Jasperse M, Turner L D, Scholten R E
ARC Centre of Excellence for Coherent X-Ray Science, University of Melbourne, VIC 3010, Australia.
Opt Express. 2011 Feb 14;19(4):3765-74. doi: 10.1364/OE.19.003765.
Four-wave mixing near resonance in an atomic vapor can produce relative intensity squeezed light suitable for precision measurements beyond the shot-noise limit. We develop an analytic distributed gain/loss model to describe the competition of mixing and absorption through the non-linear medium. Using a novel matrix calculus, we present closed-form expressions for the degree of relative intensity squeezing produced by this system. We use these theoretical results to analyze experimentally measured squeezing from a 85Rb vapor and demonstrate the analytic model's utility as an experimental diagnostic.
原子蒸气中近共振的四波混频可以产生相对强度压缩光，适用于超出散粒噪声极限的精密测量。我们开发了一种解析分布式增益/损耗模型，以描述通过非线性介质的混频和吸收之间的竞争。使用一种新颖的矩阵演算，我们给出了该系统产生的相对强度压缩程度的闭式表达式。我们利用这些理论结果来分析从85Rb蒸气中实验测量得到的压缩，并证明解析模型作为实验诊断工具的实用性。
