Hyperfine dependent atom-molecule loss analyzed by the analytic solution of few-body loss equations

Abstract

We prepare mixtures of ultracold ${}^{39}$K atoms in various hyperfine spin states and ${}^{23}$Na${}^{39}$K molecules in an optical dipole trap at a fixed magnetic field and study inelastic two-body atom-molecule collisions. We observe atom-molecule losses that are hyperfine dependent with a two-body loss rate far below the universal limit. We analyze the two-body loss dynamics based on the derivation of general and easy applicable analytic solutions for the differential equations describing the loss of an arbitrary number $\gamma$ of particles in a single collisional event.

References in corpus (28)

• Feshbach Resonances in Ultracold Gases
• A High Phase-Space-Density Gas of Polar Molecules
• Quantum-State Controlled Chemical Reactions of Ultracold KRb Molecules
• Quantum Mechanical Stabilization of a Collapsing Bose-Bose Mixture
• Quantum liquid droplets in a mixture of Bose-Einstein condensates
• Atom--Molecule Coherence in a Bose-Einstein Condensate
• Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state
• Ultracold Dipolar Gas of Fermionic ${}^{23}$Na${}^{40}$K Molecules in their Absolute Ground State
• Creation of ultracold ${}^{87}$RbCs molecules in the rovibrational ground state
• Creation of an ultracold gas of ground-state ${}^{23}{\mathrm{Na}}^{87}\mathrm{Rb}$ molecules
• Reactions of ultracold alkali metal dimers
• 39-K Bose-Einstein condensate with tunable interactions
• Long-Lived Ultracold Molecules with Electric and Magnetic Dipole Moments
• Direct observation of bimolecular reactions of ultracold KRb molecules
• Observation of magnetically tunable Feshbach resonances in ultracold ${}^{23}$Na${}^{40}$K+${}^{40}$K collisions
• Statistical Aspects of Ultracold Resonant Scattering
• Photo-induced two-body loss of ultracold molecules
• Sticky collisions of ultracold RbCs molecules
• Collisional Cooling of Ultracold Molecules
• Dipolar Relaxation in an ultra-cold Gas of magnetically trapped chromium atoms
• Loss of ultracold RbCs molecules via optical excitation of long-lived two-body collision complexes
• Universal ultracold collision rates for polar molecules of two alkali-metal atoms
• Collisions of ultracold molecules in bright and dark optical dipole traps
• Probing photoinduced two-body loss of ultracold non-reactive bosonic ${}^{23}$Na${}^{87}$Rb and ${}^{23}$Na${}^{39}$K molecules
• Surface-induced heating of cold polar molecules
• Feshbach spectroscopy and dual-species Bose-Einstein condensation of ${}^{23}\mathrm{Na}-$${}^{39}\mathrm{K}$ mixtures
• Magnetic Feshbach resonances in collisions of ${}^{23}$Na${}^{40}$K with ${}^{40}$K
• Formation of ultracold weakly bound dimers of bosonic ${}^{23}{\text{Na}}^{39}\text{K}$

Cited by in corpus (7)

• Ultracold Sticky Collisions: Theoretical and Experimental Status
• Complexes formed in collisions between ultracold alkali-metal diatomic molecules and atoms
• Ab initio calculation of the spectrum of Feshbach resonances in NaLi + Na collisions
• Ultracold Interactions between Ions and Polar Molecules
• Molecule-molecule and atom-molecule collisions with ultracold RbCs molecules
• Rigorous quantum calculations for atom-molecule chemical reactions in electric fields: from single to multiple partial wave regimes
• Optical formation of ultracold NaK${}_2$ ground state molecules