Equivalence between macroscopic quantum superpositions and maximally entangled states: Application to phase-shift detection

被引：0
|
作者：
Luis, A. [1 ]
机构：
[1] Departamento de Óptica, Facultad de Ciencias Físicas, Universidad Complutense, 28040 Madrid, Spain
来源：
Physical Review A. Atomic, Molecular, and Optical Physics | 2001年 / 64卷 / 05期
关键词：
Phase measurement - Phase shift - Physical optics - Quantum cryptography;
D O I：
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摘要：
The equivalence between the superpositions of macroscopically distinct coherent states and maximally entangled states was demonstrated. The feasibility of the use of macroscopic quantum superpositions for precision measurements reaching the Heisenberg limit was demonstrated. A phase shift measurement that was based on experimental arrangement was proposed. The arrangements generating superpositions of macroscopically distinct coherent states were adapted for precision phase shift detection.
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页码：541021 / 541024
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