Photon statistics of a single-atom intracavity system involving electromagnetically induced transparency
Photon statistics of a single-atom intracavity system involving electromagnetically induced transparency
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DOI：
10.1103/physreva.65.063804
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发表时间：
2002-05
影响因子：
2.9
通讯作者：
S. Rebic;A. Parkins;S. Tan
中科院分区：
文献类型：
--
作者：
S. Rebic;A. Parkins;S. Tan
研究了由单个四能级原子与高精细光学腔模强耦合系统所发射光的光子统计特性。在弱驱动状态下，发现该系统表现出光子阻塞效应。对于中间驱动强度，我们发现从腔发射的光的光子统计的突然变化。在很窄的腔内光子数范围内，光子反聚束转换为光子聚束。证明了这种光子统计的突变是由于原子-腔系统的修饰态之间跃迁的强量子干涉的存在。此外，它表明，强光子聚束是一个非经典效应的驱动场强度的某些值，违反经典的场关联不等式。
We explore the photon statistics of light emitted from a system comprising a single four-level atom strongly coupled to a high-finesse optical cavity mode that is driven by a coherent laser field. In the weak driving regime this system is found to exhibit a photon blockade effect. For intermediate driving strengths we find a sudden change in the photon statistics of the light emitted from the cavity. Photon antibunching switches to photon bunching over a very narrow range of intracavity photon number. It is proven that this sudden change in photon statistics occurs due to the existence of robust quantum interference of transitions between the dressed states of the atom-cavity system. Furthermore, it is shown that the strong photon bunching is a nonclassical effect for certain values of driving field strength, violating classical inequalities for field correlations.