The entanglement of squeezed light beams is critical for quantum optical applications, but has so far been achieved with only two light beams. Now, researchers have surpassed this restriction and achieved entanglement with three beams of different colours. They also report a finite loss level for disentanglement of one beam from the other two.
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© 2009 AAAS
© 2009 AAAS
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Eberly, J., Howell, J. Multicolour entanglement. Nature Photon 4, 12–13 (2010). https://doi.org/10.1038/nphoton.2009.244
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DOI: https://doi.org/10.1038/nphoton.2009.244
