Photon pair generation in hydrogenated amorphous silicon microring resonators

Lizzy Hemsley; Damien Bonneau; Jason Pelc; Ray Beasusoleil; Jeremy O'Brien; Mark Thompson

doi:10.1038/srep38908

Photon pair generation in hydrogenated amorphous silicon microring resonators

Lizzy Hemsley, Damien Bonneau, Jason Pelc, Ray Beasusoleil, Jeremy O'Brien, Mark Thompson

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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Abstract

We generate photon pairs in a-Si:H microrings using a CW pump, and find the Kerr coefficient of a-Si:H to be 3.73 ± 0.25 × 10⁻¹⁷m²/W. By measuring the Q factor with coupled power we find that the loss in the a-Si:H micro-rings scales linearly with power, and therefore cannot originate from two photon absorption. Theoretically comparing a-Si:H and c-Si micro-ring pair sources, we show that the high Kerr coefficient of this sample of a-Si:H is best utilized for microrings with Q factors below 10³, but that for higher Q factor devices the photon pair rate is greatly suppressed due to the first order loss.

Original language	English
Article number	28908
Number of pages	8
Journal	Scientific Reports
Volume	6
DOIs	https://doi.org/10.1038/srep38908
Publication status	Published - 20 Dec 2016

Research Groups and Themes

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Keywords

Microresonators
Nonlinear optics
Quantum optics

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Quantum Optics for Integrated Photonic Technologies
Rarity, J. G. (Principal Investigator)
16/06/14 → 15/06/19
Project: Research
Programme Grant: Engineering Photonic Quantum Technologies.
Rarity, J. G. (Principal Investigator), O'Brien, J. L. (Principal Investigator), Thompson, M. G. (Co-Investigator), Erven, C. (Co-Investigator), Sahin, D. (Co-Investigator), Marshall, G. D. (Researcher), Barreto, J. (Co-Investigator), Jiang, P. (Collaborator), McCutcheon, W. D. (Researcher), Silverstone, J. W. (Researcher), Sinclair, G. F. (Researcher), Kling, L. (Engineer), Banerjee, A. (Researcher), Wang, J. (Researcher), Santagati, R. (Researcher), Borghi, M. (Researcher), Woodland, E. M. (Manager), Mawdsley, H. C. M. (Administrator) & Faruque, I. I. (Researcher)
16/06/14 → 15/06/19
Project: Research, Parent
Fabricating a photonic quantum computer.
O'Brien, J. L. (Principal Investigator)
1/04/13 → 31/03/18
Project: Research

Cite this

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title = "Photon pair generation in hydrogenated amorphous silicon microring resonators",

abstract = "We generate photon pairs in a-Si:H microrings using a CW pump, and find the Kerr coefficient of a-Si:H to be 3.73 ± 0.25 × 10−17m2/W. By measuring the Q factor with coupled power we find that the loss in the a-Si:H micro-rings scales linearly with power, and therefore cannot originate from two photon absorption. Theoretically comparing a-Si:H and c-Si micro-ring pair sources, we show that the high Kerr coefficient of this sample of a-Si:H is best utilized for microrings with Q factors below 103, but that for higher Q factor devices the photon pair rate is greatly suppressed due to the first order loss.",

keywords = "Microresonators, Nonlinear optics, Quantum optics",

author = "Lizzy Hemsley and Damien Bonneau and Jason Pelc and Ray Beasusoleil and Jeremy O'Brien and Mark Thompson",

year = "2016",

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journal = "Scientific Reports",

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T1 - Photon pair generation in hydrogenated amorphous silicon microring resonators

AU - Hemsley, Lizzy

AU - Bonneau, Damien

AU - Pelc, Jason

AU - Beasusoleil, Ray

AU - O'Brien, Jeremy

AU - Thompson, Mark

PY - 2016/12/20

Y1 - 2016/12/20

N2 - We generate photon pairs in a-Si:H microrings using a CW pump, and find the Kerr coefficient of a-Si:H to be 3.73 ± 0.25 × 10−17m2/W. By measuring the Q factor with coupled power we find that the loss in the a-Si:H micro-rings scales linearly with power, and therefore cannot originate from two photon absorption. Theoretically comparing a-Si:H and c-Si micro-ring pair sources, we show that the high Kerr coefficient of this sample of a-Si:H is best utilized for microrings with Q factors below 103, but that for higher Q factor devices the photon pair rate is greatly suppressed due to the first order loss.

AB - We generate photon pairs in a-Si:H microrings using a CW pump, and find the Kerr coefficient of a-Si:H to be 3.73 ± 0.25 × 10−17m2/W. By measuring the Q factor with coupled power we find that the loss in the a-Si:H micro-rings scales linearly with power, and therefore cannot originate from two photon absorption. Theoretically comparing a-Si:H and c-Si micro-ring pair sources, we show that the high Kerr coefficient of this sample of a-Si:H is best utilized for microrings with Q factors below 103, but that for higher Q factor devices the photon pair rate is greatly suppressed due to the first order loss.

KW - Microresonators

KW - Nonlinear optics

KW - Quantum optics

U2 - 10.1038/srep38908

DO - 10.1038/srep38908

M3 - Article (Academic Journal)

C2 - 27996014

SN - 2045-2322

VL - 6

JO - Scientific Reports

JF - Scientific Reports

M1 - 28908

ER -

Photon pair generation in hydrogenated amorphous silicon microring resonators

Abstract

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Projects

Quantum Optics for Integrated Photonic Technologies

Programme Grant: Engineering Photonic Quantum Technologies.

Fabricating a photonic quantum computer.

Cite this