Institute for Quantum Information Science, University of Calgary, Calgary, Alberta T2N 1N4, Canada.
Opt Lett. 2009 Sep 15;34(18):2739-41. doi: 10.1364/OL.34.002739.
Heralded single photons are prepared at a rate of approximately 100 kHz via conditional measurements on polarization-nondegenerate biphotons produced in a periodically poled potassium-titanyl phosphate crystal. The single-photon Fock state is characterized using high-frequency pulsed optical homodyne tomography with a fidelity of (57.6+/-0.1)%. The state preparation and detection rates allowed us to perform on-the-fly alignment of the apparatus based on real-time analysis of the quadrature measurement statistics.
通过在周期性极化磷酸钛钾晶体中产生的偏振非简并双光子上进行条件测量，以约 100 kHz 的速率产生被宣告的单光子。使用具有（57.6+/-0.1）%保真度的高频脉冲光学零差汤姆逊成像对单光子福克态进行了特征描述。该状态的制备和检测速率使我们能够根据正交测量统计的实时分析，对仪器进行实时对准。
