Addressing Two-Level Systems Variably Coupled to an Oscillating Field

TL;DR

This paper introduces a method for spectrally resolving and addressing individual spins in a cold atomic system using a spatially-dependent dressing field, demonstrated experimentally with trapped ions.

Contribution

It presents a novel approach for single-spin addressing via a spatially-dependent dressing field, enabling precise control in cold atomic systems.

Findings

Successful experimental implementation with trapped ions.

Spectral resolution of single spins achieved.

Potential applications in quantum information processing.

Abstract

We propose a simple method to spectrally resolve single-spins in a cold atomic system, thus realizing single-spin addressing. This scheme uses a dressing field with a spatially-dependent coupling to the atoms. We realize this scheme experimentally using a linear chain of trapped ions that are separated by $\sim3$ $\mu$m, dressed by a laser field that is resonant with the micromotion sideband of a narrow optical transition.