Coherent molecule formation in anharmonic potentials near confinement-induced resonances
arXiv:1303.1844 · doi:10.1103/PhysRevLett.110.203202
Abstract
We perform a theoretical and experimental study of a system of two ultracold atoms with tunable interaction in an elongated trapping potential. We show that the coupling of center-of-mass and relative motion due to an anharmonicity of the trapping potential leads to a coherent coupling of a state of an unbound atom pair and a molecule with a center of mass excitation. By performing the experiment with exactly two particles we exclude three-body losses and can therefore directly observe coherent molecule formation. We find quantitative agreement between our theory of inelastic confinement-induced resonances and the experimental results. This shows that the effects of center-of-mass to relative motion coupling can have a significant impact on the physics of quasi-1D quantum systems.
arXiv comment7 pages, 4 figures
References in corpus (27)
- Feshbach Resonances in Ultracold Gases
- Atomic Scattering in Presence of an External Confinement and a Gas of Impenetrable Bosons
- Realization of an Excited, Strongly-Correlated Quantum Gas Phase
- Deterministic Preparation of a Tunable Few-Fermion System
- Atom-Atom Scattering Under Cylindrical Harmonic Confinement: Numerical and Analytical Studies of the Confinement Induced Resonance
- Ultracold heteronuclear molecules in a 3D optical lattice
- Fermionization of two distinguishable fermions
- Molecules of Fermionic Atoms in an Optical Lattice
- Confinement-Induced Resonances in Low-Dimensional Quantum Systems
- Pinning quantum phase transition for a Luttinger liquid of strongly interacting bosons
- Precise characterization of ^6Li Feshbach resonances using trap-sideband resolved RF spectroscopy of weakly bound molecules
- Scattering in Mixed Dimensions with Ultracold Gases
- Analytical solutions for the dynamics of two trapped interacting ultracold atoms
- Inelastic Confinement-Induced Resonances in Low-Dimensional Quantum Systems
- Confinement-induced resonances for a two-component ultracold atom gas in arbitrary quasi-one-dimensional traps
- Confinement induced resonances in anharmonic waveguides
- Ab-initio determination of Bose-Hubbard parameters for two ultracold atoms in an optical lattice using a three-well potential
- Quantum dynamics of resonant molecule formation in waveguides
- Confinement-induced resonance in quasi-one-dimensional systems under transversely anisotropic confinement
- Atom-molecule Rabi oscillations in a Mott insulator
- Confinement-induced Resonances in Quasi-one-dimensional Traps with Transverse Anisotropy
- Exact theoretical description of two ultracold atoms in a single site of a 3D optical lattice using realistic interatomic interaction potentials
- Anharmonicity Induced Resonances for Ultracold Atoms and their Detection
- Multichannel Effects near Confinement-Induced Resonances in Harmonic Waveguides
- Theoretical description of two ultracold atoms in finite 3D optical lattices using realistic interatomic interaction potentials
- Quasi-one-dimensional scattering in a discrete model
- Mimicking multi-channel scattering with single-channel approaches
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- From Few to Many: Observing the Formation of a Fermi Sea One Atom at a Time
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- Pairing in few-fermion systems with attractive interactions
- Quantum magnetism without lattices in strongly interacting one-dimensional spinor gases
- One-dimensional mixtures of several ultracold atoms: a review
- Fermionization of two-component few-fermion systems in a one-dimensional harmonic trap
- Few-body Bose gases in low dimensions -- a laboratory for quantum dynamics
- Formation of ultracold molecules by merging optical tweezers
- Quench-induced resonant tunneling mechanisms of bosons in an optical lattice with harmonic confinement
- Quantum Register of Fermion Pairs
- Pinpointing Feshbach Resonances and Testing Efimov Universalities in K
- Tunneling dynamics of two interacting one-dimensional particles
- Stretching p-wave molecules by transverse confinements
- Theory of inelastic confinement-induced resonances due to the coupling of center-of-mass and relative motion
- Observation of trap-assisted formation of atom-ion bound states
- Reactive collisions in confined geometries
- Effective many-body parameters for atoms in non-separable Gaussian optical potentials
- Energy dependent -wave confinement-induced resonances
- Mott-Insulator-Aided Detection of Ultra-Narrow Feshbach Resonances
- Quasi-1D scattering with general transverse 2D confinement
- Improving Efficiency of Sympathetic Cooling in Atom-Ion and Atom-Atom Confined Collisions
- Single-atom transistor as a precise magnetic field sensor
- Emergent s-wave interactions between identical fermions in quasi-one-dimensional geometries
- Observation of confinement-induced resonances in a 3D lattice
- Atom Pairing in Optical Superlattices
- Molecular branch of a small highly-elongated Fermi gas with an impurity: Full three-dimensional versus effective one-dimensional description
- Spin dynamics dominated by superexchange via virtual molecules
- Analytical solution for the spectrum of two ultracold atoms in a completely anisotropic confinement
- Ultrastable super-Tonks-Girardeau gases under weak dipolar interactions
- Feshbach Spectroscopy of Cs Atom Pairs in Optical Tweezers
- Multichannel Scattering and Loss Processes of Ultracold Atoms in Anisotropic Harmonic Waveguides
- Ultracold atoms in quasi-1D traps: a step beyond the Lieb-Liniger model
- Experimentally accessible invariants encoded in interparticle correlations of harmonically trapped ultra-cold few-fermion mixtures
- Two-channel Bose-Hubbard model of atoms at a Feshbach resonance
- Impact of overlapping resonances on magnetoassociation of cold molecules in tight traps
- Photon-assisted confinement-induced resonances for ultracold atoms
- Confinement Induced Resonance with Weak Bare Interaction in a Quasi 3+0 Dimensional Ultracold Gas
- Bound and scattering states in harmonic waveguides in the vicinity of free space Feshbach resonances
- Confinement induced interlayer molecules: a route to strong interatomic interactions
- Universal energy-dependent pseudopotential for the two-body problem of confined ultracold atoms
- Precise Feshbach resonance spectroscopy using tight anharmonic traps
- Universality and tails of long range interactions in one dimension
- Photoassociative cooling and trapping of a pair of interacting atoms
- Anharmonicity-Induced Criticality of Collective Excitation in a Trapped Bose-Einstein Condensate
- Confinement-induced resonances for the creation of quasi-one-dimensional ultra cold gases of alkali--alkaline-earth dimers
- Dipolar confinement-induced molecular states in harmonic waveguides
- Molecular excited state in the interaction quench dynamics of two different atoms in a two-dimensional anisotropic trap