Slow-light enhanced correlated photon pair generation in a silicon photonic crystal waveguide

C. Xiong; Christelle Monat; Alex S. Clark; Christian Grillet; Graham D. Marshall; M. J. Steel; Juntao Li; Liam O’Faolain; Thomas F. Krauss; John G. Rarity; Benjamin J. Eggleton

doi:10.1364/OL.36.003413

Optics Letters
Vol. 36,
Issue 17,
pp. 3413-3415
(2011)
•https://doi.org/10.1364/OL.36.003413

Slow-light enhanced correlated photon pair generation in a silicon photonic crystal waveguide

C. Xiong, Christelle Monat, Alex S. Clark, Christian Grillet, Graham D. Marshall, M. J. Steel, Juntao Li, Liam O’Faolain, Thomas F. Krauss, John G. Rarity, and Benjamin J. Eggleton

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C. Xiong, Christelle Monat, Alex S. Clark, Christian Grillet, Graham D. Marshall, M. J. Steel, Juntao Li, Liam O’Faolain, Thomas F. Krauss, John G. Rarity, and Benjamin J. Eggleton, "Slow-light enhanced correlated photon pair generation in a silicon photonic crystal waveguide," Opt. Lett. 36, 3413-3415 (2011)

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Abstract

We report the generation of correlated photon pairs in the telecom C-band at room temperature from a dispersion-engineered silicon photonic crystal waveguide. The spontaneous four-wave mixing process producing the photon pairs is enhanced by slow-light propagation enabling an active device length of less than $100 μm$ . With a coincidence to accidental ratio of 12.8 at a pair generation rate of 0.006 per pulse, this ultracompact photon pair source paves the way toward scalable quantum information processing realized on-chip.

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	Estimated $γ [/ W / m]$	Peak Power [W]	Device Length [m]	Measured Pairs/Pulse	$Pairs / s / W^{2} / m^{2} / nm$	CAR
Ref. [12]	100	0.24	$9.11 \times 10^{- 3}$	0.05	$2.1 \times 10^{15}$	25
Ref. [13]	300	0.05	$1.15 \times 10^{- 2}$	0.02	$3.4 \times 10^{15}$	50
Our work	4000	0.23	$9.6 \times 10^{- 5}$	0.006	$1.8 \times 10^{18}$	13

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