Quantum telescopes

Daniel Gottesman

doi:10.1117/12.2563358

13 December 2020 Quantum telescopes

Daniel Gottesman

Proceedings Volume 11446, Optical and Infrared Interferometry and Imaging VII; 1144615 (2020) https://doi.org/10.1117/12.2563358
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

In optical and IR wavelengths, typical astronomical sources have only one or a few photons arriving at a time, meaning the light is really a quantum object. This makes interferometry over longer baselines a major challenge, requiring a truly quantum interference measurement between distant elements in the array rather than local measurements which can be combined later. Luckily, our ability to manipulate and preserve quantum states has taken major strides forward in the last few decades with the rise of quantum information technologies. I will explain how entangled quantum states and a technology called "quantum repeaters" can make possible telescope arrays with much longer baselines than existing facilities, and discuss progress towards making such quantum telescopes a reality.

Conference Presentation

Citation Download Citation

Daniel Gottesman "Quantum telescopes", Proc. SPIE 11446, Optical and Infrared Interferometry and Imaging VII, 1144615 (13 December 2020); https://doi.org/10.1117/12.2563358

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