Abstract
Abstract
Quantum optimal control theory is becoming increasingly crucial as quantum devices become more precise, but the need to quickly optimize these systems classically remains a significant bottleneck in their operation. Here we present a new theoretical quantum control framework for much faster optimization than the state of the art by replacing standard time propagation with a product of short-time propagators, each calculated using the Magnus expansion. The derived formulas for exact series terms and their gradients, based on earlier approximate integrals in a simulation setting, allow us to subsume the high cost of calculating commutators and integrals as an initial overhead. This provides an order of magnitude speedup for quantum control optimization.
Funder
Centre for Scientific Computing, Aarhus
European Union
Germany’s Excellence Strategy
the Carlsberg Foundation, the Deutsche Forschungsgemeinschaft
Subject
Condensed Matter Physics,Atomic and Molecular Physics, and Optics
Cited by
7 articles.
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