Squeezed coherent state undergoing a continuous nondemolition observation

被引：1

作者：

Dabrowska, Anita ^{[1
]}

Staszewski, Przemyslaw ^{[1
]}

机构：

[1] Nicolaus Copernicus Univ, Coll Med, Dept Theoret Fdn Biomed Sci & Med Informat, PL-85067 Bydgoszcz, Poland

来源：

PHYSICS LETTERS A | 2011年 / 375卷 / 45期

关键词：

Nondemolition quantum measurements; Quantum filtration; Heterodyne measurement; Squeezed coherent state; QUANTUM PARTICLE; MECHANICS; EQUATION;

D O I：

10.1016/j.physleta.2011.09.041

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The time evolution of a squeezed coherent state conditioned by the results of a single and double heterodyne measurement is discussed. The mean values of quadratures as well as the dynamics of quadrature uncertainties have been obtained within the framework of the theory of continuous measurements based on filtration equations. It has been found that while the mean values depend on the measured noise, the uncertainties in the optical quadratures are deterministic. Explicit solutions for the latter have been provided. Finally, a time development of the squeeze parameter for the posterior squeezed coherent state has been found. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：3950 / 3955

页数：6

共 22 条

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[2]

Barchielli A, 2009, LECT NOTES PHYS, V782, P1, DOI 10.1007/978-3-642-01298-3

[3] MEASUREMENTS CONTINUOUS IN TIME AND A-POSTERIORI STATES IN QUANTUM-MECHANICS [J].