Control of noisy quantum systems: Field-theory approach to error mitigation
Control of noisy quantum systems: Field-theory approach to error mitigation
We consider the basic quantum-control task of obtaining a target unitary operation (i.e., a quantum gate) via control fields that couple to the quantum system and are chosen to best mitigate errors resulting from time-dependent noise, which frustrate this task. We allow for two sources of noise: fluctuations in the …