Tuesday, August 6, 2013

1308.1011 (Ken-ichiro Yoshino et al.)

Maintenance-free Operation of WDM Quantum Key Distribution System
through a Field Fiber over 30 Days

Ken-ichiro Yoshino, Takao Ochi, Mikio Fujiwara, Masahide Sasaki, Akio Tajima
Maintenance-free wavelength-division-multiplexing quantum key distribution for 30 days was achieved through a 22-km field fiber. Using polarization-independent interferometers and stabilization techniques, we attained a quantum bit error rate as low as 1.70% and a key rate as high as 229.8 kbps, making the record of total secure key of 595.6 Gbits accumulated over an uninterrupted operation period.
View original: http://arxiv.org/abs/1308.1011

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