Collisional decoherence observed in matter wave interferometry

Details Collisional decoherence observed in matter wave interferometry Collisional decoherence observed in matter wave interferometry

2003-03-14

arxiv.org/abs/quant-ph/0303093v1

Phys. Rev. Lett. 90, 160401 (2003)

Physics

Quantum Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.90.160401

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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