We demonstrate a high-brightness on-chip photon pair source based on a high-Q racetrackshaped silicon microresonator, achieving a quality factor of approximately $1.75 \times 10^{5}$ and an on-chip photon pair generation brightness of $9.8 \text{MHz} \cdot \text{mW}^{-1} \cdot \text{nm}^{-1}$ .We demonstrate a high-brightness on-chip photon pair source based on a high-Q racetrackshaped silicon microresonator, achieving a quality factor of approximately $1.75 \times 10^{5}$ and an on-chip photon pair generation brightness of $9.8 \text{MHz} \cdot \text{mW}^{-1} \cdot \text{nm}^{-1}$ .

OptoElectronics and Communications Conference and International Conference on Photonics in Switching and Computing (OECC/PSC)Jun 29, 20250 citations

A brilliant source of single photons

Benjamin Heinrich

Nature NanotechnologyDec 1, 20220 citations

All-Around Single-Photon Source

Anonymous

PhysicsJan 14, 20160 citations

Ultrabright and narrowband intra-fiber biphoton source at ultralow pump power

Alexander Bruns, Chia-Yu Hsu, Sergiy Stryzhenko +5 more

Abstract Nonclassical photon sources of high brightness are key components of quantum communication technologies. We here demonstrate the generation of narrowband, nonclassical photon pairs by employing spontaneous four-wave mixing in an optically-dense ensemble of cold atoms within a hollow-core fiber. The brightness of our source approaches the limit of achievable generated spectral brightness at which successive photon pairs start to overlap in time. For a generated spectral brightness per pump power of up to 2 × 10 9 pairs/(s MHz mW) we observe nonclassical correlations at pump powers below 100 nW and a narrow bandwidth of 2 π × 6.5 MHz. In this regime we demonstrate that our source can be used as a heralded single-photon source. By further increasing the brightness we enter the regime where successive photon pairs start to overlap in time and the cross-correlation approaches a limit corresponding to thermal statistics. Our approach of combining the advantages of atomic ensembles and waveguide environments is an important step toward photonic quantum networks of ensemble-based elements.Abstract Nonclassical photon sources of high brightness are key components of quantum communication technologies. We here demonstrate the generation of narrowband, nonclassical photon pairs by employing spontaneous four-wave mixing in an optically-dense ensemble of cold atoms within a hollow-core fiber. The brightness of our source approaches the limit of achievable generated spectral brightness at which successive photon pairs start to overlap in time. For a generated spectral brightness per pump power of up to 2 × 10 9 pairs/(s MHz mW) we observe nonclassical correlations at pump powers below 100 nW and a narrow bandwidth of 2 π × 6.5 MHz. In this regime we demonstrate that our source can be used as a heralded single-photon source. By further increasing the brightness we enter the regime where successive photon pairs start to overlap in time and the cross-correlation approaches a limit corresponding to thermal statistics. Our approach of combining the advantages of atomic ensembles and waveguide environments is an important step toward photonic quantum networks of ensemble-based elements.

arXiv:2208.05230Quantum Science and TechnologyOct 7, 202218 citations

A Predictable Bright Single-Photon Source

K.-G. Lee, Xuewen Chen, Hadi Eghlidi +3 more

Jan 1, 20100 citations

We demonstrate a high-brightness on-chip photon pair source based on a high-Q racetrackshaped silicon microresonator, achieving a quality factor of approximately

1.75 \times 10^{5}

and an on-chip photon pair generation brightness of

9.8 \text{MHz} \cdot \text{mW}^{-1} \cdot \text{nm}^{-1}