Impact of Backscattering in Silicon Micro-ring Resonators on Photon Pair Generation

Suo, Jing; Zhang, Wei

doi:10.7566/jpsj.86.054401

Cited by 4 publications

(3 citation statements)

References 24 publications

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“…The fitted slopes of six combinations were 2.03, 1.91, 1.91, 1.94, 1.94 and 1.92. All the slopes are close to 2, showing that under all the channel combinations the main contribution of the coincident counts is due to the photon pairs generated by SFWM [11] . At the pump level of 0.59mW, the CCRs of ch12 and ch34 reached ~550Hz, while the average CCR of other four combinations was ~72Hz.…”

Section: (B)mentioning

confidence: 68%

“…It can be seen that for all the six combinations, there are obvious coincident counts recorded, which rise with increasing pump level. Ch12 and ch34 respected the CCR of CCW and CW respectively, while the other four came from photons induced by backscattering, which is mainly caused by the roughness of waveguide sidewall [11] . The fitted slopes of six combinations were 2.03, 1.91, 1.91, 1.94, 1.94 and 1.92.…”

Section: (B)mentioning

confidence: 99%

See 1 more Smart Citation

Generation of frequency-degenerate photon pairs in a bidirectionally pumped silicon micro-ring resonator

Ma,

Ye,

Ruan

et al. 2023

AOPC 2023: AI in Optics and Photonics

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Section: (B)mentioning

confidence: 68%

Section: (B)mentioning

confidence: 99%

Generation of frequency-degenerate photon pairs in a bidirectionally pumped silicon micro-ring resonator

Ma,

Ye,

Ruan

et al. 2023

AOPC 2023: AI in Optics and Photonics

View full text Add to dashboard Cite

“…Typically, their transmission displays Lorentzianshaped resonant peaks, reaching a minimum when the ring circumference is an integer multiple of the wavelength [12]. However, these devices are vulnerable to backscatter [13].…”

Section: Introductionmentioning

confidence: 99%

Backscatter and Spontaneous Four-Wave Mixing in Micro-Ring Resonators

Hance,

Sinclair,

Rarity

2020

Preprint

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We model backscatter for electric fields propagating through optical micro-ring resonators, as occurring both in-ring and in-coupler. These provide useful tools for modelling transmission and in-ring fields in these optical devices. We then discuss spontaneous four-wave mixing and use the models to obtain heralding efficiencies and rates. We observe a trade-off between these, which gets more extreme as the rings become more strongly backscattered.

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Backscattering in nonlinear microring resonators via a Gaussian treatment of coupled cavity modes

McCutcheon

2021

APL Photonics

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Systems of coupled cavity modes have the potential to provide bright quantum optical states of light in a highly versatile manner. Microring resonators, for instance, are highly scalable candidates for photon sources. Thanks to CMOS fabrication techniques for their small footprint and the relative ease of coupling many such microrings together. However, surface roughness of the waveguides and defects in the coupler geometry routinely induce splitting of the cavity modes due to backscattering and backcoupling. The parasitic back-propagating mode in a microring leads to hybridization of the modes, altering the linear and nonlinear properties of a system of coupled cavity modes and ultimately constraining the fidelity of quantum light sources that can be produced. In this paper, we derive a comprehensive general model for Gaussian nonlinear processes in systems of coupled cavity modes based on an effective field Hamiltonian and a dispersive input–output model. The resulting dynamics of the equations of motion are evaluated in a Gaussian process formalism via symplectic transformations on the optical modes. We then use this framework to numerically model and explore the problem of backscattering in microring resonators in physically relevant parameter regimes, involving the splitting of various resonances, and we calculate the consequent impurity and heralding efficiency of various heralded photon schemes. We provide a perturbative explanation of the observations and assess the correspondence between spontaneous and stimulated processes in these systems.

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Impact of Backscattering in Silicon Micro-ring Resonators on Photon Pair Generation

Cited by 4 publications

References 24 publications

Generation of frequency-degenerate photon pairs in a bidirectionally pumped silicon micro-ring resonator

Generation of frequency-degenerate photon pairs in a bidirectionally pumped silicon micro-ring resonator

Backscatter and Spontaneous Four-Wave Mixing in Micro-Ring Resonators

Backscattering in nonlinear microring resonators via a Gaussian treatment of coupled cavity modes

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