Results 61 to 70 of about 3,504,323 (217)
Local Realistic Interpretation of Entangled Photon Pairs in the Weyl-Wigner Formalism
Frontiers in Physics, 2020 A polarization correlation experiment with two maximally entangled photons created by spontaneous parametric down-conversion is studied in the Weyl-Wigner formalism, that reproduces the quantum predictions.
Emilio Santos
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Heralded amplification of nonlocality via entanglement swapping
New Journal of Physics, 2020 To observe the loophole-free violation of the Clauser–Horne–Shimony–Holt (CHSH) inequality between distant two parties, i.e. the CHSH value $S\gt 2$ , the main limitation of distance stems from the loss in the transmission channel.
Yoshiaki Tsujimoto +9 more
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Spontaneous parametric down-conversion in chirped, aperiodically-poled crystals [PDF]
International Journal of Quantum Information, 2015 We present a theoretical analysis of the process of spontaneous parametric down conversion (SPDC) in a nonlinear crystal characterized by a linearly-chirped χ(2) grating along the direction of propagation. Our analysis leads to an expression for the joint spectral amplitude, based on which we can derive various spectral–temporal properties of the ...
Sanchez-Lozano, X., Lucio, Jose Luis
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Photonic circuits for generating modal, spectral, and polarization entanglement [PDF]
, 2010 We consider the design of photonic circuits that make use of Ti:LiNbO(3) diffused channel waveguides to generate photons with various combinations of modal, spectral, and polarization entanglement.
Saleh, Bahaa E. A. +13 more
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, 2021 Quantum nonlinear interferometers (QNIs) can measure the infrared physical quantities of a sample by detecting visible photons. A QNI with Michelson geometry based on the spontaneous parametric down-conversion in a second-order nonlinear crystal is ...
Liu-Long Wang (11424799) +9 more
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EPJ Web of Conferences, 2017 We consider the generation of single-photon states with orbital angular momentum in the process of spontaneous parametric down-conversion in a nonlinear crystal placed in a cavity.
Turyikhanov Dinislam +3 more
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Eliminating spectral distinguishability in ultrafast spontaneous parametric down-conversion [PDF]
Physical Review A, 2009 Generation of polarization-entangled photon pairs with a precise timing through down-conversion of femtosecond pulses is often faced with a degraded polarization entanglement quality. In a previous experiment we have shown that this degradation is induced by spectral distinguishability between the two decay paths, in accordance with theoretical ...
Poh, H.S. +4 more
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Sub-megahertz narrow-band photon pairs at 606 nm for solid-state quantum memories
APL Photonics, 2020 We report on the development of a source of ultra-narrow-band photon pairs using the cavity-enhanced spontaneous parametric down conversion. The photon-pair source has a bandwidth of 265 ± 15 kHz at 606 nm and a spectral brightness of 216 ± 5 pairs/(s ...
Jianji Liu +3 more
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EPJ Web of Conferences, 2018 We consider the peculiarities of formation and registration of axially symmetric vortex fields in the context of applying diffractive optical elements such as vortex lenses and vortex axicons for the generation of single-photon states with a nonzero ...
Turaykhanov D.A. +7 more
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S/N ratio of an upconversion detector dominated by upconverted spontaneous parametric down-conversion noise [PDF]
, 2018 We designed an upconversion detector (UCD) for 1575 nm operation. The signal-to-noise ratio of the UCD is investigated by considering the dependence of upconversion efficiency and upconverted spontaneous parametric down-conversion noise on pump power.
Høgstedt, Lasse +9 more
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