2018/09/05 by Emil T. Khabiboulline, Johannes Borregaard, Kristiaan De Greve +2 · 1 voice · 2 citations
Computer Science · Engineering · Physics and Astronomy · #Astronomical interferometer #Computer science #Interferometry #Optical Network Technologies #Optics #Photon #Photonic and Optical Devices #Physics #Quantum #Quantum Information and Cryptography #Quantum entanglement #Quantum imaging #Quantum key distribution #Quantum mechanics #Quantum network #Qubit #astro-ph.IM #quant-ph
paper · pdf · doi:10.1103/physrevlett.123.070504
published as Phys. Rev. Lett. 123, 070504 (2019) · 7 + 6 pages, 3 + 1 figures; v2 - clarifications and further discussion of implementation; v3 - close to published version
arxiv published 2018/09/05 · openalex publication_date 2019/08/15 · arxiv created 2019/08/28 · arxiv updated 2019/08/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We propose a method for optical interferometry in telescope arrays assisted by quantum networks. In our approach, the quantum state of incoming photons along with an arrival time index are stored in a binary qubit code at each receiver. Nonlocal retrieval of the quantum state via entanglement-assisted parity checks at the expected photon arrival rate allows for direct extraction of the phase difference, effectively circumventing transmission losses between nodes. Compared to prior proposals, our scheme (based on efficient quantum data compression) offers an exponential decrease in required entanglement bandwidth. Experimental implementation is then feasible with near-term technology, enabling optical imaging of astronomical objects akin to well-established radio interferometers and pushing resolution beyond what is practically achievable classically.