Noise-induced dephasing in neutron interferometry

Autor(en)

Georg Sulyok, Yuji Hasegawa, Jürgen Klepp, Hartmut Lemmel, Helmut Rauch

Abstrakt

Decoherence phenomenona in a neutron interferometer are analyzed by simulation of the effects of an environment with magnetic noise fields. Basic calculations and experiments show the validity and limitations of this model system. In particular, loss and recovery of the interference pattern with controllable noise sources in both interferometer arms are discussed in detail. In addition, the decoherence behavior at high interference order, where Schrodinger-cat-like states exist in the interferometer, is investigated. While at low interference order a smearing of the interference pattern is observed, at high interference order a smearing of the modulated momentum distribution occurs.

Organisation(en)

Physik Funktioneller Materialien

Externe Organisation(en)

Technische Universität Wien, Institut Laue-Langevin (ILL)

Journal

Physical Review A

Band

81

Anzahl der Seiten

8

ISSN

1050-2947

DOI

https://doi.org/10.1103/PhysRevA.81.053609

Publikationsdatum

2010

Peer-reviewed

Ja

ÖFOS 2012

103034 Teilchenphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/eac3aa35-e316-44cd-8407-fe224bc391a9