Open AccessPosted Content
Chip-based Quantum Key Distribution
Philip Sibson,Chris Erven,Mark Godfrey,Shigehito Miki,Taro Yamashita,Mikio Fujiwara,Masahide Sasaki,Hirotaka Terai,Michael G. Tanner,Chandra M. Natarajan,Robert H. Hadfield,Jeremy L. O'Brien,Mark G. Thompson +12 more
TLDR
This work reports low error rate, GHz clocked QKD operation of an indium phosphide transmitter chip and a silicon oxynitride receiver chip—monolithically integrated devices using components and manufacturing processes from the telecommunications industry for large-scale deployment of quantum key distribution into future telecommunications networks.Abstract:
Improvement in secure transmission of information is an urgent practical need for governments, corporations and individuals. Quantum key distribution (QKD) promises security based on the laws of physics and has rapidly grown from proof-of-concept to robust demonstrations and even deployment of commercial systems. Despite these advances, QKD has not been widely adopted, and practical large-scale deployment will likely require integrated chip-based devices for improved performance, miniaturisation and enhanced functionality, fully integrated into classical communication networks. Here we report low error rate, GHz clocked QKD operation of an InP transmitter chip and a SiO$_x$N$_y$ receiver chip --- monolithically integrated devices that use state-of-the-art components and manufacturing processes from the telecom industry. We use the reconfigurability of these devices to demonstrate three important QKD protocols --- BB84, Coherent One Way (COW) and Differential Phase Shift (DPS) --- with performance comparable to state-of-the-art. These devices, when combined with integrated single photon detectors, satisfy the requirements at each of the levels of future QKD networks --- from point-of-use through to backbone --- and open the way to operation in existing and emerging classical communication networks.read more
Citations
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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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Secure quantum key distribution with realistic devices
TL;DR: This review gives both sides of the story, with the current best theory of quantum security, and an extensive survey of what makes quantum cryptosystem safe in practice.
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Integrated Photonic Quantum Technologies
TL;DR: This Review summarizes the advances in integrated photonic quantum technologies and its demonstrated applications, including quantum communications, simulations of quantum chemical and physical systems, sampling algorithms, and linear-optic quantum information processing.
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A survey on quantum computing technology
TL;DR: The most recent results of quantum computation technology are reviewed and the open problems of the field are addressed.
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Silicon Quantum Photonics
TL;DR: In this paper, the authors provide context to the development of quantum optics in silicon and identify the challenges that must be faced and their potential solutions for silicon quantum photonics to make quantum technology a reality.
References
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Journal ArticleDOI
The security of practical quantum key distribution
Valerio Scarani,Helle Bechmann-Pasquinucci,Nicolas J. Cerf,Miloslav Dušek,Norbert Lütkenhaus,Momtchil Peev +5 more
TL;DR: Essential theoretical tools that have been developed to assess the security of the main experimental platforms are presented (discrete- variable, continuous-variable, and distributed-phase-reference protocols).
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Quantum cryptography using any two nonorthogonal states
TL;DR: It is shown that in principle any two nonorthogonal quantum states suffice, and a practical interferometric realization using low-intensity coherent light pulses is described.
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Measurement-Device-Independent Quantum Key Distribution
TL;DR: The results show that long-distance quantum cryptography over say 200 km will remain secure even with seriously flawed detectors, and the key generation rate is many orders of magnitude higher than that based on full device independent QKD.
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Single-photon detectors for optical quantum information applications
TL;DR: In this paper, a review highlights the recent progress which has been made towards improved single-photon detector technologies and the impact these developments will have on quantum optics and quantum information science.
Journal ArticleDOI
Secure quantum key distribution
TL;DR: An overview is given of the state-of-the-art research into secure communication based on quantum cryptography, together with its assumptions, strengths and weaknesses.