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Quantum entanglement swapping with spontaneous parametric down conversion
SPIE Proceedings, 2003Two remote parties that have never interacted each other can be entangled through entanglement swapping operation done by a third party. Currently existing entanglement swapping experiments are done probabilistically by postselection, i.e., once a successful swapping is verified, the resultant entanglement is destructed.
Xiang-Bin Wang +3 more
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Significance of heralding in spontaneous parametric down-conversion
Physical Review A, 2014Single photons exhibit nonclassical, counterintuitive behavior that can be exploited in the developing field of quantum technology. They are needed for various applications such as quantum key distribution, optical quantum information processing, quantum computing, intensity measurement standards, and others yet to be discovered in this developing ...
Mark Bashkansky +3 more
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Producing multiple qubits via spontaneous parametric down-conversion
Conference on Lasers and Electro-Optics, 2021We have designed Gaussian masks to subdivide the pump beam before passing it through a BBO. In this way, present an approach to possibly produce multiple entangled photon pairs through spontaneous parametric down-conversion (SPDC).
Phillip Heitert +3 more
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Multimode description of spontaneous parametric down-conversion
Journal of Optics B: Quantum and Semiclassical Optics, 2005We derive the multimode generating function, joint photon-number distribution and joint integrated-intensity distribution for spontaneous parametric down-conversion in relation to measured experimental data.
Jan Peřina, Jaromír Křepelka
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Tiniest Sources of Spontaneous Parametric Down Conversion
Optica Nonlinear Optics Topical Meeting 2023, 2023Spontaneous parametric down-conversion in ultrathin films or metasurfaces has loose phasematching, providing enormous freedom for quantum state engineering. This includes tunable polarization entanglement, resonant enhancement of emission, controlled directivity, and generation of complex quantum states.
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Surface effect on spontaneous parametric down-conversion
SPIE Proceedings, 2012On the interface between two isotropic linear media the re°ection and transmission of separate monochro- matic waves occur in a normal incidence, which are described by Fresnel's formulas. On the interface between two nonlinear media, namely one of the media may be linear in a limit, the re°ection and the transmission are complicated by a wave mixing ...
Antonín Lukš +2 more
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A Model of Terahertz Parametric Process Including Spontaneous Parametric Down-conversion
Journal of Infrared, Millimeter, and Terahertz Waves, 2021A new numerical model of terahertz parametric process is demonstrated, which takes the spontaneous parametric down-conversion into consideration by adding tens of frequency components in the coupled-wave equations. To set the values of some parameters in this model, the residual pump energy and idler spectra during spontaneous parametric down ...
Yu Qin +5 more
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Transverse correlation in optical spontaneous parametric down-conversion
Physical Review A, 1996The transverse correlation between the pairs of photons produced in optical spontaneous parametric down-conversion is analyzed. The interesting features of the correlation arise from the form of the two-photon state generated in the process. The physics of the rings of radiation emerging from the crystal is described.
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Observation of spontaneous parametric down conversion in LiNbO3 waveguide arrays
Conference on Lasers and Electro-Optics 2012, 2012We study experimentally the process of bi-photon generation through spontaneous parametric down-conversion in waveguide arrays. We show the formation of a unique spatial-spectral photon pattern and its dependence on the phase-matching conditions.
Solntsev, Alexander S +6 more
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Spontaneous Parametric Down-Conversion in Structured Environments
International Conference on Quantum Information, 2007I analyze, in a general and quantitative way, the ability of transverse and longitudinal structure in an optical system to enhance the flux and modal purity of spontaneous parametric down-conversion.
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