Phase coherence and fragmentation in weakly interacting bosonic gases
arXiv:0804.1836 · doi:10.1103/PhysRevA.77.041605
Abstract
We present a theory of measurement-induced interference for weakly interacting Bose-Einstein condensed (BEC) gases. The many-body state resulting from the evolution of an initial fragmented (Fock) state can be approximated as a continuous superposition of Gross-Pitaevskii (GP) states; the measurement breaks the initial phase symmetry, producing a distribution pattern corresponding to only one of the GP solutions. We discuss also analytically solvable models, such as two-mode on-chip adiabatic recombination and soliton generation in quasi one-dimensional condensates.
5 pages
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- Relevance of Bose-Einstein Condensation to the Interference of Two Independent Bose Gases
- Localization of the relative phase via measurements
- Counting statistics of interfering Bose-Einstein condensates
- Interference in a two-mode Bose system with particles is typical
- Phase randomization and typicality in the interference of two condensates
- Typical observables in a two-mode Bose system
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