Unidirectional frequency conversion in microring resonators for on-chip frequency-multiplexed single-photon sources

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@article{5b2cef08d6374b3aab11a3327e2e1c2b,
title = "Unidirectional frequency conversion in microring resonators for on-chip frequency-multiplexed single-photon sources",
abstract = "Microring resonators are attractive for low-power frequency conversion via Bragg-scattering fourwave-mixing due to their comb-like resonance spectrum, which allows resonant enhancement of all four waves while maintaining energy and momentum conservation. However, the symmetry of such mode structures limits the conversion efficiency to 50{\%} due to the equal probability of up- and down-conversion. Here, we demonstrate how two coupled microrings enable highly directional conversion between the spectral modes of one of the rings. An extinction between up- and down-conversion of more than 40 dB is experimentally observed. Based on this method, we propose a design for on-chip multiplexed single-photon sources that probabilistically generate photon pairs across many frequency modes of a ring resonator and subsequently convert them to a single frequency-thereby enabling quasi-deterministic photon emission. Our numerical analysis shows that once a photon is generated, it can be converted and emitted into a wave packet having a 90{\%} overlap with a Gaussian with 99{\%} efficiency for a ratio between intrinsic and coupling quality factors of 400.",
keywords = "Single photon source, Quantum information technology, Frequency conversion",
author = "Mikkel Heuck and Koefoed, {Jacob Gade} and Christensen, {Jesper Bjerge} and Yunhong Ding and Frandsen, {Lars Hagedorn} and Karsten Rottwitt and Oxenl{\o}we, {Leif Katsuo}",
year = "2019",
doi = "10.1088/1367-2630/ab09a7",
language = "English",
volume = "21",
journal = "New Journal of Physics",
issn = "1367-2630",
publisher = "IOP Publishing",
number = "3",

}

RIS

TY - JOUR

T1 - Unidirectional frequency conversion in microring resonators for on-chip frequency-multiplexed single-photon sources

AU - Heuck, Mikkel

AU - Koefoed, Jacob Gade

AU - Christensen, Jesper Bjerge

AU - Ding, Yunhong

AU - Frandsen, Lars Hagedorn

AU - Rottwitt, Karsten

AU - Oxenløwe, Leif Katsuo

PY - 2019

Y1 - 2019

N2 - Microring resonators are attractive for low-power frequency conversion via Bragg-scattering fourwave-mixing due to their comb-like resonance spectrum, which allows resonant enhancement of all four waves while maintaining energy and momentum conservation. However, the symmetry of such mode structures limits the conversion efficiency to 50% due to the equal probability of up- and down-conversion. Here, we demonstrate how two coupled microrings enable highly directional conversion between the spectral modes of one of the rings. An extinction between up- and down-conversion of more than 40 dB is experimentally observed. Based on this method, we propose a design for on-chip multiplexed single-photon sources that probabilistically generate photon pairs across many frequency modes of a ring resonator and subsequently convert them to a single frequency-thereby enabling quasi-deterministic photon emission. Our numerical analysis shows that once a photon is generated, it can be converted and emitted into a wave packet having a 90% overlap with a Gaussian with 99% efficiency for a ratio between intrinsic and coupling quality factors of 400.

AB - Microring resonators are attractive for low-power frequency conversion via Bragg-scattering fourwave-mixing due to their comb-like resonance spectrum, which allows resonant enhancement of all four waves while maintaining energy and momentum conservation. However, the symmetry of such mode structures limits the conversion efficiency to 50% due to the equal probability of up- and down-conversion. Here, we demonstrate how two coupled microrings enable highly directional conversion between the spectral modes of one of the rings. An extinction between up- and down-conversion of more than 40 dB is experimentally observed. Based on this method, we propose a design for on-chip multiplexed single-photon sources that probabilistically generate photon pairs across many frequency modes of a ring resonator and subsequently convert them to a single frequency-thereby enabling quasi-deterministic photon emission. Our numerical analysis shows that once a photon is generated, it can be converted and emitted into a wave packet having a 90% overlap with a Gaussian with 99% efficiency for a ratio between intrinsic and coupling quality factors of 400.

KW - Single photon source

KW - Quantum information technology

KW - Frequency conversion

U2 - 10.1088/1367-2630/ab09a7

DO - 10.1088/1367-2630/ab09a7

M3 - Journal article

VL - 21

JO - New Journal of Physics

JF - New Journal of Physics

SN - 1367-2630

IS - 3

M1 - 033037

ER -