aiqbench takeQuantum Computing

Researchers have successfully applied batched gradient descent on GPUs to optimize Bell inequalities for systems with over a thousand inputs, overcoming previous computational limits that stalled around twelve variables. This advancement significantly accelerates the analysis of quantum correlations, enabling faster modeling of realistic experimental setups and advancing research in secure communication protocols.

Source coveringQuantum Zeitgeist

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Researchers Optimise Quantum Values with Batched Gradient Descent

Quantum ZeitgeistOctober 2, 20264 min read

Optimizing Bell inequalities previously stalled at around twelve inputs/outputs; calculations rapidly became intractable. Now, utilising batched gradient descent implemented on graphics processing units, complex quantum values are attainable within minutes even when exceeding one thousand inputs or outputs. This leap enables modelling of realistic experimental setups and expands potential applications in areas like secure communication and coordinated control systems.

A new batched gradient descent (BGD) optimiser now enables calculations for Bell inequalities containing over one thousand inputs or outputs within minutes, sharply exceeding the capabilities of previous methods which struggled with even a dozen. An improved computational method analyses Bell inequalities, mathematical expressions defining limits on correlations in quantum physics. Existing techniques struggled when dealing with moderately complicated examples containing numerous variables, but this approach utilises batched gradient…

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