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Detail
Registered POLARIZATION CODING QUANTUM CRYPTOGRAPHY SYSTEM
- Inventors
- Youn Chun Ju, Noh Tae-Gon
- Application No.
- 12499050 (2009.07.07)
- Publication No.
- 20100158252 (2010.06.24)
- Registration No.
- 8265279 (2012.09.11)
- Country
- UNITED STATES
- Project Code
- 08MB3600, Development of key technologies for commercial quantum cryptography communication system, Noh Tae-Gon
- Abstract
- Provided is a polarization coding quantum cryptography system. The quantum cryptography includes a light source, a quantum channel, an optical path selector, and a path-dependent polarization selector. The light source generates a signal light. The quantum channel is used as a path to transmit the signal light to a receiver unit. The optical path selector is disposed between the light source and the quantum channel to transmit the signal light to one of a plurality of propagation paths. The path-dependent polarization selector is disposed between the optical path selector and the quantum channel. Herein, the path-dependent polarization selector is configured to determine the polarization direction of the signal light according to the propagation path of the signal light.
- KSP Keywords
- Light sources, Optical path, Path-dependent, Polarization coding, Polarization direction, Polarization selector, Quantum cryptography, propagation path, quantum channel