Efficient heralding of passively spatial-multiplexed o-band photons for noise-tolerant quantum key distribution

• Main Authors: Liu, Mao Tong, Lim, Han Chuen
• Other Authors: School of Electrical and Electronic Engineering
• Format: Conference or Workshop Item
• Language: English
• Published: 2018
• Subjects: Quantum Communications; DRNTU::Engineering::Electrical and electronic engineering; Nonlinear Optics
• Online Access: https://hdl.handle.net/10356/87662; http://hdl.handle.net/10220/46792
• Institution: Nanyang Technological University

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.