1. Optical Coherence Tomography with an SU(1,1) interferometer in the high parametric gain regime

    Optical Coherence Tomography with an SU(1,1) interferometer in the high parametric gain regime

    Gerard J. Machado,1, a) Gaetano Frascella,2, 3 Juan P. Torres,1, 4 and Maria V. Chekhova

    We demonstrate optical coherence tomography based on an SU(1,1) nonlinear interferometer with high-gain parametric down-conversion. For imaging and sensing applications, this scheme promises to outperform previous experiments working at low parametric gain, since higher photon fluxes provide better sensitivity and lower integration times for obtaining high-quality images. Moreover, there is no need to use single-photon detectors and standard spectrometers can be used instead.

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