The role of electronic excitation in cold atom-ion chemistry

Abstract

The role of electronic excitation in charge exchange chemical reactions between ultracold Ca atoms and Ba${}^{+}$ ions, confined in a hybrid trap, is studied. This prototypical system is energetically precluded from reacting in its ground state, allowing a particularly simple interpretation of the influence of electronic excitation. It is found that while electronic excitation of the ion can critically influence the chemical reaction rate, electronic excitation of the neutral atom is less important. It is also experimentally demonstrated that with the correct choice of the atom-ion pair, it is possible to mitigate the unwanted effects of these chemical reactions in ultracold atom-ion environments, marking an important step towards the next generation of hybrid devices.

References in corpus (9)

• Quantum Computing
• Laser cooling of a diatomic molecule
• A trapped single ion inside a Bose-Einstein condensate
• Dynamics of a cold trapped ion in a Bose-Einstein condensate
• Light-assisted ion-neutral reactive processes in the cold regime: radiative molecule formation vs. charge exchange
• Controlling chemical reactions of a single particle
• Cold heteronuclear atom-ion collisions
• Molecular ion trap-depletion spectroscopy of BaCl${}^{+}$
• Trapping molecular ions formed via photo-associative ionization of ultracold atoms

Cited by in corpus (39)

• Cold hybrid ion-atom systems
• Controlling chemical reactions of a single particle
• Cold atom-ion experiments in hybrid traps
• Energy scaling of cold atom-atom-ion three-body recombination
• Decoherence of a single-ion qubit immersed in a spin-polarized atomic bath
• Cold interactions between an Yb${}^{+}$ ion and a Li atom: Prospects for sympathetic cooling, radiative association, and Feshbach resonances
• Light-Assisted Cold Chemical Reactions of Barium Ions with Rubidium Atoms
• Neutral gas sympathetic cooling of an ion in a Paul trap
• Observation of collisions between cold Li atoms and Yb${}^{+}$ ions
• Formation of molecular ions by radiative association of cold trapped atoms and ions
• Characterization of charge-exchange collisions between ultracold ${}^6\mathrm{Li}$ atoms and ${}^{40}\mathrm{C}{\mathrm{a}}^{+}$ ions
• Rydberg molecules for ion-atom scattering in the ultracold regime
• Interactions and chemical reactions in ionic alkali-metal and alkaline-earth-metal diatomic $A{B}^{+}$ and triatomic $A_2{B}^{+}$ systems
• Dynamics of a single ion spin impurity in a spin-polarized atomic bath
• Laser-cooling-assisted mass spectrometry
• Reactive two-body and three-body collisions of Ba${}^{+}$ in an ultracold Rb gas
• Charge transfer in the cold Yb${}^{+}$ + Rb collisions
• Prospects of reaching the quantum regime in Li-Yb${}^{+}$ mixtures
• Spin-orbit interactions and quantum spin dynamics in cold ion-atom collisions
• Measurement of low-energy Na^+ -- Na total collision rate in an ion--neutral hybrid trap
• Ab initio electronic structure and prospects for the formation of ultracold calcium--alkali-metal-atom molecular ions
• Ultracold magnetically tunable interactions without radiative charge transfer losses between Ca${}^{+}$, Sr${}^{+}$, Ba${}^{+}$, and Yb${}^{+}$ ions and Cr atoms
• Cold ion-atom chemistry driven by spontaneous radiative relaxation: a case study for the formation of the YbCa^{+} molecular ion
• Ion trap with integrated time-of-flight mass spectrometer
• Interactions and low energy collisions between an alkali ion and an alkali atom of different nucleus
• Model-independent measurements of the sodium magneto-optical trap's excited-state population
• Rotational state-changing collisions between N${}_2^{+}$ and Rb at low energies
• Photon-mediated charge-exchange reactions between 39K atoms and 40Ca+ ions in a hybrid trap
• Ion loss events in a cold Rb-Ca${}^{+}$ hybrid trap: photodissociation, black-body radiation and non-radiative charge exchange
• Excitation-assisted nonadiabatic charge-transfer reaction in a mixed atom-ion system
• Action spectroscopy of SrCl${}^{+}$ using an integrated ion trap time-of-flight mass spectrometer
• High-resolution collision energy control through ion position modulation in atom-ion hybrid systems
• Measurement of charge-exchange between Na and \ce{Ca+} in a hybrid trap
• Laser controlled charge-transfer reaction at low temperatures
• Interactions and charge transfer dynamics of an Al${}^{+}$ ion immersed in ultracold Rb and Sr atoms
• Bound states of an ultracold atom interacting with a set of stationary impurities
• Roaming pathways and survival probability in real-time collisional dynamics of cold and controlled bialkali molecules
• A versatile apparatus for simultaneous trapping of multiple species of ultracold atoms and ions to enable studies of low energy collisions and cold chemistry
• Quantum reactive scattering in the long-range ion-dipole potential