2012/02/16 by Jie Zhang, Zhang, Jie
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Quantum Gases (cond-mat.quant-gas) #Quantum Information and Cryptography #Quantum Mechanics and Applications #cond-mat.quant-gas
paper · pdf · doi:10.48550/arxiv.1202.3526
arXiv admin note: text overlap with arXiv:cond-mat/0106118 by other authors
openalex publication_date 2012/02/16 · arxiv created 2012/03/15 · arxiv updated 2012/03/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present the quantum ground state properties of 23Na spinor condensates, which is confined in a periodic or double-well potential and subject to a magnetic dipole-dipole interaction between nearby wells. A novel singlet state arise in the system and can be discussed in explicit form. Caused by the competition between the intra-site spin exchange interactions and the inter-site dipole-dipole interactions, this quaternary-singlet state is a entangled state formed by at lest four particles and vanish the total spin. This is distinct from the direct product of the two conventional singlet pairs.