Efficient Heralding of Passively Spatial-Multiplexed O-Band Photons for Noise-Tolerant Quantum Key Distribution
Mao Tong Liu, Han Chuen Lim · 2014
We demonstrate an O-band passively spatial-multiplexed heralded photon source with 74.5% heralding efficiency for noise-tolerant quantum key distribution. Relation between QBER and noise-degraded g(2)(0) of heralded photons transmitted over a 10-km-long fiber is observed.