论文标题
光学鲜明效果对互环量量子点的纠缠光子对的签名
Signatures of the Optical Stark Effect on Entangled Photon Pairs from Resonantly-Pumped Quantum Dots
论文作者
论文摘要
量子点中Biexciton-Exciton Cascade的两光子共振激发以近确定的方式产生高极化的光子对。但是，仍有可实现的纠缠的最终水平仍在争论中。在这里，我们观察到激光诱导的AC-Stark效应对量子点发射光谱和纠缠的影响。为了增加脉冲持续/寿命比和泵功率，记录了同意的降低值。尽管如此，仍然需要额外的贡献来充分说明观察到的下方同意。
Two-photon resonant excitation of the biexciton-exciton cascade in a quantum dot generates highly polarization-entangled photon pairs in a near-deterministic way. However, the ultimate level of achievable entanglement is still debated. Here, we observe the impact of the laser-induced AC-Stark effect on the quantum dot emission spectra and on entanglement. For increasing pulse-duration/lifetime ratios and pump powers, decreasing values of concurrence are recorded. Nonetheless, additional contributions are still required to fully account for the observed below-unity concurrence.
