We present a multiplexed quantum repeater protocol based on an ensemble of laser-cooled and trapped rubidium atoms inside an optical ring cavity. We have already demonstrated strong collective coupling in such a system and have constructed a multiplexing apparatus based on a two-dimensional acousto-optical deflector. Here, we show how this system could enable a multiplexed quantum repeater using collective excitations with non-trivial spatial phase profiles (spinwaves). Calculated entanglement generation rates over long distances reveal that such a multiplexed ensemble-cavity platform is a promising route towards long distance quantum entanglement and networking.
@article{arxiv.1903.02625,
title = {Spatial Multiplexing in a Cavity-Enhanced Quantum Memory},
author = {Paul D. Kunz and Siddhartha Santra and David H. Meyer and Zachary A. Castillo and Vladimir S. Malinovsky and Kevin C. Cox},
journal= {arXiv preprint arXiv:1903.02625},
year = {2019}
}