Photons with tunable spectral shapes: The transition from frequency anticorrelated to correlated photon pairs

Details Photons with tunable spectral shapes: The transition from frequency anticorrelated to correlated photon pairs Photons with tunable spectral shapes: The transition from frequency anticorrelated to correlated photon pairs

2009-08-13

arxiv.org/abs/0908.1857v1

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

We present an experimental demonstration of the full control of the frequency correlations of entangled photon pairs. The joint spectrum of photon pairs is continuously varied from photons that exhibit anticorrelation in frequency to photons that exhibit correlation in frequency, passing through the case of uncorrelated photons. Highly entangled frequency-anticorrelated photon pairs were obtained even when an ultrafast laser was used as a pump. The different kinds of correlations are obtained without changing neither the wavelength, nor the nonlinear crystal.

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