Entangled photons from on-chip slow light

Abstract

We report the first entanglement generation experiment using an on-chip slow light device. With highly efficient spontaneous four-wave mixing enhanced by the slow light effect in a coupled resonator optical waveguide based on a silicon photonic crystal, we generated 1.5-$\mu$m-band high-dimensional time-bin entangled photon pairs. We undertook two-photon interference experiments and observed the coincidence fringes with visibilities $>74\%$. The present result enables us to realize an on-chip entanglement source with a very small footprint, which is an essential function for quantum information processing based on integrated quantum photonics.

5 pages, 3 figures. First draft

References in corpus (2)

• Silica-on-Silicon Waveguide Quantum Circuits
• Slow light enhanced correlated photon pair generation in photonic-crystal coupled-resonator optical waveguides

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