Coherent excitation of three-atom entangled states near a two-body F\"orster resonance

TL;DR

This paper experimentally investigates three-atom entangled states near a F"orster resonance, demonstrating controlled three-body energy exchange and coherence, which could enable robust three-body entangling operations.

Contribution

It introduces a method to coherently excite and control three-atom entangled states near a F"orster resonance, advancing quantum entanglement techniques.

Findings

Controlled three-body energy exchange demonstrated

Coherence of three-atom entangled states confirmed

Potential for robust three-body entangling operations

Abstract

We experimentally study three-body energy exchange during Rydberg excitation near a two-body F\"orster resonance. By varying the excitation pulse duration or Rabi frequency, we control the process that causes the exchange. We demonstrate the coherence of excitation to three-atom entangled states using an optical rotary echo technique, and compare with a model for excitation in a three-atom basis. Our results suggest a robust way to implement a three-body entangling operation.