Quantum networks provide a platform for astronomical interferometers capable of imaging faint stellar objects. In a recent work [arXiv:1809.01659], we presented a protocol that circumvents transmission losses with efficient use of quantum resources and modest quantum memories. Here we analyze a number of extensions to that scheme. We show that it can be operated as a truly broadband interferometer and generalized to multiple sites in the array. We also analyze how imaging based on the quantum Fourier transform provides improved signal-to-noise ratio compared to classical processing. Finally, we discuss physical realizations including photon-detection-based quantum state transfer.
@article{arxiv.1809.03396,
title = {Quantum-Assisted Telescope Arrays},
author = {Emil T. Khabiboulline and Johannes Borregaard and Kristiaan De Greve and Mikhail D. Lukin},
journal= {arXiv preprint arXiv:1809.03396},
year = {2019}
}
Comments
10 pages, 8 figures; v2 - clarifications and references; v3 - close to published version