Generating optical Schrodinger kittens for quantum information processing

被引：723

作者：

Ourjoumtsev, A ^{[1
]}

Tualle-Brouri, R ^{[1
]}

Laurat, J ^{[1
]}

Grangier, P ^{[1
]}

机构：

[1] CNRS, Unite Mixte Rech 8501, Lab Charles Fabry, F-91403 Orsay, France

来源：

SCIENCE | 2006年 / 312卷 / 5770期

关键词：

D O I：

10.1126/science.1122858

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We present a detailed experimental analysis of a free-propagating light pulse prepared in a "Schrodinger kitten'' state, which is defined as a quantum superposition of "classical'' coherent states with small amplitudes. This kitten state is generated by subtracting one photon from a squeezed vacuum beam, and it clearly presents a negative Wigner function. The predicted influence of the experimental parameters is in excellent agreement with the experimental results. The amplitude of the coherent states can be amplified to transform our "Schrodinger kittens'' into bigger Schrodinger cats, providing an essential tool for quantum information processing.

引用

页码：83 / 86

页数：4

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