Rotation of the noise ellipse for squeezed vacuum light generated via four-wave mixing

被引：26
|
作者：
Corzo, Neil V. [1 ,2 ,3 ]
Glorieux, Quentin [1 ,2 ,4 ]
Marino, Alberto M. [5 ]
Clark, Jeremy B. [1 ,2 ]
Glasser, Ryan T. [1 ,2 ]
Lett, Paul D. [1 ,2 ]
机构：
[1] NIST, Joint Quantum Inst, Gaithersburg, MD 20899 USA
[2] Univ Maryland, Gaithersburg, MD 20899 USA
[3] Northwestern Univ, Dept EECS, Ctr Photon Commun & Comp, Evanston, IL 60208 USA
[4] Univ Geneva, Appl Phys Grp, CH-1211 Geneva, Switzerland
[5] Univ Oklahoma, Dept Phys & Astron, Homer L Dodge Dept, Norman, OK 73019 USA
来源：
PHYSICAL REVIEW A | 2013年 / 88卷 / 04期
基金：
美国国家科学基金会;
关键词：
QUANTUM LIMITS; STATES;
D O I：
10.1103/PhysRevA.88.043836
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the generation of a squeezed vacuum state of light whose noise ellipse rotates as a function of the detection frequency. The squeezed state is generated via a four-wave mixing process in a vapor of Rb-85. We observe that rotation varies with experimental parameters such as pump power and laser detunings. We use a theoretical model based on the Heisenberg-Langevin formalism to describe this effect. Our model can be used to investigate the parameter space and potentially to tailor the ellipse rotation in order to obtain an optimum squeezing angle, for example, for coupling to an interferometer whose optimal noise quadrature varies with frequency.
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页数：8
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