Efficient single-photon frequency upconversion at 1.06 μm with ultralow background counts
Efficient single-photon frequency upconversion at 1.06 μm with ultralow background counts
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DOI：
10.1063/1.2968311
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发表时间：
2008-08
影响因子：
4
通讯作者：
H. Dong;H. Pan;Y. Li;E. Wu;H. Zeng
中科院分区：
文献类型：
--
作者：
H. Dong;H. Pan;Y. Li;E. Wu;H. Zeng
我们展示了一种高效的单光子频率上转换系统，用于1.06μm的超低本底计数的红外光子。通过在比单光子信号波长更长的波长泵浦系统，非线性晶体中由泵浦诱导的参量荧光引起的本底计数显著减少。到目前为止，我们获得了∼150/S的最低噪声，获得了接近单位的转换效率。我们展示了一种高效的单光子上转换系统，用于1.06μm的红外光子的超低本底计数。通过在比单光子信号波长更长的波长泵浦系统，非线性晶体中由泵浦诱导的参量荧光引起的本底计数显著减少。到目前为止，我们实现了∼150/S的最低噪声，转换效率接近单位。
We demonstrated an efficient single-photon frequency upconversion system for the infrared photons at 1.06 μm with ultralow background counts. By pumping the system at a longer wavelength than that of the single-photon signal, the background counts caused by the pump-induced parametric fluorescence in the nonlinear crystal were reduced markedly. We achieved so far the lowest noise of ∼150/s for a near unity conversion efficiency.We demonstrated an efficient single-photon frequency upconversion system for the infrared photons at 1.06 μm with ultralow background counts. By pumping the system at a longer wavelength than that of the single-photon signal, the background counts caused by the pump-induced parametric fluorescence in the nonlinear crystal were reduced markedly. We achieved so far the lowest noise of ∼150/s for a near unity conversion efficiency.