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Opt Express. 2011 Jan 17;19(2):1470-83. doi: 10.1364/OE.19.001470.

Frequency-bin entangled comb of photon pairs from a Silicon-on-Insulator micro-resonator.

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Optical Technology Division, National Institute of Standards and Technology, Gaithersburg, MD 20899-8441, USA.


We present a quantum-mechanical theory to describe narrowband photon-pair generation via four-wave mixing in a Silicon-on-Insulator (SOI) micro-resonator. We also provide design principles for efficient photon-pair generation in an SOI micro-resonator through extensive numerical simulations. Microring cavities are shown to have a much wider dispersion-compensated frequency range than straight cavities. A microring with an inner radius of 8 μm can output an entangled photon comb of 21 pairwise-correlated peaks (42 comb lines) spanning from 1.3 μm to 1.8 μm. Such on-chip quantum photonic devices offer a path toward future integrated quantum photonics and quantum integrated circuits.

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