Matter-wave Interferometry with Phase Fluctuating Bose-Einstein Condensates

Abstract

Elongated Bose-Einstein condensates (BECs) exhibit strong spatial phase fluctuations even well below the BEC transition temperature. We demonstrate that atom interferometers using such condensates are robust against phase fluctuations, i.e. the relative phase of the split condensate is reproducible despite axial phase fluctuations. However, larger phase fluctuations limit the coherence time, especially in the presence of some asymmetries in the two wells of the interferometer.

4 pages, 5 figures, figures corrected

References in corpus (4)

• Matter-wave interferometry in a double well on an atom chip
• Non-equilibrium coherence dynamics in one-dimensional Bose gases
• Radio-frequency dressed state potentials for neutral atoms
• Phase Sensitive Recombination of Two Bose-Einstein Condensates on an Atom Chip

Cited by in corpus (5)

• Atom Interferometers
• Non-equilibrium coherence dynamics in one-dimensional Bose gases
• Universal Dephasing of Many-Body Rabi Oscillations of Atoms in One-Dimensional Traps
• Effects of nonintegrability on stabilization of Feshbach molecules in atom waveguides
• Faddeev equations in one-dimensional problems with resonant interactions