Quantum-assisted optical interferometers: instrument requirements

Andrei Nomerotski; Paul Stankus; Anže Slosar; Stephen Vintskevich; Shane Andrewski; Gabriella Carini; Denis Dolzhenko; Duncan England; Eden Figueroa; Sonali Gera; Justine Haupt; Sven Herrmann; Dimitrios Katramatos; Michael Keach; Alexander Parsells; Olli Saira; Jonathan Schiff; Peter Svihra; Thomas Tsang; Yingwen Zhang

doi:10.1117/12.2560272

13 December 2020 Quantum-assisted optical interferometers: instrument requirements

Andrei Nomerotski, Paul Stankus, Anže Slosar, Stephen Vintskevich, Shane Andrewski, Gabriella Carini, Denis Dolzhenko, Duncan England, Eden Figueroa, Sonali Gera, Justine Haupt, Sven Herrmann, Dimitrios Katramatos, Michael Keach, Alexander Parsells, Olli Saira, Jonathan Schiff, Peter Svihra, Thomas Tsang, Yingwen Zhang

Author Affiliations +

Proceedings Volume 11446, Optical and Infrared Interferometry and Imaging VII; 1144617 (2020) https://doi.org/10.1117/12.2560272
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

It has been recently suggested that optical interferometers may not require a phase-stable optical link between the stations if instead sources of quantum-mechanically entangled pairs could be provided to them, enabling extra- long baselines and benefiting numerous topics in astrophysics and cosmology. We developed a new variation of this idea, proposing that two photons from different sources could be interfered at two decoupled stations, requiring only a slow classical information link between them. We show that this approach could allow high- precision measurements of the relative astrometry of the two sources, with a basic calculation giving angular precision of 10 µas in a few hours’ observation of two bright stars. We also give requirements on the instrument for these observations, in particular on its temporal and spectral resolution. Finally, we discuss possible technologies for the instrument implementation and first proof-of-principle experiments.

Conference Presentation

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Andrei Nomerotski, Paul Stankus, Anže Slosar, Stephen Vintskevich, Shane Andrewski, Gabriella Carini, Denis Dolzhenko, Duncan England, Eden Figueroa, Sonali Gera, Justine Haupt, Sven Herrmann, Dimitrios Katramatos, Michael Keach, Alexander Parsells, Olli Saira, Jonathan Schiff, Peter Svihra, Thomas Tsang, and Yingwen Zhang "Quantum-assisted optical interferometers: instrument requirements", Proc. SPIE 11446, Optical and Infrared Interferometry and Imaging VII, 1144617 (13 December 2020); https://doi.org/10.1117/12.2560272

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