Two-mode Bose gas: Beyond classical squeezing

Details Two-mode Bose gas: Beyond classical squeezing Two-mode Bose gas: Beyond classical squeezing

2010-02-12

arxiv.org/abs/1002.2504v1

Physics

Condensed Matter

Quantum Gases

15 pages, 16 figures

Scientific paper

The dynamical evolution of squeezing correlations in an ultracold Bose-Einstein distributed across two modes is investigated theoretically in the framework of the Bose-Hubbard model. It is shown that the eigenstates of the Hamiltonian do not exploit the full region allowed by Heisenberg's uncertainty relation for number and phase fluctuations. The development of non-classical correlations and relative number squeezing is studied in the transition from the Josephson to the Fock regime. Comparing the full quantum evolution with classical statistical simulations allows to identify quantum aspects of the squeezing formation. In the quantum regime, the measurement of squeezing allows to distinguish even and odd total particle numbers.

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