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Registered OPTICAL PHASE MODULATION METHOD AND APPARATUS FOR QUANTUM KEY DISTRIBUTION
- Inventors
- Cho Jeong-Sik, Noh Tae-Gon, Seok-Beom Cho, Kim Kwangjoon, Kang Sae-Kyoung
- Application No.
- 12899128 (2010.10.06)
- Publication No.
- 20110150226 (2011.06.23)
- Registration No.
- 8477947 (2013.07.02)
- Country
- UNITED STATES
- Project Code
- 09MB2400, Development of key technologies for commercial quantum cryptography communication system, Noh Tae-Gon
- Abstract
- Provided is an optical phase modulating method and apparatus for a quantum key distribution. When an optical phase modulator is arranged outside an optical interferometer, a configuration of the optical interferometer may be simplified, and an extension of an optical path caused by the optical phase modulator, instability and an insertion loss increased in the optical interferometer, and the like, may be overcome. An output feature may be improved by adjusting an applied voltage of the optical phase modulator arranged outside the optical interferometer.