Waks Edo, Diamanti Eleni, Sanders Barry C, Bartlett Stephen D, Yamamoto Yoshihisa
Quantum Entanglement Project, ICORP, JST, E. L. Ginzton Laboratories, Stanford University, Stanford, California 94305, USA.
Phys Rev Lett. 2004 Mar 19;92(11):113602. doi: 10.1103/PhysRevLett.92.113602.
We employ a high quantum efficiency photon number counter to determine the photon number distribution of the output field from a parametric down-converter. The raw photocount data directly demonstrates that the source is nonclassical by 40 standard deviations, and correcting for the quantum efficiency yields a direct observation of oscillations in the photon number distribution.
我们使用高量子效率的光子数计数器来确定参量下转换输出场的光子数分布。原始光计数数据直接表明该光源非经典性达40个标准差，并且对量子效率进行校正后可直接观察到光子数分布中的振荡。
