Polarized entangled Bose-Einstein condensation

Journal Article · Wed Dec 15 04:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.063637· OSTI ID:21528960

Jinlong, Wang; Yu, Shi ^[1]

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1. State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai, 200433 (China)

We consider a mixture of two distinct species of atoms of pseudospin (1/2) with both intraspecies and interspecies spin-exchange interactions and find all the ground states in a general case of the parameters in the effective Hamiltonian. In general, corresponding to the two-species and two-pseudospin states, there are four orbital wave functions into which the atoms condense. We find that in certain parameter regimes, the ground state is the so-called polarized entangled Bose-Einstein condensation; that is, in addition to condensation of interspecies singlet pairs, there are unpaired atoms with spins polarized in the same direction. The interspecies entanglement and polarization significantly affect the generalized Gross-Pitaevskii equations governing the four orbital wave functions into which the atoms condense, as an interesting interplay between spin and orbital degrees of freedom.

• OSTI ID: 21528960
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 82; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR MOMENTUM
ATOMS
BOSE-EINSTEIN CONDENSATION
DEGREES OF FREEDOM
ENERGY LEVELS
FUNCTIONS
GROUND STATES
HAMILTONIANS
INTERACTIONS
MATHEMATICAL OPERATORS
ORIENTATION
PARTICLE PROPERTIES
POLARIZATION
QUANTUM ENTANGLEMENT
QUANTUM OPERATORS
SPIN
SPIN EXCHANGE
SPIN ORIENTATION
WAVE FUNCTIONS