Quantized fields for optimal control in the strong coupling regime

TL;DR

This paper develops a method to tailor quantum states of bosonic fields for deterministic control of quantum systems, effective even in strong coupling regimes beyond the rotating-wave approximation, thus extending optimal control theory.

Contribution

It introduces a novel approach to quantum control using quantized fields in strong coupling regimes, expanding the applicability of optimal control theory.

Findings

Achieves deterministic control of quantum systems using tailored bosonic fields.

Effective control demonstrated beyond the rotating-wave approximation.

Extends optimal control theory to fully quantized, strongly coupled systems.

Abstract

We tailor the quantum statistics of a bosonic field to deterministically drive a quantum system into a target state. Experimentally accessible states of the field achieve good control of multi-level or -qubit systems, notably also at coupling strengths beyond the rotating-wave approximation. This extends optimal control theory to the realm of fully quantized, strongly coupled control and target degrees of freedom.