Shielding collisions of ultracold CaF molecules with static electric fields

Shielding collisions of ultracold CaF molecules with static electric fields
复制标题

屏蔽超冷 CaF 分子与静电场的碰撞

DOI:
10.1103/physrevresearch.5.033097
复制
发表时间:
2023
影响因子:
4.2
通讯作者:
Mukherjee B
Mukherjee B
中科院分区:
--
文献类型:
--
作者:
Mukherjee B

文献摘要

参考文献

被引文献

相似文献

我们研究了超冷CaF分子在强静电场中的碰撞。这些场允许在相互作用势中产生长程势垒,有效地防止分子到达可能发生非弹性和其他损失过程的短程区域。我们进行耦合通道的弹性散射和损耗率系数的计算。我们开发了一个有效的程序,包括大力分离转子功能的基础上通过货车Vleck变换。我们表明,屏蔽是特别有效的CaF,并允许率的两体损失过程中减少了一个因素ofor更多的在23 kV/cm的字段。在相当多的领域,损失率仍然很低。电子和核自旋在某些小范围的场中引起强烈的附加损失,但在其他地方几乎没有影响。这些结果为CaF的蒸发冷却向量子简并方向发展铺平了道路。
We study collisions of ultracold CaF molecules in strong static electric fields. These fields allow the creation of long-range barriers in the interaction potential, effectively preventing the molecules from reaching the short-range region where inelastic and other loss processes are likely to occur. We carry out coupled-channel calculations of rate coefficients for elastic scattering and loss. We develop an efficient procedure for including energetically well-separated rotor functions in the basis set via a Van Vleck transformation. We show that shielding is particularly efficient for CaF and allows the rate of two-body loss processes to be reduced by a factor ofor more at a field of 23 kV/cm. The loss rates remain low over a substantial range of fields. Electron and nuclear spins cause strong additional loss in some small ranges of field, but have little effect elsewhere. These results pave the way for evaporative cooling of CaF towards quantum degeneracy.
DOI: 10.1038/nphys4241
发表时间: 2017-03
期刊: Nature Physics
影响因子: 19.6
作者:
S. Truppe;H. Williams;M. Hambach;L. Caldwell;N. Fitch;E. Hinds;B. Sauer;M. Tarbutt
通讯作者: S. Truppe;H. Williams;M. Hambach;L. Caldwell;N. Fitch;E. Hinds;B. Sauer;M. Tarbutt
DOI: 10.1103/physrevlett.124.063001
发表时间: 2019-08
影响因子: 8.6
作者:
L. Caldwell;H. Williams;N. Fitch;J. Aldegunde;J. Hutson;B. Sauer;M. Tarbutt
通讯作者: L. Caldwell;H. Williams;N. Fitch;J. Aldegunde;J. Hutson;B. Sauer;M. Tarbutt
从经典玻璃到具有超冷极性分子的量子玻璃。
DOI: --
发表时间: 2013
影响因子: 8.6
作者:
W. Lechner;P. Zoller
通讯作者: P. Zoller
DOI: --
发表时间: 1937
期刊:
影响因子: --
作者:
E. C. Kemble
通讯作者: E. C. Kemble
偶极-偶极相互作用的近阈值束缚态
DOI: --
发表时间: 2018
期刊: Physical Review A
影响因子: 2.9
作者:
T. Karman;Matthew D. Frye;J. Reddel;J. Hutson
通讯作者: J. Hutson