Improving noiseless linear amplification for optical quantum communication with quadrature squeezing

被引：20
|
作者：
Yang, Song [1 ]
Zhang, ShengLi [2 ]
Zou, XuBo [2 ]
Bi, SiWen [1 ]
Lin, XuLing [1 ]
机构：
[1] Beijing Inst Space Mech & Elect, Beijing 100076, Peoples R China
[2] Univ Sci & Technol China CAS, Key Lab Quantum Informat, Hefei 230026, Peoples R China
来源：
PHYSICAL REVIEW A | 2013年 / 87卷 / 02期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1103/PhysRevA.87.024302
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Quantum noiseless linear amplification (NLA) is an important tool for long-distance optical quantum communication. In this paper, we show that NLA with linear optics and photon counts can be further improved by applying quadrature squeezing. Moreover, we find that such enhancement through squeezing can be observed even when a photon dichotic on-off detector and a pseudo-single-photon state are applied to the amplification process. Such a result could find more applications in already-known NLA-related quantum information tasks. DOI: 10.1103/PhysRevA.87.024302
引用
收藏
页数：5
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