Buffer gas cooling of a trapped ion to the quantum regime

Abstract

Great advances in precision quantum measurement have been achieved with trapped ions and atomic gases at the lowest possible temperatures. These successes have inspired ideas to merge the two systems. In this way one can study the unique properties of ionic impurities inside a quantum fluid or explore buffer gas cooling of the trapped ion quantum computer. Remarkably, in spite of its importance, experiments with atom-ion mixtures remained firmly confined to the classical collision regime. We report a collision energy of 1.15(0.23) times the $s$-wave energy (or 9.9(2.0)~$\mu$K) for a trapped ytterbium ion in an ultracold lithium gas. We observed a deviation from classical Langevin theory by studying the spin-exchange dynamics, indicating quantum behavior in the atom-ion collisions. Our results open up numerous opportunities, such as the exploration of atom-ion Feshbach resonances, in analogy to neutral systems.

8 pages, 6 figures including appendices

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• A trapped single ion inside a Bose-Einstein condensate
• Power-Law Distributions for a Trapped Ion Interacting with a Classical Buffer Gas
• Cold interactions between an Yb${}^{+}$ ion and a Li atom: Prospects for sympathetic cooling, radiative association, and Feshbach resonances
• Observation of collisions between cold Li atoms and Yb${}^{+}$ ions
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Cited by in corpus (60)

• Observation of Feshbach resonances between a single ion and ultracold atoms
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• Transport of a single cold ion immersed in a Bose-Einstein condensate
• Charged polarons and molecules in a Bose-Einstein Condensate
• Cold trapped molecular ions and hybrid platforms for ions and neutral particles
• Observation of Chemical Reactions between a Trapped Ion and Ultracold Feshbach Dimers
• Long-range atom-ion Rydberg molecule: A novel molecular binding mechanism
• A pulsed ion microscope to probe quantum gases
• Many-body bound states and induced interactions of charged impurities in a bosonic bath
• Inelastic collision dynamics of a single cold ion immersed in a Bose-Einstein condensate
• Three-body recombination in physical chemistry
• Scalable hyperfine qubit state detection via electron shelving in the ${}^2$D${}_{5/2}$ and ${}^2$F${}_{7/2}$ manifolds in ${}^{171}$Yb${}^{+}$
• Mediated interactions between ions in quantum degenerate gases
• Ab initio electronic structure and prospects for the formation of ultracold calcium--alkali-metal-atom molecular ions
• Observation of trap-assisted formation of atom-ion bound states
• Trapping, Shaping and Isolating of Ion Coulomb Crystals via State-selective Optical Potentials
• Quantum-Logic Detection of Chemical Reactions
• Controlling the nature of a charged impurity in a bath of Feshbach dimers
• Quantum-limited thermometry of a Fermi gas with a charged spin particle
• Quantum simulation of extended polaron models using compound atom-ion systems
• Buffer gas cooling of ions in time-dependent traps using ultracold atoms
• High-energy-resolution measurement of ultracold atom-ion collisional cross section
• Improving Efficiency of Sympathetic Cooling in Atom-Ion and Atom-Atom Confined Collisions
• Ultracold ion-atom experiments: cooling, chemistry, and quantum effects
• Dynamics of a trapped ion in a quantum gas: effects of particle statistics
• Electric field analysis in a cold-ion source using Stark spectroscopy of Rydberg atoms
• Experimental setup for studying an ultracold mixture of trapped Yb${}^{+}$-${}^6$Li
• A mobile ion in a Fermi sea
• Ion loss events in a cold Rb-Ca${}^{+}$ hybrid trap: photodissociation, black-body radiation and non-radiative charge exchange
• Interaction potentials and ultracold scattering cross sections for the ${}^7$Li${}^{+}$-${}^7$Li ion-atom system
• Modified mean field ansatz for charged polarons in a Bose-Einstein condensate
• Ab initio potential energy curves, scattering lengths, and rovibrational levels of the He${}_2^{+}$ molecular ion in excited electronic states
• Micromotion minimization using Ramsey interferometry
• Charged ultralong-range Rydberg trimers
• Quantum control of ion-atom collisions beyond the ultracold regime
• Spectral properties of a three body atom-ion hybrid system
• Motional state analysis of a trapped ion by ultra-narrowband composite pulses
• Interactions and charge transfer dynamics of an Al${}^{+}$ ion immersed in ultracold Rb and Sr atoms
• Geometric phase gates in dissipative quantum dynamics
• Exploring atom-ion Feshbach resonances below the s-wave limit
• Observation of quantum capture in an ion-molecule reaction
• Vibrational quenching of cold molecular ions immersed in their parent gas
• Interactions of Ions and Ultracold Neutral Atom Ensembles in Composite Optical Dipole Traps: Developments and Perspectives
• Ultracold Interactions between Ions and Polar Molecules
• Cold collisions between alkali and alkaline-earth hetero nuclear atom-ion system Li + Ba${}^{+}$
• Cold hybrid electrical-optical ion trap
• Chaotic scattering and heating in cold ion-atom collisions: two sides of the same coin
• Bound states of an ultracold atom interacting with a set of stationary impurities
• Phonon-mediated quantum gates in trapped ions coupled to an ultracold atomic gas
• Ultracold collisions of a neutral atom with a trapped ion in 1D
• Quantum suppression of cold reactions far from the s-wave energy limit
• Cooling dynamics of a free ion in a Bose-Einstein condensate
• Adaptable platform for trapped cold electrons, hydrogen and lithium anions and cations
• A versatile apparatus for simultaneous trapping of multiple species of ultracold atoms and ions to enable studies of low energy collisions and cold chemistry
• Long-lived metastable states in the 4f${}^{13}$5d6s configuration of Yb${}^{+}$
• Fast Single-shot Imaging of Individual Ions via Homodyne Detection of Rydberg-Blockade-Induced Absorption
• Quantum reactive scattering in the long-range ion-dipole potential
• Universality in Ionic Three-body Systems Near an Ion-atom Feshbach Resonance
• A New Mechanism for Sympathetic Cooling of Atoms and Ions in Atomic and Ion-Atomic Traps