Quantum-adapted all-optical time multiplexing super-resolved imaging

• Published in: 2024 24th International Conference on Transparent Optical Networks (ICTON) p. 1
• Main Authors: Ashkenazy, Ariel, Shabairou, Nadav, Fixler, Dror, Cohen, Eliahu, Zalevsky, Zeev
• Format: Conference Proceeding
• Language: English
• Published: IEEE 14.07.2024
• Subjects: Decoding; Detectors; Image coding; Optical fiber networks; Photonics; Spatial resolution; Superresolution
• ISSN: 2161-2064
• DOI: 10.1109/ICTON62926.2024.10648204

In this presentation we explore a novel scheme for super-resolution that can also be adjusted for quantum sensing case. The scheme is sharing the same ideas of time-multiplexing followed by spatial homodyne detection. In the proposed super-resolving approach, the super resolution is performed without knowing the projected random encoding pattern (i.e. projected on the object) since the decoding is done in an-all optical manner and not in digital post-processing. This is obtained since the same random projected pattern is projected both on the object as well as on the sensing detector. Due to the non-linearity of the detector (it captures intensity) a product between the low-resolution image and the projected high resolution encoding pattern is generated, which is essential for the decoding process. By performing time integration while modifying the projected encoding pattern, a super-resolved image is decoded on the detector. In the quantum case, the generation and detection of entangled photons enables to further improve the spatial resolution and, in some cases, to go below the shot noise limit. Additional scheme using parametric homodyne detection of entangled photon pairs will be shown to present unique advantages, especially when imaging phase-only objects.