Open AccessSpin squeezing of two-component Bose-Einstein condensate
Author(s) -
Dong Yan,
Lei Song,
Chen Dian-Wei
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.3679
Subject(s) - physics , bose–einstein condensate , spin (aerodynamics) , phase space , coherent states , chaotic , quantum mechanics , time evolution , phase (matter) , component (thermodynamics) , spin states , space (punctuation) , state (computer science) , quantum , condensed matter physics , mathematics , linguistics , philosophy , artificial intelligence , computer science , thermodynamics , algorithm
Spin squeezing of two-component Bose-Einstein condensate, which is impacted by the periodic impulses, is investigated. The results show that spin squeezing can reveal the underlying chaotic and regular structures of phase space, namely, spin squeezing vanishes after a very short time for an initial coherent state centred in a chaotic region, but spin squeezing exists for a long time for an initial coherent state centred in a regular region. In particular, with time evolution, distribution and swing of the mean spin direction is closely related to the structure of the space where the initial coherent state centred in. Finally, spin squeezing dynamics of initial states centred in the whole phase space is investigated and a better quantum-classical correspondence is obtained.