Control of quantum transverse correlations on a four-photon system
| Autor: | Ivan F. Santos, Fabio Sciarrino, P. L. de Assis, S. Pádua, J. Ferraz, L. P. Berruezo, M. A. D. Carvalho |
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| Rok vydání: | 2011 |
| Předmět: |
Diffraction
Physics Quantum Physics Photon muliphoton processess FOS: Physical sciences Physics::Optics Quantum imaging Interference (wave propagation) quantum information and processing Atomic and Molecular Physics and Optics Transverse plane Qubit Quantum mechanics quantum optics Quantum Physics (quant-ph) Quantum Parametric statistics |
| Zdroj: | Optics express 19 (2011): 3715–3729. doi:10.1364/OE.19.003715 info:cnr-pdr/source/autori:de Assis P.L. [ 1 ] ; Carvalho M. A. D. [ 1 ] ; Berruezo L. P. [ 1 ] ; Ferraz J. [ 1 ] ; Santos I. F. [ 2 ] ; Sciarrino F. [ 3,4 ] ; Padua S. [ 1 ]/titolo:Control of quantum transverse correlations on a four-photon system/doi:10.1364%2FOE.19.003715/rivista:Optics express/anno:2011/pagina_da:3715/pagina_a:3729/intervallo_pagine:3715–3729/volume:19 |
| ISSN: | 1094-4087 |
| DOI: | 10.1364/oe.19.003715 |
| Popis: | Control of spatial quantum correlations in bi-photons is one of the fundamental principles of Quantum Imaging. Up to now, experiments have been restricted to controlling the state of a single bi-photon, by using linear optical elements. In this work we demonstrate experimental control of quantum correlations in a four-photon state comprised of two pairs of photons. Our scheme is based on a high-efficiency parametric downconversion source coupled to a double slit by a variable linear optical setup, in order to obtain spatially encoded qubits. Both entangled and separable pairs have been obtained, by altering experimental parameters. We show how the correlations influence both the interference and diffraction on the double slit. Comment: 14 pages, 6 figures |
| Databáze: | OpenAIRE |
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