Josse V, Dantan A, Vernac L, Bramati A, Pinard M, Giacobino E
Laboratoire Kastler Brossel, Université Pierre et Marie Curie, Ecole Normale Supérieure et CNRS, Case 74, 4 place Jussieu, 75252 Paris Cedex 05, France.
Phys Rev Lett. 2003 Sep 5;91(10):103601. doi: 10.1103/PhysRevLett.91.103601. Epub 2003 Sep 2.
We study the interaction of a nearly resonant linearly polarized laser beam with a cloud of cold cesium atoms in a high finesse optical cavity. We show theoretically and experimentally that the cross-Kerr effect due to the saturation of the optical transition produces quadrature squeezing on both the mean field and the orthogonally polarized vacuum mode. An interpretation of this vacuum squeezing as polarization squeezing is given and a method for measuring quantum Stokes parameters for weak beams via a local oscillator is developed.
我们研究了高精细度光学腔中近共振线偏振激光束与冷铯原子云的相互作用。我们通过理论和实验表明，由于光学跃迁饱和导致的交叉克尔效应在平均场和正交偏振真空模式上都产生了正交压缩。给出了将这种真空压缩解释为偏振压缩的方法，并开发了一种通过本地振荡器测量弱光束量子斯托克斯参数的方法。
