A new method, correlator-reuse implicit differentiation (CR-ID), derives outer-loop gradients for parametric quantum Max-Cut from measurements already collected in the inner VQE energy estimation, with almost zero additional quantum cost.
A hybrid solution method for the capacitated vehicle routing problem using a quantum annealer,
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Implicit Differentiation for Measurement-Efficient Bilevel Quantum-Classical Optimization
A new method, correlator-reuse implicit differentiation (CR-ID), derives outer-loop gradients for parametric quantum Max-Cut from measurements already collected in the inner VQE energy estimation, with almost zero additional quantum cost.