Collisional decoherence observed in matter wave interferometry -: art. no. 160401

被引：213

作者：

Hornberger, K ^{[1
]}

Uttenthaler, S ^{[1
]}

Brezger, B ^{[1
]}

Hackermüller, L ^{[1
]}

Arndt, M ^{[1
]}

Zeilinger, A ^{[1
]}

机构：

[1] Univ Vienna, Inst Expt Phys, A-1090 Vienna, Austria

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.90.160401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

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