Dephasing of Josephson oscillations between two coupled Bose-Einstein condensates
Pierre Villain, Maciej Lewenstein
DOI 10.1103/PhysRevA.59.2250 · Physical Review A
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We study the dynamics of the relative phase between two atomic Bose-Einstein condensates coupled via collisions and via a Josephson-like coupling. We derive the equations of the motion for the relative phase and the relative number operators from the second-quantized Hamiltonian of the system using a quantum field theoretical approach. We distinguish the cases in which the two condensates are in the same trap or in two different traps and study the influence of this difference on the first-order correlation function of atomic fields. In identical traps this function does not undergo dephasing. We calculate the dephasing time for the case of different traps.
Similar papers
Coherence and Josephson oscillations between two tunnel-coupled one-dimensional atomic quasicondensates at finite temperature
similarity 0.92Pjotrs Grišins & Igor E. Mazets
Source status unknown — claims are unverified
Nonlinear Josephson-type oscillations of a driven, two-component Bose-Einstein condensate
similarity 0.91J. Williams et al.
Source status unknown — claims are unverified
Macroscopic superpositions in Bose-Josephson junctions: Controlling decoherence due to atom losses
similarity 0.89K. Pawlowski et al.
Source status unknown — claims are unverified
Two-Point Phase Correlations of a One-Dimensional Bosonic Josephson Junction
similarity 0.89T. Betz et al.
Source status unknown — claims are unverified
Josephson tunneling between weakly interacting Bose-Einstein condensates
similarity 0.89F. Meier & W. Zwerger
Source status unknown — claims are unverified
Spontaneous symmetry breaking and collapse in bosonic Josephson junctions
similarity 0.89Giovanni Mazzarella & Luca Salasnich
Source status unknown — claims are unverified