Quantum repeater without Bell measurements in double-quantum-dot systems

被引：0
|
作者：
Xiao-Feng Yi
Peng Xu
Qi Yao
Xianfu Quan
机构：
[1] Wuhan University,School of Physics and Technology
[2] Chinese Academy of Sciences,State key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics
[3] University of Chinese Academy of Sciences,undefined
来源：
Quantum Information Processing | 2019年 / 18卷
关键词：
Entanglement swapping; DLCZ protocol; Double quantum dot; Quantum repeater;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We propose a Bell measurement-free scheme to implement a quantum repeater in GaAs/AlGaAs double-quantum-dot systems. We prove that four pairs of double quantum dots compose an entanglement unit, given that the initial state is singlet states. Our scheme differs from the famous Duan–Lukin–Cirac–Zoller (DLCZ) protocol in that Bell measurements are unnecessary for the entanglement swapping, which provides great advantages and conveniences in experimental implementations. Our scheme significantly improves the success probability of quantum repeaters based on solid-state quantum devices.
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