Temperature dependence of a warm ensemble based memory on quantum communication rates
Abstract
The success of long-distance quantum communication will hinge on quantum repeater nodes equipped with robust and scalable quantum memories. Such memories must possess specific operating characteristics to make these nodes practical. An attractive option for these memory devices is an atomic warm vapor system operating under the conditions of electromagnetically induced transparency (EIT). These systems are easy to implement and require relatively low equipment overhead. A key metric in atomic-based quantum memory performance is optical depth, as it is closely tied to the strength of light-matter coupling. Here, we simulate and measure the optical depth-based performance of an EIT quantum memory using a warm atomic vapor cell. We then translate the simulated and measured optical depth and efficiency metrics into expected entanglement distribution rates. Our analysis evaluates the feasibility of these memories in optical quantum repeater nodes, which are essential for robust long-distance quantum communication.
Versions
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BibTeX
@misc{gregory2026temperature,
title = {{Temperature dependence of a warm ensemble based memory on quantum communication rates}},
author = {Kenny Gregory and Khaled Mnaymneh and Connor Kupchak and Andrew MacRae},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.23536},
eprint = {2610.23536},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.23536},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Temperature dependence of a warm ensemble based memory on quantum communication rates
AU - Kenny Gregory
AU - Khaled Mnaymneh
AU - Connor Kupchak
AU - Andrew MacRae
PY - 2026
DA - 2026/10/16
PB - arXiv
DO - 10.48550/arxiv.2610.23536
UR - https://arxiv.org/abs/2610.23536
AB - The success of long-distance quantum communication will hinge on quantum repeater nodes equipped with robust and scalable quantum memories. Such memories must possess specific operating characteristics to make these nodes practical. An attractive option for these memory devices is an atomic warm vapor system operating under the conditions of electromagnetically induced transparency (EIT). These systems are easy to implement and require relatively low equipment overhead. A key metric in atomic-based quantum memory performance is optical depth, as it is closely tied to the strength of light-matter coupling. Here, we simulate and measure the optical depth-based performance of an EIT quantum memory using a warm atomic vapor cell. We then translate the simulated and measured optical depth and efficiency metrics into expected entanglement distribution rates. Our analysis evaluates the feasibility of these memories in optical quantum repeater nodes, which are essential for robust long-distance quantum communication.
ER -