2019/02/28 by Farid Samara, Anthony Martin, Claire Autebert +4 · 1 citation
Physics and Astronomy · #physics.optics #quant-ph
paper · pdf · doi:10.1364/oe.27.019309
arxiv created 2019/03/22 · arxiv updated 2019/09/17
Integrated photonics is increasing in importance for compact, robust, and scalable enabling quantum technologies. This is particularly interesting for developing quantum communication networks, where resources need to be deployed in the field. We exploit photonic chip-based \rm Si3 N4 ring microresonators for the generation of photon pairs with low-loss, high-noise suppression and coincidence rates of 80× 103 s-1. A simple photonic noise characterisation technique is presented that distinguishes linear and nonlinear contributions that is useful for system design and optimisation. We then demonstrate an all-fibre 750 MHz clock-rate sequential Time-Bin entanglement scheme with raw interference visibilities > 98 %.