A size criterion for macroscopic superposition states

被引：58
|
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.
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页码：429 / 436
页数：8
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