The collective squeezing operation for pure Gaussian states with unknown parameters

被引：0

作者：

Filip, R ^{[1
]}

Mista, L ^{[1
]}

机构：

[1] Palacky Univ, Res Ctr Opts, Dept Opt, Olomouc 77207, Czech Republic

来源：

JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS | 2003年 / 5卷 / 05期

关键词：

quantum information processing; squeezing; Gaussian states; collective operations;

D O I：

10.1088/1464-4266/5/5/302

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We suggest a continuous-variable (CV) operation that is able to perform perfectly squeezing of specific Gaussian states with unknown mean value of the single quadrature if we have two identically prepared systems in these states. Since this operation cannot be perfectly implemented using only a single copy of the state, we demonstrate the possible usefulness of the collective Gaussian operations in CV quantum information processing. Both single-mode and two-mode squeezing procedures are discussed.

引用

页码：387 / 390

页数：4

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