Entanglement of two individual atoms using the Rydberg blockade

TL;DR

This paper demonstrates the creation of entanglement between two individual rubidium atoms using the Rydberg blockade mechanism, highlighting advances in atomic manipulation and entanglement measurement techniques.

Contribution

It reports the first experimental realization of entangling two single atoms in optical tweezers via Rydberg blockade with high-fidelity internal state control.

Findings

Successful generation of entangled atomic states

High-fidelity internal state rotations achieved

Quantitative measurement of entanglement degree

Abstract

We report on our recent progress on the manipulation of single rubidium atoms trapped in optical tweezers and the generation of entanglement between two atoms, each individually trapped in neighboring tweezers. To create an entangled state of two atoms in their ground states, we make use of the Rydberg blockade mechanism. The degree of entanglement is measured using global rotations of the internal states of both atoms. Such internal state rotations on a single atom are demonstrated with a high fidelity.