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arXiv · 1401.7470

Entangled photons from on-chip slow light

Hiroki Takesue·Nobuyuki Matsuda·Eiichi Kuramochi·Masaya Notomi
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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-$μ$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.

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Hiroki Takesue, Nobuyuki Matsuda, Eiichi Kuramochi, Masaya Notomi. 2014-01-29. Entangled photons from on-chip slow light. https://doi.org/10.1038/srep03913

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