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This research demonstrates how entangled photons can significantly outperform conventional optical interferometry in multi-telescope arrays, achieving imaging accuracy within 7% of fundamental limits. By extending quantum advantages to M-station networks beyond 20km, the study offers a practical pathway for high-resolution astronomy that overcomes traditional distance constraints.

Surse care acoperăQuantum Zeitgeist, Latent Space, Slack Blog, Proton Blog

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Researchers Bound Extended Source Imaging Error by 74%

Quantum Zeitgeist30 septembrie 20266 min de cititArticolul și perspectiva sunt în engleză.

A weighted variance just 7% from fundamental limits demonstrates how entangled photons can dramatically outperform conventional optical interferometry. Previously restricted to single or dual telescopes, this work extends that advantage to M-station arrays, achieving roughly ten times better performance than standard beam splitters. Beyond approximately 20km, repeater-distributed entanglement surpasses direct transmission for realistic observational parameters.

A fidelity of approximately 74 percent marks an improvement in imaging accuracy using entangled photons. Optical interferometry previously struggled with limitations when light could not be physically combined across large distances; however, quantum estimation for multi-parameter imaging with M-station arrays has been formulated by Astrophotonics (innoFSPEC) and collaborating institutions. This new approach reduces complex calculations to estimating the quantum Fisher Information of a single photon, restoring information lost due to detection constraints. Entanglement between telescopes recovers information lost when combining light from distant locations. The team at Array of Georgia State University and The University of Sheffield has formulated a method to calculate how much quantum entanglement improves imaging across multiple telescope stations, an ‘array’,…

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