标题： 室温下亚稳态氦原子相干 Population 振荡的相敏放大 显示英文标题

标题： Phase-sensitive amplification via coherent population oscillations in metastable helium at room temperature

摘要： 我们报告了在室温亚稳态氦中使用超窄相干布居振荡的非简并信号-闲频参量放大（PSA）的实验结果。 通过单次通过共振系统，我们实现了近7的高PSA增益和200 kHz的带宽。 此外，测量到的最小增益接近理想值，表明我们拥有纯PSA。 这从我们的相位到相位转移曲线测量中也得到了证实，显示我们拥有近乎完美的压缩器，这对各种应用都很有趣。 显示英文摘要

摘要： We report our experimental results on phase-sensitive amplification (PSA) in non-degenerate signal-idler configuration using ultra-narrow coherent population oscillations in metastable helium at room temperature. We achieved a high PSA gain of nearly 7 with a bandwidth of 200 kHz, by using the system at resonance in a single-pass scheme. Further, the measured minimum gain is close to the ideal value, showing that we have a pure PSA. This is also confirmed from our phase-to-phase transfer curves measurements, illustrating that we have a nearly perfect squeezer, which is interesting for a variety of applications.