42 citations · 216 across the 32 of their papers we have counts for
17 papers · 1 filter
Resonantly enhanced coherence by laser-assisted tunneling
Hong-Xia Hao, Shiping Feng, Shi-Jie Yang
We study quantum coherence of strongly interacting cold bosons in a double-well potential driven by a laser field. The system is initially in a Fock state and, for either with or w…
Exact solitons and manifold mixing dynamics in the spin-orbit-coupled spinor condensates
Yong-Kai Liu, Shi-Jie Yang
We derive exact static as well as moving solitonic solutions to the one-dimensional spin-orbit-coupled F=1 Bose-Einstein condensates. The static polar soliton is shown to be the gr…
Stable knots in the trapped Bose-Einstein condensates
Yong-Kai Liu, Shiping Feng, Shi-Jie Yang
The knot of spin texture is studied within the two-component Bose-Einstein condensates which are described by the nonlinear Gross-Pitaevskii equations. We start from the non-intera…
Dynamical revivals of the paired superfluidity and counterflow superfluidity
Shi-Jie Yang, Pei Lu, Shiping Feng
The quantum dynamics of two-species bosons in an optical lattice is studied within the mean-field theory. The quantum coherence experiences periodical collapses and revivals, which…
Exact periodic and solitonic states in the spinor condensates
Zhi-Hai Zhang, Shi-Jie Yang
We propose a method to analytically solve the one-dimensional coupled nonlinear Gross-Pitaevskii equations which govern the motion of the spinor Bose-Einstein condensates. In a uni…
Exact temporal evolution of the two-species Bose-Einstein condensates
Cong Zhang, Zhi-Hai Zhang, Shi-Jie Yang
We construct exact stationary solutions to the one-dimensional coupled Gross-Pitaevskii equations for the two-species Bose-Einstein condensates with equal intraspecies and interspe…
Skyrmion crystals in the pseudo-spin-1/2 Bose-Einstein condensates
Cong Zhang, Wenan Guo, Shiping Feng +1
Exact two-dimensional solutions are constructed for the pseudo-spin-1/2 Bose-Einstein condensates which are described by the coupled nonlinear Gross-Pitaevskii equations where the…
Fractional windings of the spinor condensates on a ring
Yong-Kai Liu, Shi-Jie Yang
We study the uniform solutions to the one-dimensional spinor Bose-Einstein condensates on a ring. These states explicitly display the associated motion of the super-current and the…
Half-knot in the spinor condensates
Yong-Kai Liu, Shi-Jie Yang
We present an exact solution to the stationary coupled nonlinear Gross-Pitaevskii equations which govern the motion of the spinor Bose-Einstein condensates. The solitonic solution…
Exact solutions to the three-dimensional Gross-Pitaevskii equation with modulated radial nonlinearity
Wei-Ting Wang, Ying-Ying Li, Shi-Jie Yang
We study the Bose-Einstein condensate trapped in a three-dimensional spherically symmetrical potential. Exact solutions to the stationary Gross-Pitaevskii equation are obtained for…
Exact solutions to the spin-2 Gross-Pitaevskii equations
Zhi-Hai Zhang, Yong-Kai Liu, Shi-Jie Yang
We present several exact solutions to the coupled nonlinear Gross-Pitaevskii equations which describe the motion of the one-dimensional spin-2 Bose-Einstein condensates. The nonlin…
Impurity effects on the quantum coherence of a few-boson system
Pei Lu, Zhi-Hai Zhang, Shiping Feng +1
The impurity effects on the quantum coherence of a few-boson system are studied within the two-site Hubbard model. Periodical collapses and revivals of coherence occur in the prese…
Analytical solutions to the spin-1 Bose-Einstein condensates
Zhi-Hai Zhang, Cong Zhang, Shi-Jie Yang +1
We analytically solve the one-dimensional coupled Gross-Pitaevskii equations which govern the motion of F=1 spinor Bose-Einstein condensates. The nonlinear density-density interact…
Disorder effects on the quantum coherence of a many-boson system
Zhi-Hai Zhang, Pei Lu, Shiping Feng +1
The effects of disorders on the quantum coherence for many-bosons are studied in a double well model. For the ground state, the disorder enhances the quantum coherence. In the deep…
Thermodynamical properties of a trapped interacting Bose gas
Shi-Jie Yang, Yuechan Liu, Shiping Feng
The thermodynamical properties of interacting Bose atoms in a harmonic potential are studied within the mean-field approximation. For weak interactions, the quantum statistics is e…
Fermionic superfluidity and spontaneous superflows in optical lattices
Shi-Jie Yang, Shiping Feng
We study superfluidity of strongly repulsive fermionic atoms in optical lattices. The atoms are paired up through a correlated tunneling mechanism, which induces superfluidity when…
Dynamical revival of phase coherence in a many-boson system
Shi-Jie Yang, Sumin Nie
We study the quantum dynamics of cold Bose atoms in a double well. It is shown that self-trapping, as well as population oscillations are common phenomena associated to nonlinear i…