Josse V, Dantan A, Bramati A, Pinard M, Giacobino E
Laboratoire Kastler Brossel, Université Pierre et Marie Curie, Case 74, 4 place Jussieu, 75252 Paris CEDEX 05, France.
Phys Rev Lett. 2004 Mar 26;92(12):123601. doi: 10.1103/PhysRevLett.92.123601. Epub 2004 Mar 22.
We present an experimental demonstration of both quadrature and polarization entanglement generated via the interaction between a coherent linearly polarized field and cold atoms in a high finesse optical cavity. The nonlinear atom-field interaction produces two squeezed modes with orthogonal polarizations which are used to generate a pair of nonseparable beams, the entanglement of which is demonstrated by checking the inseparability criterion for continuous variables recently derived by Duan et al. [Phys. Rev. Lett. 84, 2722 (2000)]] and calculating the entanglement of formation [Phys. Rev. Lett. 91, 107901 (2003)]].
我们展示了通过高精细度光学腔中相干线偏振场与冷原子之间的相互作用产生的正交和偏振纠缠的实验演示。非线性原子 - 场相互作用产生了两个具有正交偏振的压缩模式，用于生成一对不可分离的光束，通过检查段等人最近推导的连续变量不可分离性标准[《物理评论快报》84, 2722 (2000)]以及计算形成纠缠[《物理评论快报》91, 107901 (2003)]来证明其纠缠。
