LOSS OF SPATIAL COHERENCE BY A SINGLE SPONTANEOUS EMISSION
LOSS OF SPATIAL COHERENCE BY A SINGLE SPONTANEOUS EMISSION
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DOI：
10.1103/physrevlett.73.1223
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发表时间：
1994-08-29
影响因子：
8.6
通讯作者：
MLYNEK, J
中科院分区：
文献类型：
--
作者：
PFAU, T;SPALTER, S;MLYNEK, J
我们已经证明了原子波函数在单次自发发射后横向空间相干性的损失。 He* 原子同时受到周期可变的驻光波的衍射和激发。相互作用后，受激原子因单个自发发射的光子而衰变。通过改变驻波光波的周期，我们将空间相干性的损失绘制为横坐标的函数。通过检测发射的光子，人们可以“擦除”可用的位置信息并恢复相关实验中的横向相干性，或者实现海森堡显微镜。
We have demonstrated the loss of transverse spatial coherence of an atomic wave function after a single spontaneous emission. He* atoms were both diffracted and excited by a standing light wave with a variable period. After the interaction, the excited atoms decay by a single spontaneously emitted photon. By changing the period of the standing light wave, we have mapped the loss of spatial coherence as a function of the transverse coordinate. By detecting the emitted photon one could ''erase'' the position information available and recover the transverse coherence in a correlation experiment, or realize a Heisenberg microscope.