An efficient and long-lived quantum memory for quantum repeater

• 来源期刊: 中国科学基金（英文版）
• 年，卷（期）: 2016,（4）
• 页码范围: 39
• 页数: 1页
• 语种: 英文

摘要

A research team led by Prof.Pan Jianwei (潘建伟) and Prof.Bao Xiaohui (包小辉) at the University of Science and Technology of China,reported the successful realization of an efficient quantum light-matter interface with sub-second lifetime,which can be used as an elementary unit to extend the distance of quantum communication through quantum repeater.This result was recently published in Nature Photonics (2016,10:381-384). Towards a first quantum repeater based on memory-photon entanglement,significant progress has been made in improving performances of the building blocks.Further development is hindered by the difficulty of integrating key capabilities such as long storage time and high memory efficiency into a single system.Given a threshold efficiency of 50％,the longest storage time reported previously is merely limited to 1.2 ms,which is far away from the second regime requirement of quantum repeater.