Amplification of quantum entanglement

被引：90

作者：

De Martini, F ^{[1
]}

机构：

[1] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[2] Univ Roma La Sapienza, Ist Nazl Fis Mat, I-00185 Rome, Italy

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.81.2842

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The new process of quantum injection into an optical parametric amplifier operating in entangled configuration is adopted to "amplify" into a large dimensionality spin-1/2 Hilbert space the quantum entanglement and superposition properties of the photon couples generated by parametric down-conversion. The structure of the Wigner function and of the field's correlation functions shows a decoherence-free multiphoton Schroedinger-cat behavior of the emitted field which is largely detectable against the squeezed-vacuum noise.

引用

页码：2842 / 2845

页数：4

共 37 条

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