7 papers
Collective Oscillations of Bose-Einstein Condensates in a Synthetic Magnetic Field
Huaxin He, Fengtao Pang, Yongping Zhang +1
We study the collective oscillations of spin-orbit-coupled Bose-Einstein condensates in the presence of position-dependent detuning. Specifically, we explore the quadrupole modes o…
Transfer of solitons and half-vortex solitons via adiabatic passage
Chenhui Wang, Yongping Zhang, V. V. Konotop
We show that transfer of matter-wave solitons and half-vortex solitons in a spin-orbit coupled Bose-Einstein condensate between two (or more) arbitrarily chosen sites of an optical…
Tunable nonlinear Landau-Zener tunnelings in a spin-orbit-coupled spinor Bose-Einstein condensate
Zhiqian Gui, Jin Su, Hao Lyu +1
Nonlinear Landau-Zener tunneling is an important nonlinear phenomenon. We propose to stimulate the nonlinear tunneling in a spin-orbit-coupled spinor Bose-Einstein condensate. The…
Thouless pumping and trapping of two-component gap solitons
Hao Lyu, Yongping Zhang, Thomas Busch
We study Thouless pumping and arresting of gap solitons in a two-component Bose gas loaded into an optical superlattice. We show that, depending on the atomic interactions and chem…
Stabilizing period-doubled density waves by spin-orbit coupling in Bose-Einstein condensates in optical lattices
Chenhui Wang, Yongping Zhang
In atomic Bose-Einstein condensates in optical lattices, mean-field energy can support the existence of period-doubled density waves, which are similar to Bloch waves but have the…
Adjusting exceptional points using saturable nonlinearities
Qingxin Gu, Chunlei Qu, Yongping Zhang
We study the impact of saturable nonlinearity on the presence and location of exceptional points in a non-Hermitian dimer system. The inclusion of the saturable nonlinearity leads…