标题： 在超慢光区域的光子回波增强观测 显示英文标题

标题： Observations of photon echo enhancement in an ultraslow light regime

摘要： 利用基于光谱空洞烧蚀的稀疏固体介质中超慢群速度，我们报告了增强的光子回波效率，比非慢光区域的效率高三个数量级。 这种增强是由于在超慢光区域中光子-原子相互作用增强，导致光学数据脉冲的吸收呈指数增长，而由于群速度依赖的种群耗尽，回波再吸收可以忽略不计。 显示英文摘要

摘要： Using spectral hole-burning-based ultraslow group velocity in a dilute solid medium, we report enhanced photon echo efficiency three orders of magnitude higher than that in a nonslow light regime. The enhancement is due to exponentially increased absorption of an optical data pulse owing to the enhanced photon-atom interaction in an ultraslow light regime, whereas echo reabsorption is negligibly small due to group-velocity dependent population depletion.