Guzmán R, Retamal J C, Solano E, Zagury N
Departamento de Física, Universidad de Santiago de Chile, Casilla 307, Correo 2, Santiago, Chile.
Phys Rev Lett. 2006 Jan 13;96(1):010502. doi: 10.1103/PhysRevLett.96.010502. Epub 2006 Jan 3.
We propose a method of generating unitarily single and two-mode field squeezing in an optical cavity with an atomic cloud. Through a suitable laser system, we are able to engineer a squeeze field operator decoupled from the atomic degrees of freedom, yielding a large squeeze parameter that is scaled up by the number of atoms, and realizing degenerate and nondegenerate parametric amplification. By means of the input-output theory we show that ideal squeezed states and perfect squeezing could be approached at the output. The scheme is robust to decoherence processes.
我们提出了一种在具有原子云的光学腔中产生单模和双模场幺正压缩的方法。通过合适的激光系统，我们能够设计出一个与原子自由度解耦的压缩场算符，得到一个由原子数放大的大压缩参数，并实现简并和非简并参量放大。借助输入-输出理论，我们表明在输出端可以接近理想的压缩态和完美压缩。该方案对退相干过程具有鲁棒性。
