Dajun wang cuhk library

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Evaporative cooling prefers ultra-high vacuum UHV for efficient thermalization, whereas collecting large number of atoms by laser cooling needs enough particles in the background. In a stainless chamber, Mimoun et al. Library subscriptions will be modified accordingly. The pressure at the center of the glass cell is estimated to be 5 to 6 times higher limited by conductance. The optical trap and magnetic trap centers are displaced by m from each other. Correspondingly, the PSD increases to. At the final field gradient, the atoms occupy mainly the near bottom part of the potential and Majorana loss is suppressed by the high potential wall.

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  • Quantum Spin Diffusion in a Unitary Fermi Gas Dimensions
  • Dajun Wang Google Scholar Citations
  • Dajun Wang Google Scholar Citations

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    We have openings! We are looking for motivated. Dezhi Xiong, Fudong Wang, Xiaoke Li, Ting-Fai Lam and Dajun Wang, “ Production of a rubidium Bose-Einstein condensate in a hybrid trap with light induced.

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    Dajun Wang. The Chinese Verified email at - Homepage S Ospelkaus, KK Ni, D Wang, MHG De Miranda, B Neyenhuis, Science
    This is consistent with the measured magnetic trap lifetime as discussed in later subsections. The sweep is divided into several segments with different slopes and powers. The measured data points are shown in Fig. Solid curves are to guide the eye and error bars are from fitting of the oscillations.

    Quantum Spin Diffusion in a Unitary Fermi Gas Dimensions

    Rubidium and sodium for future experiments dispensers Alvatec GmbH are directly inserted into the glass cell from the opposite side of the cube.

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    BEAM BENDING BOTH ENDS FIXED INDEX
    Correspondingly, the PSD increases to.

    Materials Phys. This is consistent with the measured magnetic trap lifetime as discussed in later subsections.

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    One-body number loss will limit the density gain in each evaporation steps and the evaporation efficiency could be further deteriorated. The phase transition happens at nK with atoms, signified by a bimodal distribution after 30 ms time-of-flight, as shown in Fig. Each experiment cycle takes about 30 seconds, contributed largely by the 20 s MOT loading time. Our success in condensate production with vacuum limited lifetime of 16 seconds further demonstrated the merit of the hybrid trap technique.

    Mingyang Guo, Bing Zhu, Bo Lu, Xin Ye, Fudong Wang, Romain Vexiau, Nadia Bouloufa-Maafa, Goulven Quéméner, Olivier Dulieu, and Dajun Wang 1 Department of Physics, The Chinese University of Hong Kong, Hong Kong, China ; 2Laboratoire Library subscriptions will be modified accordingly.

    Xiaoke Li, Bing Zhu, Xiaodong He, Fudong Wang, Mingyang Guo, Zhi-Fang Xu, Shizhong Zhang, and Dajun Wang 1Department of Physics, The Chinese University of Hong Kong, Hong Kong, China; 2Department of Physics and Astronomy, University Library subscriptions will be modified accordingly.

    Bo Lu1,2,a) and Dajun Wang1,b) B. Zhu, B. Lu, X. Ye, F. Wang, R.

    Dajun Wang Google Scholar Citations

    Vexiau, N. Bouloufa-Maafa, G. Quéméner, O. Dulieu, and D. Wang, Phys.
    The pre-cooled atoms are then transfered to crossed or single beam ODTs with foci displaced from the magnetic field zero for further evaporation to BEC.

    The MOT number loss during this interval is less than Thanks for voting!

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    D Phys. Further evaporation leads to a quasi-pure condensate with atoms.

    Dashed vertical lines delimit three regions labeled iii and iiiwhich correspond to three evaporation steps. The current setup is limited by the MOT laser power.

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    Dajun wang cuhk library
    Judging from the final BEC number repeatability, we conclude that the thermal shift is reproducible to a great extent and thus further effort to minimize the shifts is not pursued.

    To partially mitigate this loss, we superimpose a crossed ODT to the atoms together with the quadrupole field. Conclusion We have described a compact experimental setup capable of producing Rb Bose-Einstein condensates with more than atoms. The red line is an exponential fitting to the measurement, which gives a lifetime of 16 s.

    Dajun Wang Google Scholar Citations

    The evaporative is obviously less efficient compared with other experiments which typically have ten times better vacuum. The optical trap and magnetic trap centers are displaced by m from each other.

    Video: Dajun wang cuhk library A Tale of three consortia: university library cities in China, Hong Kong and the U.S.

    Field of view: m by m.

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