Preparation of a Stable and Maximally Entangled State of Two Distant Qutrits Trapped in Separate Cavities

TL;DR

This paper proposes a robust scheme to entangle two distant qutrits in separate cavities using ground state encoding, avoiding coincidence detection and being resilient to detection inefficiencies.

Contribution

A novel, simple entanglement scheme for distant qutrits that enhances stability and relaxes experimental requirements compared to previous methods.

Findings

Entanglement achieved without coincidence detection.

Scheme is robust against detection inefficiencies.

Stable entanglement in Lamb-Dicke limit.

Abstract

We have proposed a simple scheme to entangle two distant qutrits trapped in separate optical cavities. The quantum information of each qutrit is skillfully encoded on the degenerate ground states of a pair of atoms, hence the entanglement between them is relatively stable against spontaneous emission. In Lamb-Dicke limits, it is not necessary to require coincidence detections, which will relax the conditions for the experimental realization. The scheme is robust against the inefficient detections.