Progress on direct photoassociation of halo molecules in ultracold $^{86}$ SrProgress on direct photoassociation of halo molecules in ultracold $^{86}$Sr

James Aman, Joshua C. Hill, Roger Ding +2 more

Bulletin of the American Physical SocietyMay 30, 20180 citations

Strong Photoassociation in Ultracold Fermions

Jing Li, Alan O. Jamison, Timur M. Rvachov +5 more

Bulletin of the American Physical SocietyMay 25, 20160 citations

Direct photoassociation of halo molecules in ultracold 86 Sr

J. A. Aman, Joshua C. Hill, T. C. Killian

Bulletin of the American Physical SocietyJun 6, 20170 citations

Formation of deeply bound ultracold Sr 2 molecules by photoassociation near the 1S+3P1 intercombination line

Wojciech Skomorowski, Robert Moszyński, Christiane P. Koch

We predict feasibility of the photoassociative formation of Sr ${}_{2}$ molecules in arbitrary vibrational levels of the electronic ground state based on state-of-the-art ab initio calculations. Key is the strong spin-orbit interaction between the $c\phantom{\rule{0.16em}{0ex}}$ ${}^{3}\phantom{\rule{-0.16em}{0ex}}{\ensuremath{\Pi}}_{u}$, $A\phantom{\rule{0.16em}{0ex}}$ ${}^{1}\phantom{\rule{-0.16em}{0ex}}{\ensuremath{\Sigma}}_{u}^{+}$, and $B\phantom{\rule{0.16em}{0ex}}$ ${}^{1}\phantom{\rule{-0.16em}{0ex}}{\ensuremath{\Sigma}}_{u}^{+}$ states. It creates not only an effective dipole moment allowing free-to-bound transitions near the ${}^{1}\phantom{\rule{-0.16em}{0ex}}S+{}^{3}\phantom{\rule{-0.16em}{0ex}}{P}_{1}$ intercombination line but also facilitates bound-to-bound transitions via resonantly coupled excited-state levels to deeply bound levels of the ground $X\phantom{\rule{0.16em}{0ex}}$ ${}^{1}\phantom{\rule{-0.16em}{0ex}}{\ensuremath{\Sigma}}_{g}^{+}$ potential, with ${v}^{\ensuremath{'}\ensuremath{'}}$ as low as ${v}^{\ensuremath{'}\ensuremath{'}}=6$. The spin-orbit interaction is responsible for both optical pathways. Therefore, those excited-state levels that have the largest bound-to-bound transition moments to deeply bound ground-state levels also exhibit a sufficient photoassociation probability, comparable to that of the lowest weakly bound excited-state level previously observed by Zelevinsky et al. [Phys. Rev. Lett. 96, 203201 (2006)]. Our study paves the way for an efficient photoassociative production of Sr ${}_{2}$ molecules in ground-state levels suitable for experiments testing the electron-to-proton mass ratio.We predict feasibility of the photoassociative formation of Sr${}_{2}$ molecules in arbitrary vibrational levels of the electronic ground state based on state-of-the-art ab initio calculations. Key is the strong spin-orbit interaction between the $c\phantom{\rule{0.16em}{0ex}}$${}^{3}\phantom{\rule{-0.16em}{0ex}}{\ensuremath{\Pi}}_{u}$, $A\phantom{\rule{0.16em}{0ex}}$${}^{1}\phantom{\rule{-0.16em}{0ex}}{\ensuremath{\Sigma}}_{u}^{+}$, and $B\phantom{\rule{0.16em}{0ex}}$${}^{1}\phantom{\rule{-0.16em}{0ex}}{\ensuremath{\Sigma}}_{u}^{+}$ states. It creates not only an effective dipole moment allowing free-to-bound transitions near the ${}^{1}\phantom{\rule{-0.16em}{0ex}}S+{}^{3}\phantom{\rule{-0.16em}{0ex}}{P}_{1}$ intercombination line but also facilitates bound-to-bound transitions via resonantly coupled excited-state levels to deeply bound levels of the ground $X\phantom{\rule{0.16em}{0ex}}$${}^{1}\phantom{\rule{-0.16em}{0ex}}{\ensuremath{\Sigma}}_{g}^{+}$ potential, with ${v}^{\ensuremath{'}\ensuremath{'}}$ as low as ${v}^{\ensuremath{'}\ensuremath{'}}=6$. The spin-orbit interaction is responsible for both optical pathways. Therefore, those excited-state levels that have the largest bound-to-bound transition moments to deeply bound ground-state levels also exhibit a sufficient photoassociation probability, comparable to that of the lowest weakly bound excited-state level previously observed by Zelevinsky et al. [Phys. Rev. Lett. 96, 203201 (2006)]. Our study paves the way for an efficient photoassociative production of Sr${}_{2}$ molecules in ground-state levels suitable for experiments testing the electron-to-proton mass ratio.

arXiv:1203.4552Physical Review AApr 17, 201228 citations

Progress on direct photoassociation of halo molecules in ultracold

^{86}

We predict feasibility of the photoassociative formation of Sr

{}_{2}

molecules in arbitrary vibrational levels of the electronic ground state based on state-of-the-art ab initio calculations. Key is the strong spin-orbit interaction between the

c\phantom{\rule{0.16em}{0ex}}

${}^{3}\phantom{\rule{-0.16em}{0ex}}{\ensuremath{\Pi}}_{u}$,

A\phantom{\rule{0.16em}{0ex}}

${}^{1}\phantom{\rule{-0.16em}{0ex}}{\ensuremath{\Sigma}}_{u}^{+}$, and

B\phantom{\rule{0.16em}{0ex}}

${}^{1}\phantom{\rule{-0.16em}{0ex}}{\ensuremath{\Sigma}}_{u}^{+}$ states. It creates not only an effective dipole moment allowing free-to-bound transitions near the

{}^{1}\phantom{\rule{-0.16em}{0ex}}S+{}^{3}\phantom{\rule{-0.16em}{0ex}}{P}_{1}

intercombination line but also facilitates bound-to-bound transitions via resonantly coupled excited-state levels to deeply bound levels of the ground

X\phantom{\rule{0.16em}{0ex}}

${}^{1}\phantom{\rule{-0.16em}{0ex}}{\ensuremath{\Sigma}}_{g}^{+}$ potential, with ${v}^{\ensuremath{'}\ensuremath{'}}$ as low as ${v}^{\ensuremath{'}\ensuremath{'}}=6$. The spin-orbit interaction is responsible for both optical pathways. Therefore, those excited-state levels that have the largest bound-to-bound transition moments to deeply bound ground-state levels also exhibit a sufficient photoassociation probability, comparable to that of the lowest weakly bound excited-state level previously observed by Zelevinsky et al. [Phys. Rev. Lett. 96, 203201 (2006)]. Our study paves the way for an efficient photoassociative production of Sr

{}_{2}

molecules in ground-state levels suitable for experiments testing the electron-to-proton mass ratio.