Yoshino Ken-ichiro, Ochi Takao, Fujiwara Mikio, Sasaki Masahide, Tajima Akio
Opt Express. 2013 Dec 16;21(25):31395-401. doi: 10.1364/OE.21.031395.
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 an estimated secure key rate as high as 112.4 kbps for a record-breaking 291.3 Gbits of estimated secure keys accumulated over an uninterrupted operation period.
通过一根22公里的现场光纤实现了30天免维护的波分复用量子密钥分发。利用偏振无关干涉仪和稳定技术，我们实现了低至1.70%的量子误码率，以及在连续运行期间累计产生高达291.3 Gbit的估计安全密钥的情况下，估计安全密钥率高达112.4 kbps。
