Efficient long distance quantum communication
Sreraman Muralidharan,Linshu Li,Jungsang Kim,Norbert Lütkenhaus,Mikhail D. Lukin,Liang Jiang +5 more
TLDR
In this article, the authors present a comparison of three generations of quantum repeaters by evaluating the cost of both temporal and physical resources, and identify the optimized quantum repeater architecture for a given set of experimental parameters.Abstract:
Despite the tremendous progress of quantum cryptography, efficient quantum communication over long distances (>1000km) remains an outstanding challenge due to fiber attenuation and operation errors accumulated over the entire communication distance. Quantum repeaters, as a promising approach, can overcome both photon loss and operation errors, and hence significantly speedup the communication rate. Depending on the methods used to correct loss and operation errors, all the proposed QR schemes can be classified into three categories (generations). Here we present the first systematic comparison of three generations of quantum repeaters by evaluating the cost of both temporal and physical resources, and identify the optimized quantum repeater architecture for a given set of experimental parameters. Our work provides a roadmap for the experimental realizations of highly efficient quantum networks over transcontinental distances.read more
Citations
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Quantum Computing in the NISQ era and beyond
TL;DR: Noisy Intermediate-Scale Quantum (NISQ) technology will be available in the near future as mentioned in this paper, which will be useful tools for exploring many-body quantum physics, and may have other useful applications.
Journal ArticleDOI
Quantum Computing in the NISQ era and beyond
TL;DR: Noisy Intermediate-Scale Quantum (NISQ) technology will be available in the near future, and the 100-qubit quantum computer will not change the world right away - but it should be regarded as a significant step toward the more powerful quantum technologies of the future.
Journal ArticleDOI
Advances in quantum cryptography
Stefano Pirandola,Ulrik L. Andersen,Leonardo Banchi,Mario Berta,Darius Bunandar,Roger Colbeck,Dirk Englund,Tobias Gehring,Cosmo Lupo,Carlo Ottaviani,Jason Pereira,Mohsen Razavi,Jesni Shamsul Shaari,Marco Tomamichel,Vladyslav C. Usenko,Giuseppe Vallone,Paolo Villoresi,Petros Wallden +17 more
TL;DR: This review begins by reviewing protocols of quantum key distribution based on discrete variable systems, and considers aspects of device independence, satellite challenges, and high rate protocols based on continuous variable systems.
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Material platforms for spin-based photonic quantum technologies
TL;DR: In this paper, the authors highlight the progress in three leading material platforms: diamond, silicon carbide and atomically thin semiconductors, with a focus on applications in quantum networks.
Journal ArticleDOI
Photonic quantum information processing: a review
TL;DR: A comprehensive review of the state of the art in this active field, with a due balance between theoretical, experimental and technological results, can be found in this article, where significant achievements are presented in tables or in schematic figures, in order to convey a global perspective of the several horizons that fall under the name of photonic quantum information.
References
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Book
Quantum Computation and Quantum Information
TL;DR: In this article, the quantum Fourier transform and its application in quantum information theory is discussed, and distance measures for quantum information are defined. And quantum error-correction and entropy and information are discussed.