Ground-state phase diagram of a spin-orbital-angular-momentum coupled Bose-Einstein condensate, (Phys. Rev. Lett. 122, 110402 (2019))
Summary: We experimentally realize the spin-orbital-angular-momentum (SOAM) coupling by using a pair of Gaussian and Laguerre-Gaussian laser beams, and map out the ground-state phase diagram. The phase transition is demonstrated to be of the first order. We observe the hysteresis loop associated with the first-order phase transition. The interatomic interaction effect on the phase transition is also elucidated. (Paper, Link) |
Contact Theory for Spin-Orbit-Coupled Fermi Gases, (Phys. Rev. Lett. 120, 060408 (2018))
Summary: We extend the contact theory to the spin-orbit-coupled (SOC) Fermi system. New scattering paramters, besides the s- and p-wave scattering length (volume), are required due to the SOC effect. The energy adiabatic relation and large-momentum distrituion are obtained for the coupled system. (Paper, Link) |
Production of Rubidium Bose–Einstein Condensate in an Optically Plugged Magnetic Quadrupole Trap, (Chin. Phys. Lett. 33, 076701 (2016))
Summary: We experimentally produce the rubidium Bose–Einstein condensate in an optically plugged magnetic quadrupole trap. The atom number of the condensate is 1.2(0.4) × 10^{5} and the temperature is below 100 nK. We also study characteristic behaviors of the condensate, such as phase space density, condensate fraction and anisotropic expansion. |
Enhanced trapping of cold 6Li using multiple-sideband cooling in a two-dimensional magneto-optical trap, (Phys. Rev. A 92, 013419 (2015))
Summary: We experimentally and theoretically demonstrate the enhancement of 6Li trapping efficiency in a three-dimensional magneto-optical trap (3D MOT) by using the multiple-sideband cooling in a two-dimensional magneto-optical trap (2D MOT). The number of trapped atoms in the 3D MOT is 6.0 × 10^{8}, which is higher by a factor of 4 than in the case of single-frequency cooling. We have investigated the dependence of atom number on laser detuning, and our experimental result agrees well with the prediction of a simple two-level model. (Paper, Link) |
Manipulation of p-Wave Scattering of Cold Atoms in Low Dimensions Using the Magnetic Field Vector, (Phys. Rev. Lett. 112, 250401, 2014)
Multiple side-band generation for two-frequency components injected into a tapered amplifier,（Opt. Lett. 38, 033601, 2013）
Summary: We have experimentally studied multiple side-band generation for two-frequency components injected into a tapered amplifier (TA) and demonstrated its effects on atomic laser cooling. A heterodyne frequency-beat measurement and a Fabry–Perot interferometer have been applied to analyze the side-band generation with different experimental parameters. The side-band generation with a small frequency difference has a significant effect on the number of trapped atoms. |