第八届全国磁学会议.pptxVIP

Dynamics of Dipolar Spinor Bose-Einstein Condensates;Collaboration;OUTLINE;Laser Cooling Evaporative Cooling BEC;Only low-field seekers are magnetically trappable!;; T.-L. Ho, Phys. Rev. Lett, 81 742 (1998). T. Ohmi and K. Machida, J. Phys. Soc. Jpn. 67 1822 (1998).;Spinor-1 condensate; Two conserved quantities (1) total atom numbers (2) total hyperfine spin ;The intrinsic magnetic dipole moment of an atom is related to its total angular momentum as , with F being the angular momentum operator.;Dipolar Spinor Condensates;Experimental Advances;Higher Hyperfine Spin Condensates;;; MQT (macroscopic quantum tunneling): the atomic population is periodically exchanged which is analogous to the Josephson sinusoidal oscillation. ;M. Albiez, R. Gati, J. Folling, S. Hunsmann, M. Cristiani, and M. K. Oberthaler, Phys. Rev. Lett. 95, 010402(2005).;Spin mixing dynamics: Model;Equation of Motion;Non-rigid pendulum;time ;time ;The distinction between the two dynamical regimes --MQT and MQST-- becomes apparent here. In the former regime the dynamical variables follow a closed phase space trajectory, while, in the latter they follow an open trajectory with an unbound phase.;We show, the dynamics is sensitive not only to the spin-exchange interaction (SEI) and magnetic dipole-dipole interaction (MDDI) but also to the initial atom number distribution and relative phase among three components of the condensate.;Thanks!;9、春去春又回，新桃换旧符。在那桃花盛开的地方，在这醉人芬芳的季节，愿你生活像春天一样阳光，心情像桃花一样美丽，日子像桃子一样甜蜜。5月-215月-21Tuesday, May 25, 2021 10、人的志向通常和他们的能力成正比例。05:02:4305:02:4305:025/25/2021 5:02:43 AM 11、夫学须志也，才须学也，非学无以广才，非志无以成学。5月-2105:02:4305:02May-2125-May-21 12、越是无能的人，越喜欢挑剔别人的错儿。05:02:4305:02:4305:02Tuesday, May 25, 2021 13、志不立，天下无可成之事。5月-215月-2105:02:4305:02:43May 25, 2021 14、Thank you very much for taking me with you on that splendid outing to London. It was the first time that I had seen the Tower or any of the other famous sights. If Id gone alone, I couldnt ha