1. 0.54 μm resolution two-photon interference with dispersion cancellation for quantum optical coherence tomography

    0.54 μm resolution two-photon interference with dispersion cancellation for quantum optical coherence tomography

    Quantum information technologies harness the intrinsic nature of quantum theory to beat the limitations of the classical methods for information processing and communication. Recently, the application of quantum features to metrology has attracted much attention. Quantum optical coherence tomography (QOCT), which utilizes two-photon interference between entangled photon pairs, is a promising approach to overcome the problem with optical coherence tomography (OCT): As the resolution of OCT becomes higher, degradation of the resolution due to dispersion within the medium becomes more critical. Here we report on the realization of 0.54  μ m resolution two-photon interference, which surpasses the current record resolution ...

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