Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

International Conference Laser Optics (ICLO)

Gaussian Entangled States Formation In An Array Of Waveguides With Quadratic Nonlinearity

V. O. Martynov, Vyacheslav A. Mironov

Published Jun 1, 2018• 0 citations
Publisher

Abstract

Formation of Gaussian entangled states in an array of optic waveguides due to spontaneous parametric down-conversion of classical pump in one of waveguides has been studied. Also the influence of phase noise in the pump on entanglement evolution has been considered.
DOI
10.1109/lo.2018.8435738

Related papers

Generation of gaussian entangled states of light in an array of nonlinear waveguides

V. O. Martynov, Mironov, V. A., Lev A. Smirnov

We investigate the process of entangled state of light generation while propagation along a one dimensional array of single-mode nonlinear waveguides. We consider a situation when entanglement is formed due to spontaneous parametric down-conversion of the pump which is present only in a signal waveguide. In the considered process the generated state of light is multi-mode squeezed. We demonstrate that starting from certain distance of light propagation only pairs of waveguides, located symmetrically with respect to the pumped one, occur to be entangled. Also there is an optimal pump amplitude for which the formed quantum correlations are most pronounced. Entanglement for multi-mode squeezed states may be very sensitive for phase fluctuations in the pump. We investigate the influence of such noise on the discussed process. We demonstrate that for situation of generation of few photon entangled states the influence of phase fluctuations is negligible. But it dramatically increase with the growth of average photon numbers in the formed quantum states.

arXiv:1907.02777•Jul 5, 2019•0 citations

Spontaneous Parametric Down-Conversion and Quantum Walks in Arrays of Quadratic Nonlinear Waveguides

Alexander S. Solntsev, Andrey A. Sukhorukov, Dragomir N. Neshev +1 more

We analyze the process of photon-pair generation with simultaneous quantum walks in a quadratic nonlinear waveguide array. We demonstrate that the spontaneous parametric down-conversion in the array allows for creating quantum states with strongly pronounced spatial correlations, which are qualitatively different from those possible in bulk crystals or through quantum walks in linear waveguide arrays. Most importantly, the photon correlations can be controlled entirely classically by varying the spatial profile of the pump beam or the phase-matching conditions.

arXiv:1108.6116•Physical Review Letters•Jan 10, 2012•92 citations

Biphoton generation in quadratic waveguide arrays: A classical optical simulation

M. Gräfe, A. S. Solntsev, R. Keil +6 more

Quantum entanglement became essential in understanding the non-locality of quantum mechanics. In optics, this non-locality can be demonstrated on impressively large length scales, as photons travel with the speed of light and interact only weakly with their environment. Spontaneous parametric down-conversion (SPDC) in nonlinear crystals provides an efficient source for entangled photon pairs, so-called biphotons. However, SPDC can also be implemented in nonlinear arrays of evanescently coupled waveguides which allows the generation and the investigation of correlated quantum walks of such biphotons in an integrated device. Here, we analytically and experimentally demonstrate that the biphoton degrees of freedom are entailed in an additional dimension, therefore the SPDC and the subsequent quantum random walk in one-dimensional arrays can be simulated through classical optical beam propagation in a two-dimensional photonic lattice. Thereby, the output intensity images directly represent the biphoton correlations and exhibit a clear violation of a Bell-like inequality.

arXiv:1205.4085•Scientific Reports•Aug 7, 2012•46 citations

Photonic cluster state generation in nonlinear waveguide arrays

James Titchener, Alexander S. Solntsev, Andrey A. Sukhorukov

We present a novel approach for all-optically reconfigurable integrated generation of quantum entangled photons in cluster states through spontaneous parametric down-conversion in coupled arrays of quadratic nonlinear waveguides with special poling patterns.

Photonics and Fiber Technology Congress (ACOFT, BGPP, NP)•Jan 1, 2016•1 citation

Classical Optical Simulation of Bi-Photon Generation in Quadratic Waveguide Arrays

Markus Gräfe, Alexander S. Solntsev, Robert Keil +5 more

We suggest and demonstrate experimentally that evolution of classical light can simulate bi-photon generation through spontaneous parametric down-conversion and correlated quantum walks in waveguide arrays, including violation of Bell’s inequality.

OSA Advanced Photonics Congress•Jan 1, 2012•0 citations

Classical Optical Simulation of Bi-Photon Generation in Quadratic Waveguide Arrays

Markus Gräfe, Alexander S. Solntsev, Robert Keil +5 more

We suggest and demonstrate experimentally that evolution of classical light can simulate bi-photon generation through spontaneous parametric down-conversion and correlated quantum walks in waveguide arrays, including violation of Bell’s inequality.

Conference on Lasers and Electro-Optics•Jan 1, 2012•0 citations
We investigate the process of entangled state of light generation while propagation along a one dimensional array of single-mode nonlinear waveguides. We consider a situation when entanglement is formed due to spontaneous parametric down-conversion of the pump which is present only in a signal waveguide. In the considered process the generated state of light is multi-mode squeezed. We demonstrate that starting from certain distance of light propagation only pairs of waveguides, located symmetrically with respect to the pumped one, occur to be entangled. Also there is an optimal pump amplitude for which the formed quantum correlations are most pronounced. Entanglement for multi-mode squeezed states may be very sensitive for phase fluctuations in the pump. We investigate the influence of such noise on the discussed process. We demonstrate that for situation of generation of few photon entangled states the influence of phase fluctuations is negligible. But it dramatically increase with the growth of average photon numbers in the formed quantum states.
We analyze the process of photon-pair generation with simultaneous quantum walks in a quadratic nonlinear waveguide array. We demonstrate that the spontaneous parametric down-conversion in the array allows for creating quantum states with strongly pronounced spatial correlations, which are qualitatively different from those possible in bulk crystals or through quantum walks in linear waveguide arrays. Most importantly, the photon correlations can be controlled entirely classically by varying the spatial profile of the pump beam or the phase-matching conditions.
Quantum entanglement became essential in understanding the non-locality of quantum mechanics. In optics, this non-locality can be demonstrated on impressively large length scales, as photons travel with the speed of light and interact only weakly with their environment. Spontaneous parametric down-conversion (SPDC) in nonlinear crystals provides an efficient source for entangled photon pairs, so-called biphotons. However, SPDC can also be implemented in nonlinear arrays of evanescently coupled waveguides which allows the generation and the investigation of correlated quantum walks of such biphotons in an integrated device. Here, we analytically and experimentally demonstrate that the biphoton degrees of freedom are entailed in an additional dimension, therefore the SPDC and the subsequent quantum random walk in one-dimensional arrays can be simulated through classical optical beam propagation in a two-dimensional photonic lattice. Thereby, the output intensity images directly represent the biphoton correlations and exhibit a clear violation of a Bell-like inequality.