# Three-Color Entanglement

@article{Coelho2009ThreeColorE, title={Three-Color Entanglement}, author={Antonio S. Coelho and Felippe A. S. Barbosa and Katiuscia Nadyne Cassemiro and Alessandro S. Villar and Marcelo Martinelli and Paulo A. Nussenzveig}, journal={Science}, year={2009}, volume={326}, pages={823 - 826} }

Entangling Rainbows Quantum mechanical entanglement is at the heart of quantum information processing. In the future, practical systems will contain a network of quantum components, possibly operating at different frequencies. Coelho et al. (p. 823, published online 17 September) present a technique that can entangle light beams of three different frequencies. The ability to swap entanglement between different light fields should prove useful in advanced quantum information protocols on systems…

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