Magnetic kink states emulated with dipolar superlattice gases. (7th May 2015)

• Record Type: Journal Article
• Authors: Yin, Xiangguo; Cao, Lushuai; Schmelcher, Peter
• Is Part Of: Europhysics letters. Volume 110:Number 2(2015:Apr.)
• Publication Date: 2015-05-07
• Subjects: 67.85.-d -- 75.10.Pq; Physics -- Periodicals; Electronic journals; 530.05
• DOI: 10.1209/0295-5075/110/26004
• Languages: English
• ISSNs: 0295-5075

Abstract

Abstract: We propose an effective Ising spin chain constructed with dipolar quantum gases confined in a one-dimensional optical superlattice. Mapping the motional degree of freedom of a single particle in the lattice onto a pseudo-spin results in an effective Ising type chain dressed with transverse and longitudinal magnetic fields. The ground state of this effective Ising chain changes from a paramagnetic to a single-kink state as the dipolar interaction increases. Particularly in the single-kink state this effective chain permits emulations of magnetic kink effects. Being realizable with current experimental techniques, this effective Ising chain presents a unique platform for emulations of Ising physics and enriches the toolbox for quantum emulation of spin models by ultracold quantum gases.