EXPERIMENTAL DEMONSTRATION OF THE PERFORMANCE OF QUANTUM KEY DISTRIBUTION SYSTEM AT 1550 nm
You-Zhen Gui, Xiaofan Mo, Zheng‐Fu Han, Guang‐Can Guo · International Journal of Quantum Information · 2005
We analyze some of the critical factors that confine the transmission length for a quantum key distribution system under a certain Quantum Bit Error Rate (QBER). Emphasis was placed on the relationship between transmission length and QBER. Relationships between the minimum QBER and transmission length in theory for ideal M–Z interferometers and for the real case in theory according to the parameters of our system are given. The relationship between them as obtained by experiment was also given. The results showed that our system is very close to the performance of an ideal experimental system.