Broadening the bandwidth of entangled photons: a step towards the generation of extremely short biphotons

Abstract

We demonstrate a technique that allows to fully control the bandwidth of entangled photons independently of the frequency band of interest and of the nonlinear crystal. We show that this technique allows to generate nearly transform-limited biphotons with almost one octave of bandwidth (hundreds of THz) which corresponds to correlation times of just a few femtoseconds. The presented method becomes an enabling tool for attosecond entangled-photons quantum optics. The technique can also be used to generate paired photons with a very high degree of entanglement.

4 pages

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Cited by in corpus (9)

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• Analysis of the time-energy entanglement of down-converted photon pairs by correlated single photon interference
• Frequency correlation requirements on the biphoton wavefunction in an induced coherence experiment between separate sources
• Broadband biphoton source for quantum optical coherence tomography based on a Michelson interferometer
• Space-time wave packets violate the universal relationship between angular dispersion and pulse-front tilt
• Optimizing the Multi-Photon Absorption Properties of N00N States