Spectrometer based on SPAD linear array with subnanosecond timing resolution and single photon sensitivity for quantum-assisted optical interferometers

Andrei Nomerotski

doi:10.1117/12.2666553

9 June 2023 Spectrometer based on SPAD linear array with subnanosecond timing resolution and single photon sensitivity for quantum-assisted optical interferometers

Andrei Nomerotski

Author Affiliations +

Proceedings Volume PC12570, Quantum Optics and Photon Counting 2023; PC1257004 (2023) https://doi.org/10.1117/12.2666553
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic

Abstract

Spectrometer based on SPAD linear array with sub-nanosecond timing resolution and single photon sensitivity for quantum-assisted optical interferometers. A.Nomerotski, P.Stankus, M.Keach, B.Farella, J.Crawford, R.Abrahao (BNL) E.Charbon, S.Burri, C.Bruschini, E.Bernasconi (EPFL) S.Kulkov, J.Jirsa, M.Marcisovsky (Czech TU) Improved quantum sensing of photons from astronomical objects could provide high resolution observations in the optical benefiting numerous fields in astrophysics and cosmology. It has been recently proposed that stations in optical interferometers would not require a phase-stable optical link if instead sources of quantum-mechanically entangled pairs could be provided to them, enabling extra-long baselines, and potentially improving the astrometrical precision by orders of magnitude. The basic observational event will be the registration of two photons in the system close enough together in time and frequency to be in the same temporal mode, and so be indistinguishable. This will require spectrometers with sub-nm spectral and sub-ns timing resolution with single photon sensitivity. In this contribution we describe a possible design of such a spectrometer and its characterization.

Conference Presentation

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Andrei Nomerotski "Spectrometer based on SPAD linear array with subnanosecond timing resolution and single photon sensitivity for quantum-assisted optical interferometers", Proc. SPIE PC12570, Quantum Optics and Photon Counting 2023, PC1257004 (9 June 2023); https://doi.org/10.1117/12.2666553

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KEYWORDS

Spectroscopy

Single photon

Single photon avalanche diodes

Interferometers

Quantum optics

Spectral resolution

Argon

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