Title :
Excess noise control in Gaussian-modulated coherent state quantum key distribution system
Author :
Qi, Bing ; Huang, Lei-Lei ; Chi, Yue-Meng ; Qian, Li ; Lo, Hoi-Kwong
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON
Abstract :
A novel polarization-frequency-multiplexing scheme is implemented to suppress noise in a fiber-based Gaussian-modulated coherent-state quantum key distribution system. The achievable secrete key rate is 0.30 bit/pulse with a 5 km-fiber and 0.05 bit/pulse with a 20 km-fiber.
Keywords :
frequency division multiplexing; interference suppression; light coherence; light polarisation; optical fibre communication; optical modulation; optical transmitters; quantum cryptography; quantum optics; telecommunication security; distance 20 km; distance 5 km; excess noise control; fiber-based Gaussian-modulated coherent state QKD; noise suppression; polarization-frequency-multiplexing scheme; quantum key distribution system; secrete key rate; Control systems; Fiber lasers; Gaussian distribution; Gaussian noise; Laser theory; Optical fiber polarization; Optical noise; Optical pulses; Phase modulation; Quantum computing; (270.0270) Quantum optics;
Conference_Titel :
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-859-9
