Large baseline optical imaging assisted by single photons and linear quantum optics

• URL: http://arxiv.org/abs/2212.08516v2
• Date: Thu, 6 Apr 2023 07:47:37 GMT
• Title: Large baseline optical imaging assisted by single photons and linear quantum optics
• Authors: Marta Maria Marchese and Pieter Kok
• Abstract summary: We show that it is possible to extend the baseline of an interferometric optical telescope and thus improve diffraction-limited imaging of point source positions. The quantum interferometer is based on single-photon sources, linear optical circuits, and efficient photon number counters.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In this work, we show that by combining quantum metrology and networking tools, it is possible to extend the baseline of an interferometric optical telescope and thus improve diffraction-limited imaging of point source positions. The quantum interferometer is based on single-photon sources, linear optical circuits, and efficient photon number counters. Surprisingly, with thermal (stellar) sources of low photon number per mode and high transmission losses across the baseline, the detected photon probability distribution still retains a large amount of Fisher information about the source position, allowing for a significant improvement in the resolution of positioning point sources, on the order of 10 {\mu}as. Our proposal can be implemented with current technology. In particular, our proposal does not require experimental optical quantum memories.

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