Collisional decoherence observed in matter wave interferometry -: art. no. 160401
Collisional decoherence observed in matter wave interferometry -: art. no. 160401
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DOI：
10.1103/physrevlett.90.160401
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发表时间：
2003-04-25
影响因子：
8.6
通讯作者：
Zeilinger, A
中科院分区：
文献类型：
--
作者：
Hornberger, K;Uttenthaler, S;Zeilinger, A
我们研究了富勒烯的扩展波函数中由于与背景气体碰撞而导致的空间相干性的损失。随着气体压力的增加，量子干涉逐渐被抑制，我们能够定量地支持退相干理论的预测和我们对相互作用过程的描述。因此，我们探索的物质波干涉在有限的气体压力的实际限制，并估计所需的实验真空条件，甚至更大的物体干涉。
We study the loss of spatial coherence in the extended wave function of fullerenes due to collisions with background gases. From the gradual suppression of quantum interference with increasing gas pressure we are able to support quantitatively both the predictions of decoherence theory and our picture of the interaction process. We thus explore the practical limits of matter wave interferometry at finite gas pressures and estimate the required experimental vacuum conditions for interferometry with even larger objects.