Distribution of light-matter quantum correlations with a temporally multiplexed solid-state quantum memory array
Abstract
Multiplexed quantum memories increase the entanglement distribution rate in long-distance quantum repeater architectures by harnessing storage in several degrees of freedom. Here, we report on the distribution of light-matter quantum correlations using an array of time-multiplexed solid-state quantum memories. We store telecom-heralded single photons sequentially in up to ten memory cells using the full atomic frequency comb protocol with on-demand read-out in a Pr3+:Y2SiO5 crystal. Leveraging both spatial and temporal multiplexing, we demonstrate quantum correlations between the telecom photon and up to 60 spatio-temporal modes of the quantum memory array. We then transmit the heralding telecom photon over 39.1 km of deployed optical fiber in the Metropolitan Area of Barcelona. In a realistic scenario where the generation rate is limited by the two-way communication time, we show that up to 15 % of the $393 μs$ round-trip communication time is filled with communication trials, leading to a 60-fold enhancement in the rate of detected telecom photons correlated with the quantum memory array, compared to a single-mode memory. With increased storage times and efficiencies, our multiplexed quantum memory array will constitute the backbone of a long-distance quantum network, establishing remote entanglement at high rates.
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BibTeX
@misc{mneimneh2026distribution,
title = {{Distribution of light-matter quantum correlations with a temporally multiplexed solid-state quantum memory array}},
author = {Aya Mneimneh and Susana Plascencia and Manuel Gundin and Jonathan Hänni and Samuele Grandi and Markus Teller and Hugues de Riedmatten},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.15689},
eprint = {2609.15689},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.15689},
}
RIS
TY - UNPB
TI - Distribution of light-matter quantum correlations with a temporally multiplexed solid-state quantum memory array
AU - Aya Mneimneh
AU - Susana Plascencia
AU - Manuel Gundin
AU - Jonathan Hänni
AU - Samuele Grandi
AU - Markus Teller
AU - Hugues de Riedmatten
PY - 2026
DA - 2026/09/14
PB - arXiv
DO - 10.48550/arxiv.2609.15689
UR - https://arxiv.org/abs/2609.15689
AB - Multiplexed quantum memories increase the entanglement distribution rate in long-distance quantum repeater architectures by harnessing storage in several degrees of freedom. Here, we report on the distribution of light-matter quantum correlations using an array of time-multiplexed solid-state quantum memories. We store telecom-heralded single photons sequentially in up to ten memory cells using the full atomic frequency comb protocol with on-demand read-out in a Pr^3+:Y_2SiO_5 crystal. Leveraging both spatial and temporal multiplexing, we demonstrate quantum correlations between the telecom photon and up to 60 spatio-temporal modes of the quantum memory array. We then transmit the heralding telecom photon over 39.1 km of deployed optical fiber in the Metropolitan Area of Barcelona. In a realistic scenario where the generation rate is limited by the two-way communication time, we show that up to 15 % of the $393 μs$ round-trip communication time is filled with communication trials, leading to a 60-fold enhancement in the rate of detected telecom photons correlated with the quantum memory array, compared to a single-mode memory. With increased storage times and efficiencies, our multiplexed quantum memory array will constitute the backbone of a long-distance quantum network, establishing remote entanglement at high rates.
ER -