Controlling magnetic Feshbach resonances in polar open-shell molecules with non-resonant light

Abstract

Magnetically tunable Feshbach resonances for polar paramagnetic ground-state diatomics are too narrow to allow for magnetoassociation starting from trapped, ultracold atoms. We show that non-resonant light can be used to engineer the Feshbach resonances in their position and width. For non-resonant field strengths of the order of $10^9$W/cm${}^2$, we find the width to be increased by three orders of magnitude, reaching a few Gauss. This opens the way for producing ultracold molecules with sizeable electric and magnetic dipole moments and thus for many-body quantum simulations with such particles.

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• Ultracold magnetically tunable interactions without radiative charge transfer losses between Ca${}^{+}$, Sr${}^{+}$, Ba${}^{+}$, and Yb${}^{+}$ ions and Cr atoms
• Droplet Arrays in Doubly-Dipolar Bose-Einstein condensates
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• Magnetically tunable Feshbach resonances in ultracold gases of europium atoms and mixtures of europium and alkali-metal atoms
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• Magnetic control of ultra-cold ${}^6$Li and ${}^{174}$Yb(${}^3{P}_2$) atom mixtures with Feshbach resonances
• Laser-Assisted Self-Induced Feshbach resonance for ultracold polar molecule formation
• Asymptotic model for shape resonance control of diatomics by intense non-resonant light
• Controlling the s-wave scattering length with non-resonant light: Predictions of an asymptotic model
• Combining Slater-type orbitals and effective core potentials
• Asymptotic model for shape resonance control of diatomics by intense non-resonant light: Universality in the single-channel approximation
• Controlling ultracold $p$-wave collisions with non-resonant light: Predictions of an asymptotic model for the generalized scattering volume
• Impact of overlapping resonances on magnetoassociation of cold molecules in tight traps
• Interactions and charge transfer dynamics of an Al${}^{+}$ ion immersed in ultracold Rb and Sr atoms