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  • RESEARCH BRIEFINGS

Quantum entanglement as a tool to image distant astronomical objects

Particles entangled over long distances can, in theory, improve the sensitivity of long-baseline interferometers that are observing weak thermal light sources. A proof-of-concept experiment now demonstrates entanglement-assisted interferometry, paving the way for entanglement-enhanced non‑local sensing techniques.

This is a summary of: Stas, P.-J. et al. Entanglement-assisted non-local optical interferometry in a quantum network. Nature 651, 326–332 (2026).

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doi: https://doi.org/10.1038/d41586-026-00724-4

‘Expert opinion’ is published under a CC BY 4.0 licence and Figure 1 is published under a CC BY-NC-ND 4.0 licence.

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