Widely Tunable Single-Photon Frequency Conversion in a Nanomechanically Reconfigurable Si-Rich Nitride Waveguide
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Widely Tunable Single-Photon Frequency Conversion in a Nanomechanically Reconfigurable Si-Rich Nitride Waveguide. / Du, Xiushan; Zhai, Yuke; Midolo, Leonardo; Zhang, Lin; Zhou, Xiaoyan.
I: Journal of Lightwave Technology, Bind 40, Nr. 23, 2022, s. 7640-7647.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Widely Tunable Single-Photon Frequency Conversion in a Nanomechanically Reconfigurable Si-Rich Nitride Waveguide
AU - Du, Xiushan
AU - Zhai, Yuke
AU - Midolo, Leonardo
AU - Zhang, Lin
AU - Zhou, Xiaoyan
PY - 2022
Y1 - 2022
N2 - on-demand single-photon source based on self assembled semiconductor quantum dots (QDs) is a key building block for quantum communication and quantum information processing. To scale up, a challenge lies in frequency converting the emitted photons to the telecom wavelengths and eliminating the wavelength difference between multiple QDs. In this paper, we propose a novel nanomechanical silicon-rich nitride waveguide device, which can be reconfigured to realize efficient frequency conversion from the emission wavelength band of InAs/GaAs quantum dots at 900 similar to 950 nm to the telecom C-band around 1550 nm, by exploiting the Bragg scattering process in nonlinear four-wave mixing. Numerical results show that an optimal conversion efficiency over 99% and a signal-to-noise ratio up to 27 dB can be achieved when the waveguide loss is negligible, and the efficiency only reduces to 78% when a realistic loss of 1 dB/cm is considered. We conduct a detailed study on the unwanted noise processes, and provide design guidelines to improve the conversion efficiency and suppress the noises, e.g., by optimizing the power and wavelength of the pump laser.
AB - on-demand single-photon source based on self assembled semiconductor quantum dots (QDs) is a key building block for quantum communication and quantum information processing. To scale up, a challenge lies in frequency converting the emitted photons to the telecom wavelengths and eliminating the wavelength difference between multiple QDs. In this paper, we propose a novel nanomechanical silicon-rich nitride waveguide device, which can be reconfigured to realize efficient frequency conversion from the emission wavelength band of InAs/GaAs quantum dots at 900 similar to 950 nm to the telecom C-band around 1550 nm, by exploiting the Bragg scattering process in nonlinear four-wave mixing. Numerical results show that an optimal conversion efficiency over 99% and a signal-to-noise ratio up to 27 dB can be achieved when the waveguide loss is negligible, and the efficiency only reduces to 78% when a realistic loss of 1 dB/cm is considered. We conduct a detailed study on the unwanted noise processes, and provide design guidelines to improve the conversion efficiency and suppress the noises, e.g., by optimizing the power and wavelength of the pump laser.
KW - Four-wave mixing Bragg scattering
KW - frequency conversion
KW - quantum dot
KW - single-photon source
KW - silicon-rich nitride
KW - tunable nanomechanical structure
KW - 4-WAVE-MIXING BRAGG SCATTERING
KW - SILICON
KW - TRANSLATION
KW - PERFORMANCE
KW - DISPERSION
KW - EFFICIENT
U2 - 10.1109/JLT.2022.3196938
DO - 10.1109/JLT.2022.3196938
M3 - Journal article
VL - 40
SP - 7640
EP - 7647
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
SN - 0733-8724
IS - 23
ER -
ID: 332617169