Home List of Titles Spatially inhomogeneous phase evolution of a two-component Bose-Einstein condensate
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- Spatially inhomogeneous phase evolution of a two-component Bose-Einstein condensate
- Anderson, R. P.; Ticknor, C.; Sidorov, A. I.; Hall, B. V.
- We investigate the spatially dependent relative phase evolution of an elongated two-component Bose-Einstein condensate. The pseudospin- 1 2 system is comprised of the | F=1, mF =-1 and | F=2, mF =+1 hyperfine ground states of R 87 b, which we magnetically trap and interrogate with radio-frequency and microwave fields. We probe the relative phase evolution with Ramsey interferometry and observe a temporal decay of the interferometric contrast well described by a mean-field formalism. Inhomogeneity of the collective relative phase dominates the loss of interferometric contrast, rather than decoherence or phase diffusion. We demonstrate a technique to simultaneously image each state, yielding subpercent variations in the measured relative number while preserving the spatial mode of each component. In addition, we propose a spatially sensitive interferometric technique to image the relative phase.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Atom Optics and Ultrafast Spectroscopy
- Physical Review A: Atomic, Molecular, and Optical Physics, Vol. 80, no. 2 (Aug 2009)
- Publication year
- FOR Code(s)
- 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics; 0204 Condensed Matter Physics; 0205 Optical Physics
- Bose-Einstein condensates; Inhomogeneity; Interferometric techniques; Ramsey interferometry
- American Physical Society
- Publisher URL
- Copyright © 2009 The American Physical Society. Published version of the paper reproduced here with the kind permission of the publisher for non-commercial purposes only.
- Research Projects
- Full text
- Peer reviewed