Reduction of the dc electric field sensitivity of circular Rydberg states using non-resonant dressing fields

TL;DR

This paper demonstrates how non-resonant dressing fields can reduce the sensitivity of circular Rydberg states to dc electric field variations, enhancing their stability for quantum applications.

Contribution

It introduces a perturbative method to determine dressing field parameters that minimize electric field sensitivity of circular Rydberg states, highlighting the importance of field alignment.

Findings

Dressing fields can suppress second-order electric field sensitivity.

Alignment of dressing and dc fields is crucial for effectiveness.

Circular Rydberg states are more sensitive than low-angular momentum states.

Abstract

Non-resonant dressing fields can make the transition frequency between two circular Rydberg states insensitive to second order variations in the dc electric field. Perturbation theory can be used to establish the required dressing field amplitude and frequency. The same perturbative approach may be used to understand removal of the first order dependence of the transition frequency on electric field about a bias dc electric field [Hyafil et al. Phys. Rev. Lett., v. 93, 103001 (2004)]. The directional alignment of the dressing and dc fields is critical in determining the electric field sensitivity of the dressed transition frequencies. This sensitivity is significantly larger for circular Rydberg states compared to low-angular momentum Rydberg states of Rb.