We study the intensity-intensity correlations of the radiation emitted on probe transition in a three level cascade electromagnetically induced transparency (EIT) scheme. By applying an incoherent pump, we also monitor further changes in the characteristics of the emitted radiation. It is found that application of even a very weak incoherent pump can significantly alter the characteristics of the emitted radiation, even though the EIT characteristics remain unaltered. Our study demonstrates that for certain range of parameter values, the two photon correlation function in the probe transition oscillates between classical and non-classical domains.
One knob to tune them all: Phase-controlled photon statistics and linewidth in partially pumped atomic ensembles
The State University of New York at Buffalo（纽约州立大学布法罗分校）；ICTP South American Institute for Fundamental Research Instituto de Física Teórica, UNESP - Univ. Estadual Paulista（国际理论物理研究所南美基础科学研究院，圣保罗州立大学理论物理研究所）
Experimental detection of entanglement in multimode Gaussian states from high-order intensity correlation moments
University of Science and Technology of China（中国科学技术大学）；Hefei National Laboratory（合肥国家实验室）；Anhui Province Key Laboratory of Quantum Network（安徽省量子网络重点实验室）；CAS Center for Excellence in Quantum Information and Quantum Physics（中国科学院量子信息与量子物理前沿卓越创新中心）；School of Physical Sciences（物理学院）
