Feshbach-optimized photoassociation of ultracold ${}^6$Li${}^{87}$Rb molecules with short pulses

Abstract

Two-color photoassociation of ground state ${}^6$Li${}^{87}$Rb molecules via the ${\mathrm{B}}^1\Pi$ electronic state using short pulses near a magnetic Feshbach resonance is studied theoretically. A near-resonant magnetic field is applied to mix the hyperfine singlet and triplet components of the initial wave function and enhance the photoassociation rate, before the population is transferred to the ground state by a second pulse. We show that an increase of up to three orders of magnitude in the absolute number of molecules produced is attainable for deeply bound vibrational levels. This technique can be generalized to other molecules with accessible magnetic Feshbach resonances.

11 pages, 10 figures; submitted to Phys. Rev. A

References in corpus (15)

• A High Phase-Space-Density Gas of Polar Molecules
• Strongly correlated 2D quantum phases with cold polar molecules: controlling the shape of the interaction potential
• Ultracold Molecules in the Ro-Vibrational Triplet Ground State
• Schemes for robust quantum computation with polar molecules
• Molecule formation in ultracold atomic gases
• Giant formation rates of ultracold molecules via Feshbach Optimized Photoassociation
• Making ultracold molecules in a two color pump-dump photoassociation scheme using chirped pulses
• Photoassociation of a Bose-Einstein Condensate near a Feshbach Resonance
• Feshbach resonances in mixtures of ultracold ${}^6$Li and ${}^{87}$Rb gases
• Crystalline phase of strongly interacting Fermi mixtures
• Feshbach resonances in an ultracold ${}^7$Li and ${}^{87}$Rb mixture
• Feshbach resonances in ultracold 85Rb-87Rb and 6Li-87Rb mixtures
• High resolution photoassociation spectroscopy of the ${}^6$Li${}_2$ $1^3{\Sigma }_g^{+}$ state
• Formation of deeply bound molecules via chainwise adiabatic passage
• Effects of Electric Fields on Heteronuclear Feshbach Resonances in Ultracold ${}^6\mathrm{Li}{-}^{87}\mathrm{Rb}$ Mixtures

Cited by in corpus (7)

• Strongly interacting ultracold polar molecules
• Two-photon photoassociation spectroscopy of an ultracold heteronuclear molecule
• Photoassociation of ultracold long-range polyatomic molecules
• Formation of deeply bound ultracold LiRb molecules via photoassociation near the Li 2S${}_{1/2}$ + Rb 5P${}_{3/2}$ asymptote
• Photoassociation of ultracold molecules near a Feshbach resonance as a probe of the electron-proton mass ratio variation
• Quantum Defect Theory description of weakly bound levels and Feshbach resonances in LiRb
• Formation of deeply bound polar molecules combining pump-dump pulses with infrared radiation