Interference-induced photon antibunching is investigated for a three-level system coupled to a cavity mode, in which the level scheme is of a lambda type. One of the transitions is weakly coupled to the cavity mode while the other is driven by a control field. Without the control field, i.e. , in the conventional cavity quantum electrodynamics (QED) scheme in the weak coupling regime, photon antibunching can be achieved by carefully choosing the coupling strength and the detuning. This condition can be alleviated by tuning the strength and the frequency of the control field. The condition for the optimal control field that yields photon blockade is derived, and the effects of changing various parameters are investigated. For a given a set of dissipation rates, the atom-cavity coupling strength g needs to be higher than a certain threshold value, although the whole system still remains in the weak coupling regime. A numerical method for finding the optimal parameter regime is proposed.

中文翻译：

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具有三级原子的腔 QED 装置中的干涉诱导光子反聚束

针对耦合到腔模式的三能级系统研究了干扰诱导的光子反聚束，其中能级方案是 lambda 型。一个转变与腔模式弱耦合，而另一个由控制场驱动。在没有控制场的情况下，即在弱耦合状态下的传统腔量子电动力学 (QED) 方案中，可以通过仔细选择耦合强度和失谐来实现光子反聚束。这种情况可以通过调整控制场的强度和频率来缓解。推导出产生光子阻塞的最佳控制场的条件，并研究了改变各种参数的影响。对于给定的一组耗散率，原子-腔耦合强度g需要高于某个阈值，尽管整个系统仍处于弱耦合状态。提出了一种寻找最优参数机制的数值方法。