Long-distance entanglement-based quantum key distribution experiment using practical detectors | Zendy

Hiroki Takesue | Zendy; K. Harada | Zendy; Kiyoshi Tamaki | Zendy; Hiroshi Fukuda | Zendy; Tai Tsuchizawa | Zendy; Toshifumi Watanabe | Zendy; Koji Yamada | Zendy; Sei-ichi Itabashi | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Long-distance entanglement-based quantum key distribution experiment using practical detectors

Author(s) -

Hiroki Takesue,

K. Harada,

Kiyoshi Tamaki,

Hiroshi Fukuda,

Tai Tsuchizawa,

Toshifumi Watanabe,

Koji Yamada,

Sei-ichi Itabashi

Publication year - 2010

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.18.016777

Subject(s) - quantum key distribution , avalanche photodiode , quantum entanglement , detector , optics , photon , physics , photon entanglement , quantum cryptography , key (lock) , quantum channel , computer science , key generation , qubit , quantum , quantum information , cryptography , quantum mechanics , algorithm , computer security

We report an entanglement-based quantum key distribution experiment that we performed over 100 km of optical fiber using a practical source and detectors. We used a silicon-based photon-pair source that generated high-purity time-bin entangled photons, and high-speed single photon detectors based on InGaAs/InP avalanche photodiodes with the sinusoidal gating technique. To calculate the secure key rate, we employed a security proof that validated the use of practical detectors. As a result, we confirmed the successful generation of sifted keys over 100 km of optical fiber with a key rate of 4.8 bit/s and an error rate of 9.1%, with which we can distill secure keys with a key rate of 0.15 bit/s.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research