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Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)

Spatial multiplexing of monolithic Silicon heralded single photon sources

Matthew J. Collins, Chunle Xiong, Trung D. Vo, Alex S. Clark, Isabella H. Rey, Jie He, Shayan Shahnia, Christopher Paul Reardon, Michael J. Steel, Thomas F. Krauss, Benjamin J. Eggleton

Published May 1, 2013• 1 citation
Publisher

Abstract

Here we present the first experimental demonstration of spatial multiplexing of two integrated heralded single photon sources so as to enhance the heralded photon rate for a given single waveguide output power.
DOI
10.1109/cleoe-iqec.2013.6801675

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We demonstrate integrated spatial multiplexing of heralded single photons generated from a single 96 μm long silicon photonic crystal waveguide in a bidirectional pump configuration. By using a low-loss fiber-coupled opto-ceramic switch, the multiplexing technique enhances the brightness of the single photon source by 51.2±4.0% while maintaining the coincidence-to-accidental ratio. Compared with the demonstration of multiplexing two individual sources, the bidirectional pump scheme represents a twofold reduction in the footprint of nonlinear devices for future large-scale integration of on-chip single photon sources. The 51.2±4.0% gain will make any quantum operation requiring n photons 1.5(n) times faster.