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A dilution refrigerator's nested cryostat stages hanging open on a service hoist in a quantum-computing hall, gold-plated copper plates exposed with coaxial-line looms threaded between them before the outer shield is lowered

Variational Evolution: How Quantum Computers Learn Their Answers

Today's quantum processors run a classical optimizer breeding parametrized circuits against a quantum-measured fitness score — literally evolutionary computation, complete with its own failure mode: a fitness landscape that goes flat as the circuit grows.

By Brecht Corbeel · August 31, 2026 · 20 min read

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