A size criterion for macroscopic superposition states

被引：60

作者：

Björk, G ^{[1
]}

Mana, PGL ^{[1
]}

机构：

[1] Royal Inst Technol, KTH, Dept Microelect & Informat Technol, SE-16440 Kista, Sweden

来源：

JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS | 2004年 / 6卷 / 11期

关键词：

macroscopic superpositions; Schrodinger cat states; interference; disconnectivity;

D O I：

10.1088/1464-4266/6/11/001

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An operational measure to quantify the sizes of some 'macroscopic quantum superpositions', realized in recent experiments, is proposed. The measure is based on the fact that a superposition presents greater sensitivity in interferometric applications than its superposed constituent states. This enhanced sensitivity, or 'interference utility', may then be used as a size criterion among superpositions.

引用

页码：429 / 436

页数：8

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