Narrow-band frequency tunable light source of continuous quadrature entanglement

被引：111

作者：

Schori, C ^{[1
]}

Sorensen, JL ^{[1
]}

Polzik, ES ^{[1
]}

机构：

[1] Univ Aarhus, Inst Phys & Astron, QUANTOP, Danish Natl Res Fdn Ctr Quantum Opt, DK-8000 Aarhus, Denmark

来源：

PHYSICAL REVIEW A | 2002年 / 66卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.66.033802

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report the observation of nonclassical quantum correlations of continuous light variables from an altogether different type of source. It is a frequency nondegenerate optical parametric oscillator below threshold, where signal and idler fields are separated by 740 MHz corresponding to two free spectrum ranges of the parametric oscillator cavity. The degree of entanglement observed, -3.8 dB, is the highest to date for a narrow-band tunable source suitable for atomic quantum memory and other applications in atomic physics. Finally we use the latter to visualize the Einstein-Podolsky-Rosen paradox.

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页数：10

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