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Preparation of the spin-Mott state: a spinful Mott insulator of repulsively bound pairs
Julius de Hond, Jinggang Xiang, Woo Chang Chung +5
We observe and study a special ground state of bosons with two spin states in an optical lattice: the spin-Mott insulator, a state that consists of repulsively bound pairs which is…
Coherence Times of Bose-Einstein Condensates beyond the Shot-Noise Limit via Superfluid Shielding
William Cody Burton, Colin J. Kennedy, Woo Chang Chung +3
We demonstrate a new way to extend the coherence time of separated Bose-Einstein condensates that involves immersion into a superfluid bath. When both the system and the bath have…
Observation of Bose-Einstein Condensation in a Strong Synthetic Magnetic Field
Colin J. Kennedy, William Cody Burton, Woo Chang Chung +1
Extensions of Berry's phase and the quantum Hall effect have led to the discovery of new states of matter with topological properties. Traditionally, this has been achieved using g…
Weyl points in three-dimensional optical lattices: synthetic magnetic monopoles in momentum space
Tena Dubček, Colin J. Kennedy, Ling Lu +3
We show that Hamiltonians with Weyl points can be realized for ultracold atoms using laser-assisted tunneling in three-dimensional optical lattices. Weyl points are synthetic magne…
Spin-orbit coupling and spin Hall effect for neutral atoms without spin-flips
Colin J. Kennedy, Georgios A. Siviloglou, Hirokazu Miyake +2
We propose a scheme which realizes spin-orbit coupling and the spin Hall effect for neutral atoms in optical lattices without relying on near resonant laser light to couple differe…
Realizing the Harper Hamiltonian with Laser-Assisted Tunneling in Optical Lattices
Hirokazu Miyake, Georgios A. Siviloglou, Colin J. Kennedy +2
We experimentally implement the Harper Hamiltonian for neutral particles in optical lattices using laser-assisted tunneling and a potential energy gradient provided by gravity or m…