Fault-tolerant quantum repeater with atomic ensembles and linear optics

作者：Chen Zeng Bing^*; Zhao Bo; Chen Yu Ao; Schmiedmayer Joerg; Pan Jian Wei

来源：Physical Review A, 2007, 76(2): 022329.

DOI：10.1103/PhysRevA.76.022329

We present a detailed analysis of a robust quantum repeater architecture building on the original Duan-Lukin-Cirac-Zoller (DLCZ) protocol [L.M. Duan Nature (London) 414, 413 (2001)]. The architecture is based on two-photon Hong-Ou-Mandel-type interference which relaxes the long-distance interferometric stability requirements by about seven orders of magnitude, from subwavelength for the single photon interference required by DLCZ to the coherence length of the photons, thereby removing the weakest point in the DLCZ scheme. Our proposal provides an exciting possibility for robust and realistic long-distance quantum communication.

• 出版日期2007-8
• 单位中国科学技术大学