Anisotropic narrowing of biphoton wave packet distribution in spontaneous parametric down-conversion with biaxial crystal
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Modern Optics"
DOI: 10.1080/09500340.2017.1393568
Abstract: Abstract We investigate theoretically the strong anisotropy in the wave packet distribution of biphoton pairs generated via spontaneous parametric down-conversion (SPDC) process with biaxial crystals. From the angle relationship in biaxial crystals, we deduce the… read more here.
Keywords: wave packet; biphoton; spontaneous parametric; parametric conversion ... See more keywords
Improving the purity of heralded single-photon sources through spontaneous parametric down-conversion process
Sign Up to like & getrecommendations! Published in 2021 at "Chinese Physics B"
DOI: 10.1088/1674-1056/abfb5c
Abstract: The high-purity single-photon source plays an important role in the field of quantum information. Usually, it is generated through spontaneous parametric down-conversion process. In this paper, we investigate and summarize a few approaches on obtaining… read more here.
Keywords: spontaneous parametric; parametric conversion; photon sources; purity ... See more keywords
Effect of thickness variations of lithium niobate on insulator waveguide on the frequency spectrum of spontaneous parametric down-conversion
Sign Up to like & getrecommendations! Published in 2021 at "Chinese Physics B"
DOI: 10.1088/1674-1056/ac22a1
Abstract: We study the effect of waveguide thickness variations on the frequency spectrum of spontaneous parametric down-conversion in the periodically-poled lithium niobate on insulator (LNOI) waveguide. We analyze several variation models and our simulation results show… read more here.
Keywords: spectrum spontaneous; lithium niobate; spontaneous parametric; thickness variations ... See more keywords
Optimizing spontaneous parametric down-conversion sources for boson sampling
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review A"
DOI: 10.1103/physreva.101.063821
Abstract: An important step for photonic quantum technologies is the demonstration of a quantum advantage through boson sampling. In order to prevent classical simulability of boson sampling, the photons need to be almost perfectly identical and… read more here.
Keywords: optimizing spontaneous; spontaneous parametric; spdc sources; parametric conversion ... See more keywords
Spontaneous parametric down-conversion induced by optomechanical gradient forces in nanophotonic waveguides
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DOI: 10.1103/physreva.103.023513
Abstract: The authors study a waveguide system of two parallel nanobeams coupled by the evanescent field of the light propagating in the wider guide, and show how the light field can be used to induce and… read more here.
Keywords: optomechanical gradient; spontaneous parametric; induced optomechanical; parametric conversion ... See more keywords
Experimental generation of polarization entanglement from spontaneous parametric down-conversion pumped by spatiotemporally highly incoherent light
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review A"
DOI: 10.1103/physreva.107.l041701
Abstract: The influence of pump coherence on the entanglement produced in spontaneous parametric down-conversion (SPDC) is important to understand, both from a fundamental perspective, and from a practical standpoint for controlled generation of entangled states. In… read more here.
Keywords: spatiotemporally highly; spontaneous parametric; highly incoherent; parametric conversion ... See more keywords
Polarization Entanglement from Parametric Down-conversion with an LED Pump
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review Applied"
DOI: 10.1103/physrevapplied.19.054079
Abstract: Spontaneous parametric down-conversion (SPDC) is a reliable platform for entanglement generation. Routinely, a coherent laser beam is an essential prerequisite for pumping the nonlinear crystal. Here we break this barrier to generate polarization entangled photon… read more here.
Keywords: polarization entanglement; entanglement parametric; parametric conversion; polarization ... See more keywords
Evidence for Collective Nonlinear Interactions in X Ray into Ultraviolet Parametric Down-Conversion.
Sign Up to like & getrecommendations! Published in 2019 at "Physical review letters"
DOI: 10.1103/physrevlett.122.023902
Abstract: We present the observation of peculiar nonmonotonic photon energy dependencies of the count rates and of the rocking curves of parametric down-conversion of x rays into ultraviolet far from any atomic resonances. The observations cannot… read more here.
Keywords: interactions ray; nonlinear interactions; parametric conversion; collective nonlinear ... See more keywords
Strongly nondegenerate spontaneous parametric down-conversion for calibration of terahertz-wave detectors
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Quantum Information"
DOI: 10.1142/s021974991740024x
Abstract: The impact of spatial limitation of the nonlinear interaction volume on the spontaneous parametric down-conversion spectra in a strongly nondegenerate regime is analyzed from the point of absolute calibration of the terahertz-wave nonlinear-optical detectors. We… read more here.
Keywords: spontaneous parametric; parametric conversion; calibration terahertz; conversion ... See more keywords
Avalanche parametric conversion and white spectrum generation from infrared femtosecond pulses in glasses.
Sign Up to like & getrecommendations! Published in 2018 at "Optics express"
DOI: 10.1364/oe.26.017649
Abstract: The observation of discrete lines in the white spectrum at the initial stage of filamentation of powerful femtosecond laser pulses, propagating in silica glasses, as well as the filamentation without plasma channels observed in the… read more here.
Keywords: generation; parametric conversion; white spectrum; avalanche parametric ... See more keywords
Bright correlated twin-beam generation and radiation shaping in high-gain parametric down-conversion with anisotropy.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.424977
Abstract: Uniaxial anisotropy in nonlinear birefringent crystals limits the efficiency of nonlinear optical interactions and breaks the spatial symmetry of light generated in the parametric down-conversion (PDC) process. Therefore, this effect is usually undesirable and must… read more here.
Keywords: anisotropy; parametric conversion; correlated twin; bright correlated ... See more keywords