Two-point phase correlations of a one-dimensional bosonic Josephson junction
Quantum Gases
2011-03-30 v2
Abstract
We realize a one-dimensional Josephson junction using quantum degenerate Bose gases in a tunable double well potential on an atom chip. Matter wave interferometry gives direct access to the relative phase field, which reflects the interplay of thermally driven fluctuations and phase locking due to tunneling. The thermal equilibrium state is characterized by probing the full statistical distribution function of the two-point phase correlation. Comparison to a stochastic model allows to measure the coupling strength and temperature and hence a full characterization of the system.
Cite
@article{arxiv.1010.5989,
title = {Two-point phase correlations of a one-dimensional bosonic Josephson junction},
author = {Thomas Betz and Stephanie Manz and Robert Bücker and Tarik Berrada and Christian Koller and Georgy Kazakov and Igor E. Mazets and Hans-Peter Stimming and Aurelien Perrin and Thorsten Schumm and Jörg Schmiedmayer},
journal= {arXiv preprint arXiv:1010.5989},
year = {2011}
}