Multiphoton absorption cross section and virtual-state spectroscopy for the entangled n-photon state
Multiphoton absorption cross section and virtual-state spectroscopy for the entangled n-photon state
复制标题
纠缠 n 光子态的多光子吸收截面和虚态光谱
DOI：
10.1103/physreva.57.3972
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发表时间：
1998
影响因子：
2.9
通讯作者：
M. Teich
中科院分区：
文献类型：
--
作者：
J. Peřina;B. Saleh;M. Teich
利用微观理论，我们确定了由自发n光子参数下转换的非线性过程和具有双光子参数下转换的N21晶体级联中产生的纠缠n光子态。还得到了纠缠n光子吸收截面的表达式。吸收截面与光子通量密度呈线性关系，并依赖于表征光子的纠缠时间。讨论了光束中相对光程延迟的影响。它形成了从作为路径延迟的函数测量的吸收截面中提取相互作用所涉及的状态之间的四极矩的基础。讨论了与纠缠三光子吸收竞争的效应。@S10502947~9806305-7#
Using a microscopic theory, we determine the entangled n-photon state generated both by the nonlinear process of spontaneous n-photon parametric down-conversion and in a cascade of n21 crystals with twophoton parametric down-conversions. Expressions for the entangled n-photon absorption cross sections are also obtained. The absorption cross sections exhibit a linear dependence on the photon flux density, and depend on the entanglement times characterizing photons. The effect of relative path delay in the beams is discussed. It forms the basis for extracting the quadrupole moments between states involved in the interaction from the absorption cross section measured as a function of path delay. Effects competitive with entangled three-photon absorption are discussed. @S1050-2947~98!06305-7#