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Entangling Light in its Spatial Degrees of Freedom with Four‐Wave Mixing in an Atomic Vapor |
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| Authors: | Vincent Boyer Dr Alberto M Marino Dr Raphael C Pooser Dr Paul D Lett Dr |
| Institution: | 1. Joint Quantum Institute, National Institute of Standards and Technology, University of Maryland, Gaithersburg, MD 20899 (USA);2. MUARC, School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom) |
| Abstract: | Nonlinearities in atomic vapors allow the production of “entangled images”—beams of light whose transverse light distributions exhibit localized correlations in their unavoidable quantum fluctuations (see picture). These spatially entangled beams may prove useful to reduce the noise in absorption imaging and beam positioning below the quantum noise level, as well as for quantum information applications.  |
| Keywords: | absorption imaging atomic vapors entangled beams four‐wave mixing rubidium |