Coherent-state phase concentration by quantum probabilistic amplification

被引：82

作者：

Marek, Petr ^{[1
]}

Filip, Radim ^{[1
]}

机构：

[1] Palacky Univ, Dept Opt, CZ-77146 Olomouc, Czech Republic

来源：

PHYSICAL REVIEW A | 2010年 / 81卷 / 02期

关键词：

PHOTONS; NOISE;

D O I：

10.1103/PhysRevA.81.022302

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a probabilistic measurement-induced amplification for coherent states. The amplification scheme uses a counterintuitive architecture: a thermal noise addition (instead of a single-photon addition) followed by a feasible multiple-photon subtraction using a realistic photon-number-resolving detector. It allows one to substantially amplify weak coherent states and simultaneously reduce their phase uncertainty, which is impossible when using a deterministic Gaussian amplifier.

引用

页数：5

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