论文标题
在单个量子点的共振荧光中，腔辅助增强和脱落免疫挤压
Cavity-assisted enhanced and dephasing immune squeezing in the resonance fluorescence of a single quantum dot
论文作者
论文摘要
从理论上讲，我们在单个量子点（QD）的谐振荧光中表明了限制在支柱 - 微神经的单个量子点（QD）的荧光荧光中，并由连续波激光器驱动。我们采用基于极化主方程理论的形式主义来将激子耦合的影响非常准确地纳入点腔体系。与在自由空间中理想的单个两级系统相比，由于QD的空腔耦合，我们显示出挤压的显着增强。特别是，与没有空腔耦合的单个QD相比，我们在挤压方面表现出四倍的增强。我们进一步证明了挤压的持久性，即使纯dephaS的变化大于辐射衰减速率。这些新型特征归因于腔增强的连贯性，导致部分降低了声子引起的不连贯率的恶化影响。我们还表明，可以通过适当调节引人注目来部分规避声子诱导的不一致速率对挤压的不断变化。
We theoretically demonstrate the enhanced and dephasing immune squeezing in the resonance fluorescence of a single quantum dot (QD) confined to a pillar-microcavity and driven by a continuous wave laser. We employ a formalism based on Polaron master equation theory for incorporating the influence of exciton-phonon coupling quite accurately in the dot-cavity system. We show a significant enhancement of squeezing due to cavity coupling of the QD as compared to that of an ideal single two-level system in free space. Particularly, we show a four-fold enhancement in squeezing as compared to that of a single QD without cavity coupling. We further demonstrate the persistence of squeezing even when the pure dephasing becomes greater than the radiative decay rate. These novel features are attributed to the cavity-enhanced coherence causing partial reduction of the deteriorating effects of phonon-induced incoherent rates. We also show that the deteriorating effects of phonon-induced incoherent rates on squeezing can be partially circumvented by properly adjusting the detunings.
