1. Optical sectioning in induced coherence tomography with frequency-entangled photons

    Optical sectioning in induced coherence tomography with frequency-entangled photons

    We demonstrate an experimental configuration to perform optical sectioning of a sample based on the concept of induced coherence [Zou et al., Phys. Rev. Lett. 67, 3187 (1991)]. This can be viewed as a new type of optical coherence tomography scheme, where different reflectivities of the sample under study translates into changes of the degree of first-order coherence between two beams. The induced coherence tomography scheme proposed here uses frequency-entangled photons embedded in a nonlinear interferometer. As practical advantage the scheme allows probing the sample with one wavelength and measuring light with another wavelength. In a bio-imaging scenario, this would ...

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