Coherent transport behaviour has been demonstrated in experiments on atomic Bose-Einstein condensates driven by an external force through a quasi-one-dimensional optical lattice. We exploit the Wannier-function representation of band states to elucidate the relationship of such coherent transport with the weak-link Josephson effect and test the observability of multimode behaviour in condensates by numerical solution of the Gross-Pitaevskii equation.

Europhysics Letters (EPL)Nov 1, 200115 citations

Dirac Point Structure in a Bose-Einstein Condensate in a Honeycomb Optical Lattice

Zhongbo Yan, Xiaosen Yang, Shaolong Wan

arXiv:1302.1082Jan 30, 20130 citations

arXiv:1203.1259 · Advances in atomic, molecular, and optical physics

Kilohertz-Driven Bose–Einstein Condensates in Optical Lattices

E. Arimondo, D. Ciampini, André Eckardt, Martin Holthaus, O. Morsch

Published Jan 1, 2012• 54 citations

arXiv HTML PDF

DOI: 10.1016/b978-0-12-396482-3.00010-7

Related papers

Dynamics of Bose–Einstein condensate in driven tilted optical lattices

Ai‐Xia Zhang, Li-Xia Cai, Zi-Fa Yu +3 more

Physics Letters AOct 25, 20183 citations

Interaction-Driven Dynamics of a Bose-Einstein Condensate in an Optical Lattice

M. K. H. Ome, Thomas M. Bersano, Sean M. Mossman +3 more

Bulletin of the American Physical SocietyJun 2, 20200 citations

Stability of Bose Einstein Condensates in Periodically Driven 2D Optical Lattices

J. Maslek, Thomas Boulier, Carlos Bracamontes +2 more

Bulletin of the American Physical SocietyMay 31, 20180 citations

Bose-Einstein Condensate in Optical Lattices

Antoine Browaeys, J. V. Porto, S P. Peil +3 more

Jan 1, 20020 citations

Josephson-type oscillations of a driven Bose-Einstein condensate in an optical lattice

Maria Luisa Chiofalo, M. P. Tosi

Europhysics Letters (EPL)Nov 1, 200115 citations

Dirac Point Structure in a Bose-Einstein Condensate in a Honeycomb Optical Lattice

Zhongbo Yan, Xiaosen Yang, Shaolong Wan

We study the Bose-Einstein condensate in a honeycomb optical lattice within Bogoliubov theory and find that for a ${\bf k} = 0$ condensate, the Dirac points appear in the Bogoliubov excitation spectrum when $0 < β< 2$ , which illustrates that the bose-bose interaction does not change the Dirac point structure but only give a modification of the velocity of the Dirac cone. When the bosons are driven to condense at ${\bf k} = {\bf K}$ , however, we find that the topology of the Dirac points will be altered by arbitrary weak interaction. Furthermore, we find that the next-nearest-neighbor hopping in an isotropic and an anisotropic lattice has different effects to the dynamics of the condensate and it should be taken into account when the lattice is not sufficiently deep.We study the Bose-Einstein condensate in a honeycomb optical lattice within Bogoliubov theory and find that for a ${\bf k} = 0$ condensate, the Dirac points appear in the Bogoliubov excitation spectrum when $0 < β< 2$, which illustrates that the bose-bose interaction does not change the Dirac point structure but only give a modification of the velocity of the Dirac cone. When the bosons are driven to condense at ${\bf k} = {\bf K}$, however, we find that the topology of the Dirac points will be altered by arbitrary weak interaction. Furthermore, we find that the next-nearest-neighbor hopping in an isotropic and an anisotropic lattice has different effects to the dynamics of the condensate and it should be taken into account when the lattice is not sufficiently deep.

arXiv:1302.1082Jan 30, 20130 citations

We study the Bose-Einstein condensate in a honeycomb optical lattice within Bogoliubov theory and find that for a

{\bf k} = 0

condensate, the Dirac points appear in the Bogoliubov excitation spectrum when

0 < β< 2

, which illustrates that the bose-bose interaction does not change the Dirac point structure but only give a modification of the velocity of the Dirac cone. When the bosons are driven to condense at

{\bf k} = {\bf K}

, however, we find that the topology of the Dirac points will be altered by arbitrary weak interaction. Furthermore, we find that the next-nearest-neighbor hopping in an isotropic and an anisotropic lattice has different effects to the dynamics of the condensate and it should be taken into account when the lattice is not sufficiently deep.