论文标题
接近单光子脉冲
Approaching single-photon pulses
论文作者
论文摘要
由于正频率和积极时间不兼容的要求，因此无法按需生成单光子脉冲。因此，结果状态包含多局部的较小概率。我们得出了近似于单光子脉冲的可实现状态的最大忠诚度的上限和下限。边界对超快光学有影响。对于几个循环或接近发病的脉冲的最大富达度很低，但随着脉冲信封变化较慢而迅速增加。我们还展示了与单个光子接近的严格局部状态。
Single-photon pulses cannot be generated on demand, due to incompatible requirements of positive frequencies and positive times. Resulting states therefore contain small probabilities for multiphotons. We derive upper and lower bounds for the maximum fidelity of realizable states that approximate single-photon pulses. The bounds have implications for ultrafast optics; the maximum fidelity is low for pulses with few cycles or close to the onset, but increases rapidly as the pulse envelope varies more slowly. We also demonstrate strictly localized states that are close to single photons.
