Wall-induced Ramsey effects on electromagnetically induced absorption.
Wall-induced Ramsey effects on electromagnetically induced absorption.
复制标题
壁感应拉姆齐效应对电磁感应吸收的影响。
作者：
Ho;H. Moon
在N型四能级封闭原子系统中，研究了壁感生Ramsey干涉对反弛豫涂层汽泡中电磁感应吸收的影响。我们发现，原子相干性自发地从激发态转移到基态，可能通过运动原子的Ramsey序列与无消相干壁碰撞发生干涉。EIA共振线型的光谱窄化是由Ramsey效应引起的，因为基态之间自发转移的原子相干性的长寿命。该计算的Ramsey EIA谱与在抗弛豫涂覆的蒸气室中实验获得的窄EIA谱很好地一致。
The effect of wall-induced Ramsey interference on the electromagnetically induced absorption (EIA) in an anti-relaxation coated vapor cell is studied in a four-level closed N-type atomic system. We show that the atomic coherence spontaneously transferred from the excited states to the ground states may interfere via the Ramsey sequence of the moving atoms with decoherence-free wall collisions. The spectral narrowing of the EIA resonance lineshape is induced by the Ramsey effect because of the long lifetime of the spontaneously transferred atomic coherence between the ground states. This calculated Ramsey EIA spectrum is in good agreement with the narrow EIA spectrum obtained experimentally in the anti-relaxation coated vapor cell.