Engineering Graph States of Atomic Ensembles by Photon-Mediated Entanglement
Abstract
Graph states are versatile resources for quantum computation and quantum-enhanced measurement. Their generation illustrates a high level of control over entanglement. We report on the generation of continuous-variable graph states of atomic spin ensembles, which form the nodes of the graph. The edges represent the entanglement structure, which we program by combining global photon-mediated interactions in an optical cavity with local spin rotations. By tuning the entanglement between two subsystems, we either localize correlations within each subsystem or enable Einstein-Podolsky-Rosen steering. We further engineer a four-mode square graph state, highlighting the flexibility of our approach. Our method is scalable to larger and more complex graphs, laying groundwork for measurement-based quantum computation and advanced protocols in quantum metrology.
Keywords
Cite
@article{arxiv.2212.11961,
title = {Engineering Graph States of Atomic Ensembles by Photon-Mediated Entanglement},
author = {Eric S. Cooper and Philipp Kunkel and Avikar Periwal and Monika Schleier-Smith},
journal= {arXiv preprint arXiv:2212.11961},
year = {2024}
}