Experimental demonstration of memory-enhanced scaling for entanglement connection of quantum repeater segments
Abstract
The quantum repeater protocol is a promising approach to implement long-distance quantum communication and large-scale quantum networks. A key idea of the quantum repeater protocol is to use long-lived quantum memories to achieve efficient entanglement connection between different repeater segments with a polynomial scaling. Here we report an experiment which realizes efficient connection of two quantum repeater segments via on-demand entanglement swapping by the use of two atomic quantum memories with storage time of tens of milliseconds. With the memory enhancement, scaling-changing acceleration is demonstrated in the rate for a successful entanglement connection. The experimental realization of entanglement connection of two quantum repeater segments with an efficient memory-enhanced scaling demonstrates a key advantage of the quantum repeater protocol, which makes a cornerstone towards future large-scale quantum networks.
Keywords
Cite
@article{arxiv.2101.08541,
title = {Experimental demonstration of memory-enhanced scaling for entanglement connection of quantum repeater segments},
author = {Yunfei Pu and Sheng Zhang and Yukai Wu and Nan Jiang and Wei Chang and Chang Li and Luming Duan},
journal= {arXiv preprint arXiv:2101.08541},
year = {2022}
}