Boyer, V.
, Marino, A.
, Pooser, R.
and Lett, P.
(2008),
Entangled Images from Four-Wave Mixing, Science, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=842458
(Accessed October 26, 2025)
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Entangled Images from Four-Wave Mixing
Published
Author(s)
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Abstract
Two beams of light can be quantum mechanically entangled through correlations of their phase and intensity fluctuations. For a pair of spatially extended image-carrying light fields, the concept of entanglement can be applied not only to the entire images but also to their smaller details. We used a spatially multimode amplifier based on four-wave mixing in a hot vapor to produce twin images that exhibit localized entanglement. The images can be bright fields that display position-dependent quantum noise reduction in their intensity difference or vacuum twin beams that are strongly entangled when projected onto a large range of different spatial modes. The high degree of spatial entanglement demonstrates that the system is an ideal source for parallel continuous-variable quantum information protocols.Citation
Science
Volume
321
Issue
1158275
Pub Type
Journals
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Keywords
alkali vapor, four-wave mixing, nonlinear optics, quadrature entanglement, quantum imaging, spatial entanglement, squeezed light
Citation
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Created July 25, 2008, Updated February 17, 2017