Field test of quantum key distribution in the Tokyo QKD Network.

By Masahide Sasaki, M. Fujiwara, H. Ishizuka, W. Klaus, K. Wakui, Masahiro Takeoka, S. Miki, T. Yamashita, Z. Wang, A. Tanaka and 36 more. Optics Express, 2011

1,077 citations recorded by the source corpus.

A secure communication network with quantum key distribution in a metropolitan area is reported. Six different QKD systems are integrated into a mesh-type network. GHz-clocked QKD links enable us to demonstrate the world-first secure TV conferencing over a distance of 45km. The network includes a commercial QKD product for long-term stable operation, and application interface to secure mobile phones. Detection of an eavesdropper, rerouting into a secure path, and key relay via trusted nodes are demonstrated in this network.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/0014862203b30180743559fe378fc4dc007107eb

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Citations in the corpus

Superconducting nanowire single-photon detectors for quantum information (2020, neutral): “BB84 [62] 2007 0.7%/<10 cps 200 km/12.1 bps DPS [155] 2009 0.5%/78 cps 135 km/0.2 bps Decoy state [156] 2010 4%/1 cps 200 km/2.4 bps Decoy state [157] 2011 15%/100 cps 45 km/268.9 kbps Decoy state [158] 2012 2.5%/1 cps 260 km/1.85 bps DPS [159] 2014 46%/10 cps 200 km/0.02 bps MDI [160] 2015 >4”
Quantum random number generators (2016, background): “Quantum key distribution, on the other hand, has already become an established technology and the first commercial systems have been demonstrated in practical scenarios (Peev et al., 2009; Sasaki et al., 2011).”
A device-independent quantum key distribution system for distant users (2021, background): “00575v1 [ qu a n t - ph ] 1 O c t 2021 bound Eve’s information is the violation of a Bell inequality [1–5].”
Practical challenges in quantum key distribution (2016, neutral): “16,144 By setting up trusted nodes, for instance, every 50 km, to relay secrets, it is possible to achieve secure communication over arbitrarily long distances.”
Long-term performance of the SwissQuantum quantum key distribution network in a field environment (2011, methodology): “Thus, over the last few years, several QKD networks have been deployed and tested using trusted nodes and/or optical components [5–13].”
Advances in quantum cryptography (2019, neutral): “The DPS-QKD protocol has been tested in the Tokyo QKD network [227, 228].”
Metropolitan quantum key distribution with silicon photonics (2017, neutral): “Polarization grating couplers are used to convert between polarization-encoding in the input/output fibers and path-encoding within the PIC.”
Metrology of single-photon sources and detectors: a review (2014, background): “QKD(83,117) is arguably the first commercialized quantum optical technology and uses single photons to establish a secret key (cipher) between two parties over an open optical channel, such as free space(26) or an optical fiber.(118) If a hacker intercepts these photons, (s)he will disturb their enc”