We present an all-fiber emitter-cavity quantum electrodynamics (QED) scheme which makes it possible to realize the strong photon blockade phenomenon in the strong coupling regime. To begin with, we study the emitter-cavity system where the two-level emitter and cavity are driven by a laser field under different driving strengths, respectively. Then, we theoretically derive that through driving the single-mode nanofiber cavity and a single two-level emitter simultaneously with two classical fields, the photon antibunching effect and the intracavity mean photon number will be tremendously enhanced. Compared with the systems driving an emitter or the cavity, respectively, the second-order correlation function at zero time decay $g^{\left(2\right)}\left(0\right)$ in our system can reach the minimum value as 0.0003, which is much smaller than a single-emitter-cavity QED system of emitter drive or cavity drive. In particular, under the condition of quantum interference model, the strong phenomenon of photon antibunching can be flexibly reached by controlling of the intensity relationship between the dual-pumping fields in the strong coupling regime. Our proposal can be achieved in the near future and has great potential applications in high-quality single-photon sources and quantum communication processing.

中文翻译：

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全光纤发射器腔量子电动力学系统中的强光子阻挡

我们提出了一种全光纤发射器腔量子电动力学（QED）方案，该方案使在强耦合状态下实现强光子阻挡现象成为可能。首先，我们研究发射器-腔系统，其中两级发射器和腔分别在不同的驱动强度下由激光场驱动。然后，从理论上讲，通过同时驱动两个经典场驱动单模纳米纤维腔和单个两能级发射极，将大大提高光子的抗聚束效应和腔内平均光子数。与分别驱动发射器或腔的系统相比，零时衰减下的二阶相关函数$G^{（\mathrm{2个}）}（0）$我们系统中的最小值可以达到0.0003，这比发射器驱动器或腔体驱动器的单发射器腔体QED系统小得多。特别地，在量子干涉模型的条件下，通过控制强耦合状态下的双泵浦场之间的强度关系，可以灵活地达到光子反聚束的强现象。我们的建议可以在不久的将来实现，并且在高质量单光子源和量子通信处理中具有巨大的潜在应用。