Results 41 to 50 of about 3,069,996 (290)

Cryogenic integrated spontaneous parametric down-conversion

open access: yes, 2021
Scalable quantum photonics relies on interfacing many optical components under mutually compatible operating conditions. To that end, we demonstrate that spontaneous parametric down-conversion (SPDC) in nonlinear waveguides, a standard technology for ...
Tim J. Bartley (14340576)   +6 more
core   +1 more source

Supplementary document for Cryogenic integrated spontaneous parametric down-conversion - 5591608.pdf

open access: yes, 2022
Supplemental Document for Cryogenic integrated spontaneous parametric down ...
Jan Philipp Hoepker (11811794)   +6 more
core   +1 more source

Advances in nonlinear metasurfaces for imaging, quantum, and sensing applications

open access: yesNanophotonics, 2023
Metasurfaces, composed of artificial meta-atoms of subwavelength size, can support strong light–matter interaction based on multipolar resonances and plasmonics, hence offering the great capability of empowering nonlinear generation.
Zheng Ze   +10 more
doaj   +1 more source

Spontaneous parametric down conversion in a nanophotonic waveguide

open access: yesOptics Express, 2007
Recently, we verified that spontaneous parametric down conversion (SPDC) is enhanced in a waveguide, in agreement with theory showing an inverse dependence on mode confinement [1]. Here we investigate highly-confined nanophotonic waveguides designed to maximize the SPDC rate.
Sean M, Spillane   +2 more
openaire   +2 more sources

Towards terahertz detection and calibration through spontaneous parametric down-conversion in the terahertz idler-frequency range generated by a 795 nm diode laser system

open access: yesAPL Photonics, 2018
We study a calibration scheme for terahertz wave nonlinear-optical detectors based on spontaneous parametric down-conversion. Contrary to the usual low wavelength pump in the green, we report here on the observation of spontaneous parametric down ...
Vladimir V. Kornienko   +4 more
doaj   +1 more source

Full characterization of spontaneous parametric down conversion in non-ideal quarter-wavelength semiconductor Bragg reflection waveguide

open access: yesFrontiers in Physics, 2023
Entangled photons are important for testing foundations of quantum physics and are at the heart of quantum technology. Integrated photonics has overwhelming dominance in terms of density and performance, making it a promise route for scalable quantum ...
Bin Niu   +15 more
doaj   +1 more source

Controlling the Spectrum of Spontaneous Parametric Down-Conversion in Nonlinear Crystals by External Electric Field

open access: yesEPJ Web of Conferences, 2015
. We discuss the possibilities of controlling the spectrum of correlated photons generated via spontaneous parametric down-conversion by using external homogeneous electric field acting on the nonlinear crystal.
Akatiev D.O., Kalachev A.A.
doaj   +1 more source

Understanding High-Gain Twin-Beam Sources Using Cascaded Stimulated Emission

open access: yesPhysical Review X, 2020
We present a new method for the spectral characterization of pulsed twin-beam sources in the high-gain regime, using cascaded stimulated emission. We show an implementation of this method for a periodically poled potassium titanyl phosphate spontaneous ...
Gil Triginer   +7 more
doaj   +1 more source

Measurement of two-photon position–momentum Einstein–Podolsky–Rosen correlations through single-photon intensity measurements

open access: yesNew Journal of Physics, 2022
The measurement of the position–momentum Einstein–Podolsky–Rosen (EPR) correlations of a two-photon state is important for many quantum information applications ranging from quantum key distribution to coincidence imaging.
Abhinandan Bhattacharjee   +2 more
doaj   +1 more source

PARAMETRIC DOWN-CONVERSION IN PHOTONIC CRYSTAL WAVEGUIDES [PDF]

open access: yesInternational Journal of Modern Physics B, 2006
Photonic crystals create dramatic new possibilities for nonlinear optics. I suggest to use defect waveguides for the production of pairs of photons in order to achieve particular dispersion characteristics and potentially very high brightness. I identify two possible phase-matching schemes and discuss their properties and advantages.
openaire   +2 more sources

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