Study on Time-dependent Broad Feshbach Resonance Scattering in Ultracold Fermi Atoms of 6Li

Bei, 张蓓 Zhang; Fang, 李芳 Li; Shu-jin, 邓书金 Deng; Hai-Bin, 武海斌 Wu

doi:10.3788/jqo20192504.0502

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The resonances are detected as an enhancement of atoms loss. [46][47][48] Figure 5 shows the results of the remaining atom number of both species after holding time of 200 ms for different magnetic field values.…”

Section: Feshbach Resonances and Achievement Of Dual Becsmentioning

confidence: 99%

“…Many interesting phenomena can be studied by tuning the scattering length using Feshbach resonances. [48][49][50] To achieve the BECs, the magnetic field of 372.6 G (which is below the 39 K intra-species resonance at 403.4 G) is ramped up in 20 ms and held 200 ms for the field stabilization after the previously mentioned evaporation step of both species in the |F = 1, m F = 1 state. At this time, the scattering length of 39 K is a K = 20.05a 0 , which is obtained form the well known formula [32] a…”

Section: Feshbach Resonances and Achievement Of Dual Becsmentioning

confidence: 99%

See 1 more Smart Citation

Production of dual species Bose–Einstein condensates of ³⁹K and ⁸⁷Rb*

Mi¹,

Nawaz²,

Wang³

et al. 2021

Chinese Phys. B

View full text Add to dashboard Cite

We report the production of 39 K and 87 Rb Bose-Einstein condensates (BECs) in the lowest hyperfine states |F = 1, mF = 1 simultaneously. We collect atoms in bright/dark magneto-optical traps (MOTs) of 39 K/ 87 Rb to overcome the light-assisted losses of 39 K atoms. Gray molasses cooling on the D1 line of the 39 K is used to effectively increase the phase density, which improves the loading efficiency of 39 K into the quadrupole magnetic trap. Simultaneously, the normal molasses are employed for 87 Rb. After the microwave evaporation cooling on 87 Rb in the optically plugged magnetic trap, the atoms mixture is transferred to a crossed optical dipole trap, where the collisional properties of the two species in different combinations of the hyperfine states are studied. The dual species BECs of 39 K and 87 Rb are obtained by further evaporative cooling in optical dipole trap at a magnetic field of 372.6 G with the background repulsive interspecies scattering length a KRb = 34 a0 (a0 is the Bohr radius) and the intraspecies scattering length aK = 20.05 a0.

show abstract

Section: Feshbach Resonances and Achievement Of Dual Becsmentioning

confidence: 99%