Volume 90, Number 1, June 2010
|Number of page(s)||6|
|Published online||05 May 2010|
Phase transition, entanglement and squeezing in a triple-well condensate
Institute of Physics “Gleb Wataghin”, University of Campinas - P. O. Box 6165, 13083-970, Campinas, SP, Brazil
Corresponding authors: firstname.lastname@example.org email@example.com firstname.lastname@example.org
Accepted: 6 April 2010
We provide an in-depth characterization of a three-mode Bose-Einstein condensate trapped in a symmetric circular triple-well potential. We show how the purity related to the su(3) algebra scales for increasing number of atoms and signals the quantum phase transition between two dynamical regimes in a specific configuration. This measure, which is intrinsically related to particle entanglement, also depicts if some squeezing is occurring when we consider the system's ground state. Unlike the well-known double-well model, the triple-well model exhibits a first-order quantum phase transition, which could be investigated with the current trapping technology.
PACS: 03.75.Lm – Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations / 03.67.Mn – Entanglement measures, witnesses, and other characterizations / 64.70.Tg – Quantum phase transitions
© EPLA, 2010
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.