Related papers: Demonstration of Fourier-domain Quantum Optical Coherence Tomography for a fast tomographic quantum imaging

Demonstration of Fourier-domain Quantum Optical Coherence Tomography for a fast tomographic quantum imaging

URL: http://arxiv.org/abs/2502.08372v1
Date: Wed, 12 Feb 2025 13:04:46 GMT
Title: Demonstration of Fourier-domain Quantum Optical Coherence Tomography for a fast tomographic quantum imaging
Authors: Sylwia M. Kolenderska, Crislane Vieira de Brito, Piotr Kolenderski,
Abstract summary: Quantum Optical Coherence Tomography (Q- OCT) outperforms classical OCT in several experimental terms. It provides twice better axial resolution with the same spectral bandwidth. It is immune to even-order chromatic dispersion.
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Abstract: Using spectrally correlated photon pairs instead of classical laser light and coincidence detection instead of light intensity detection, Quantum Optical Coherence Tomography (Q-OCT) outperforms classical OCT in several experimental terms. It provides twice better axial resolution with the same spectral bandwidth and it is immune to even-order chromatic dispersion, including Group Velocity Dispersion responsible for the bulk of axial resolution degradation in the OCT images. Q-OCT has been performed in the time domain configuration, where one line of the two-dimensional image is acquired by axially translating the mirror in the interferometer's reference arm and measuring the coincidence rate of photons arriving at two single-photon-sensitive detectors. Although successful at producing resolution-doubled and dispersion-cancelled images, it is still relatively slow and cannot compete with its classical counterpart. Here, we experimentally demonstrate Q-OCT in a novel Fourier-domain configuration, theoretically proposed in 2020, where the reference mirror is fixed and the joint spectra are acquired. We show that such a configuration allows for faster image acquisition than its time-domain configuration, providing a step forward towards a practical and competitive solution in the OCT arena. The limitations of the novel approach are discussed, contrasted with the limitations of both the time-domain approach and the traditional OCT.

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