Controlling magnetic Feshbach resonances in polar open-shell molecules with nonresonant light.
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 nonresonant light can be used to engineer the Feshbach resonances in their position and width. For nonresonant field intensities of the order of 10(9) W/cm(2), we find the width to be increased by 3 orders of magnitude, reaching a few Gauss. This opens the way for producing ultracold molecules with sizable electric and magnetic dipole moments and thus for many-body quantum simulations with such particles.
Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland and Instituto 'Carlos I' de Física Teórica y Computacional and Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, 18071 Granada, Spain and Theoretische Physik, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany.
Michał
M
Tomza
Instituto 'Carlos I' de Física Teórica y Computacional and Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, 18071 Granada, Spain and The Hamburg Center for Ultrafast Imaging, University of Hamburg, 22761 Hamburg, Germany.
Rosario
R
González-Férez
Theoretische Physik, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany.
Christiane P
CP
Koch
Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland.
Robert
R
Moszynski