It mainly studies the theory of laser cooling atomic molecules, ultracold atomic molecules, Bose-Einstein condensates, Fermion condensates, BEC-BCS crossover, many-body Bose and Fermi subsystems, matter waves, atomic optics and atomic lasers, and studies the interference of two or more Bose-Einstein condensates (Phys. Rev.Lett.84 (2000)). Quantum tunneling of Bose-Einstein condensates in optical lattices includes Landau-Zener tunneling and Wannier-Stark tunneling (phys. Rev. Lett.88, 170408 (2002)), and solitons in Bose-Einstein condensates with time-varying atomic interaction parameters under external potential (phys.rev.lett). 050402 (2005)), Quantum Magnetodynamics of Polarized Photons in Optical Microcavity Arrays (Phys. Rev. Lett.99, 183602 (2007)), fractional vortex and vortex lattice dynamics of spinor bose-Einstein condensate (Phys. Rev. Lett. 1068), photon josephson effect of microcavity polarized condensate (Phys. Rev. Lett. 102). 023602 (2009)), non-053609 (2004)), superfluid-Mott insulator phase transition of dipole bosons in optical lattices (Phys. Rev.A 70,045602 (2004)), nonlinear dynamics of Bose-Einstein condensates with dipole interaction in optical lattices (Phys. Rev. 02560655) Continuous flow of two-component Bose-Einstein condensate in optical lattice (Phys. Rev.A 7 1, 053608 (Exact solution of two-component Bose-Einstein condensate in plane wave background in 2004 (Phys.Rev.E 73, 066 10 (2005) magnetic quantum phase transition of cold atoms in optical lattice (Phys. Rev.A 76, 0436 18 (2007)), synchronous control of Feshbach *** vibration and harmonic potential control of solitons in Bose-Einstein condensate (phys.rev.a. 0236 13 (2008, quantum electrodynamics of microcavity containing cold atoms in double wells (Phys. Rev. A 77, 033620 (2008)), the soliton of Bose-Einstein condensate with time-varying scattering length is excluded in parabolic synthetic potential (Phys. Rev. A 78, 023608 (2008)). Stability of spatial local energy gap solitons of Bose-Einstein condensates in optical lattices (Phys. Rev.E 78,026606 (2008)), Formation and transformation of vector solitons of two Bose-Einstein condensates with controllable interaction in the dynamics of Josephson junctions of optically cold atoms (Phys. Rev. A 79, 0 13423 (2009)), dynamics and modulation of two-dimensional Bose-Einstein condensate ring solitons with modulation interaction (Phys. Rev.A 79, 0236 19 (2000)) and nonlinear dynamics of Bose-Einstein condensate coupled with single-mode microcavity (phys.rev.a. 0334065448 Coherent two-color optical correlation of spinor Bose-Einstein condensate: single spin and mixed spin (Phys. Rev. A 79, 04560 1 (2009)), ground state of spinning Bose-Einstein condensate and detection of transmission spectrum of microcavity (Phys. Rev. A 80, in press (2009)
Quantum information and quantum computing theory
In this paper, we mainly study quantum information and quantum computing theory based on solid materials, and study the quantum entanglement control in anisotropic XYZ model driven by time-dependent magnetic field (Phys. Rev.A74,052105 (2006)) and the evolution equation of entangled state in general two-part system (Phys. Rev.A79,024303 (2009)).
Condensed state theory
3.65438+12893 (1999)), domain-wall interaction in easy-plane ferromagnet (Phys.Rev.B 65, 1724 16 (2002)), and spin chain driven by time-dependent magnetic field. Nonlinear dynamics of magnetization of ferromagnetic body with spin current (Phys. Rev.E 69,06611(2004)), nonlinear dynamics of magnetization of ferromagnetic nanowire with spin current (Phys.Rev.B 72, 0644 10 (2005)), * * the vibration of the domain wall caused by the spin-polarized current in the strip-shaped metal film (Phys. Rev.B 72,172417) 054420 (2008)), a kind of film with biaxial orientation.
3.2. Nano-material theory: The local properties of disordered graphite flake and Kosterlitz-Thouless quantum phase transition (Phys. Rev.Lett. 102, 10640 1 (2009)) and the thermodynamic model of the stability of organic coated nanoparticles (phys.rev. 2054 19 (2004)), nucleation and thermodynamics of nickel as carbon nanofiber catalyst (phys.rev.b72,035453 (2005)), quantum blocking and loop current of graphite sheet with topological defects (Phys.Rev.B 78,1554655).
3.3. Semiconductor theory: mainly study spin-orbit coupling and spin Hall effect, field localization of condensed system, and study the nonlinear dynamics of Bloch electrons under the action of electric field. It is found that the exact solution has a multi-frequency structure and oscillates with time, and the oscillation frequency is determined by the external field. The conditions of macro-control localization and delocalization (Phys. Rev.B65,033102 (2002)) and the collapse and recovery of exciton emission in semiconductor microcavity (Phys. Rev.A70,0138000) are found.
3.4. Superconducting theory: mainly study the theory of strongly correlated system and disordered system, and study the quantum tunneling of vortex in annular Josephson junction (Phys.Rev.B 72, 0 14546 (2005)).
Statistical physics and mathematical physics
The exact solution, radiation solution and long-term behavior of integrable and nearly integrable systems such as coupled nonlinear Schrodinger equation, discrete nonlinear Schrodinger equation and Landau-Lifschitz equation are obtained by using Riemann-Hilbert method and backscattering method. Exact solutions and thermodynamics of two integrable systems with Fermi-Boson model are obtained by Bethe Ansatz method (Phys.Rev.E 73, 026603 (2006)). Physical Review E 74,036614 (2006).
199 1 has published 120 papers, including Phys. Rev.lett. 12 papers, in the journal Physical Review sponsored by american physical society. English review articles 10. According to the international search of SCI, the papers published since 199 1 have been cited by SCI for more than 4000 times, and two of them have been cited by SCI for more than 200 times. The representative works are as follows: The article on soliton excitation in Bose-Einstein condensate with time-varying atomic interaction parameters under external potential (Phys.Rev.Lett.94, 050402 (2005)) has been cited by SCI papers for 250 times. The article on the interference of Bose-Einstein condensate (Phys.Rev.Lett.84, 2294 (2000)) was cited by SCI papers for 2 10 times. The article on quantum tunneling of Bose-Einstein condensate in optical lattice (Phys. Rev.Lett.88, 170408 (2002)) was cited by SCI papers 170 times. The article on local spin magnetic moment model and unified magnetic theory model in cruise magnets (phys.rev.lett.83,207 (1999)) was cited by SCI paper 100 times.
In 2000, he won the first prize of scientific and technological progress of China People's Liberation Army.
In 2004, he won the second prize of scientific and technological progress of the Ministry of Education.
Won the National Outstanding Youth Fund in 2005.