range limitations of purely terrestrial networks. Rapid progress in the design of quantum devices have enabled their deployment in space for in-orbit demonstrations. We review developments in this emerging area of space-based quantum technologies and provide a roadmap of key milestones towards a complete, global quantum networked landscape. Small satellites hold increasing promise to provide a cost effective coverage required to realise the quantum Internet. The state of art in small satellite missions is reviewed and the most current in-field demonstrations of quantum cryptography are collated. The important challenges in space quantum technologies that must be overcome and recent efforts to mitigate their effects are summarised. A perspective on future developments that would improve the performance of space quantum communications is included. The authors conclude with a discussion on fundamental physics experiments that could take advantage of a global, space-based quantum network.

【 授权许可】

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