Ultrabroadband entangled photons on a nanophotonic chip

UA Javid, J Ling, J Staffa, M Li, Y He, Q Lin - Physical review letters, 2021 - APS
The development of quantum technologies on nanophotonic platforms has seen momentous
progress in the past decade. Despite that, a demonstration of time-frequency entanglement …

Quantum sensing with extreme light

M Kutas, BE Haase, F Riexinger… - Advanced Quantum …, 2022 - Wiley Online Library
Optical nonlinear conversion processes are ubiquitously applied to scientific as well as
industrial tasks. In particular, nonlinear processes are employed to generate radiation in …

Microscale generation of entangled photons without momentum conservation

C Okoth, A Cavanna, T Santiago-Cruz, MV Chekhova - Physical review letters, 2019 - APS
We report, for the first time, the observation of spontaneous parametric down-conversion
(SPDC) free of phase matching (momentum conservation). We alleviate the need to …

Multiphoton effects enhanced due to ultrafast photon-number fluctuations

KY Spasibko, DA Kopylov, VL Krutyanskiy… - Physical Review Letters, 2017 - APS
The rate of an n-photon effect generally scales as the n th order autocorrelation function of
the incident light, which is high for light with strong photon-number fluctuations …

Engineering the optical vacuum: Arbitrary magnitude, sign, and order of dispersion in free space using space–time wave packets

M Yessenov, LA Hall, AF Abouraddy - ACS Photonics, 2021 - ACS Publications
Spatial structuring of an optical pulse can lead in some cases upon free propagation to
changes in its temporal profile. For example, introducing conventional angular dispersion …

Broadband bright twin beams and their upconversion

MV Chekhova, S Germanskiy, DB Horoshko… - Optics letters, 2018 - opg.optica.org
We report on the observation of broadband (40 THz) bright twin beams through high-gain
parametric downconversion in an aperiodically poled lithium niobate crystal. The output …

Generation and application of broadband biphoton fields (brief review)

KG Katamadze, AV Pashchenko, AV Romanova… - JETP Letters, 2022 - Springer
Biphoton fields obtained in spontaneous parametric down-conversion are among the main
tools of modern quantum optics. Temporal correlations between photons in the pair play a …

Optimizing the Parameters of a Periodically Poled LiNbO3 Nanowaveguide Structure for Generating Ultrabroadband Biphotons in the Near-IR Range

OA Ermishev, MA Smirnov, AF Khairullin… - Bulletin of the Russian …, 2022 - Springer
For quantum biomicroscopy, light sources need to provide a reliable signal at low intensity
levels with a high rate generation in the near-infrared region. To develop this light source …

Bright ultra-broadband fiber-based biphoton source

MA Smirnov, IV Fedotov, AM Smirnova… - arXiv preprint arXiv …, 2024 - arxiv.org
In this Letter, we report a first experimental realization of bright ultra-broadband (180 THz)
fiber-based biphoton source with widely spectrally separated signal and idler photons. Such …

Compact, single-mode fiber-coupled, correlated photon pair source based on type-I beta-barium borate crystal

CT Holló, T Sarkadi, M Galambos, D Bíró… - Optical …, 2022 - spiedigitallibrary.org
A small, portable, high-flux correlated photon-pair source has been designed and
constructed from simple opto-mechanical parts. Unique to this device is its straightforward …