Ultra-low power generation of twin photons in a compact silicon ring resonator

Abstract

We demonstrate efficient generation of correlated photon pairs by spontaneous four wave mixing in a 5 μm radius silicon ring resonator in the telecom band around 1550 nm. By optically pumping our device with a 200 μW continuous wave laser, we obtain a pair generation rate of 0.2 MHz and demonstrate photon time correlations with a coincidence-to-accidental ratio as high as 250. The results are in good agreement with theoretical predictions and show the potential of silicon micro-ring resonators as room temperature sources for integrated quantum optics applications.

8 pages, 3 figures

References in corpus (3)

• Heralded Generation of Ultrafast Single Photons in Pure Quantum States
• Entanglement generation using silicon wire waveguide
• Characterizing heralded single-photon sources with imperfect measurement devices

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