Ground-state phase diagram of a spin-orbital-angular-momentum coupled Bose-Einstein condensate, (Phys. Rev. Lett. 122, 110402 (2019)) Ground-state phase diagram of a spin-orbital-angular-momentum coupled Bose-Einstein condensate, (Phys. Rev. Lett. 122, 110402 (2019))

最小化 最大化
 

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)) Contact Theory for Spin-Orbit-Coupled Fermi Gases, (Phys. Rev. Lett. 120, 060408 (2018))

最小化 最大化
   

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. (PaperLink)

Production of Rubidium Bose–Einstein Condensate in an Optically Plugged Magnetic Quadrupole Trap, (Chin. Phys. Lett. 33, 076701 (2016)) Production of Rubidium Bose–Einstein Condensate in an Optically Plugged Magnetic Quadrupole Trap, (Chin. Phys. Lett. 33, 076701 (2016))

最小化 最大化
 

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) × 105 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.

(Paper, Link)


Enhanced trapping of cold 6Li using multiple-sideband cooling in a two-dimensional magneto-optical trap, (Phys. Rev. A 92, 013419 (2015)) Enhanced trapping of cold 6Li using multiple-sideband cooling in a two-dimensional magneto-optical trap, (Phys. Rev. A 92, 013419 (2015))

最小化 最大化
 

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 × 108, 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) Manipulation of p-Wave Scattering of Cold Atoms in Low Dimensions Using the Magnetic Field Vector, (Phys. Rev. Lett. 112, 250401, 2014)

最小化 最大化
 

Summary: We propose a new method, using the magnetic vector, to manipulate the atomic interaction. The p-wave interaction depends not only on the magnitude but also on the direction of the magnetic field. The anisotropic scattering property of the p-wave interaction is demonstrated. (Paper, Link)


Multiple side-band generation for two-frequency components injected into a tapered amplifier,(Opt. Lett. 38, 033601, 2013) Multiple side-band generation for two-frequency components injected into a tapered amplifier,(Opt. Lett. 38, 033601, 2013)

最小化 最大化
 

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 FabryPerot 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.

(Paper, Link)