Speeding up adiabatic quantum state transfer by using dressed states

TL;DR

This paper introduces a method to accelerate adiabatic quantum state transfer by designing dressed states through control Hamiltonian corrections, enabling faster protocols with minimized intermediate state occupation.

Contribution

The authors develop a novel dressed state approach that enhances the speed of adiabatic transfer protocols without extra couplings or increased intermediate state occupancy.

Findings

Significantly faster adiabatic transfer protocols achieved.

Dressed states enable exact following during transfer.

Minimized intermediate state occupation in fast protocols.

Abstract

We develop new pulse schemes to significantly speed up adiabatic state transfer protocols. Our general strategy involves adding corrections to an initial control Hamiltonian which harness non-adiabatic transitions. These corrections define a set of dressed states that the system follows exactly during the state transfer. We apply this approach to STIRAP protocols and show that a suitable choice of dressed states allows one to design fast protocols that do not require additional couplings, while simultaneously minimizing the occupancy of the "intermediate" level.