Molecular spectroscopy for ground-state transfer of ultracold RbCs molecules

Abstract

We perform one- and two-photon high resolution spectroscopy on ultracold samples of RbCs Feshbach molecules with the aim to identify a suitable route for efficient ground-state transfer in the quantum-gas regime to produce quantum gases of dipolar RbCs ground-state molecules. One-photon loss spectroscopy allows us to probe deeply bound rovibrational levels of the mixed excited (A1Σ+ - b3Π0) 0+ molecular states. Two-photon dark state spectroscopy connects the initial Feshbach state to the rovibronic ground state. We determine the binding energy of the lowest rovibrational level |v"=0,J"=0> of the X1Σ+ ground state to be DX 0 = 3811.5755(16) 1/cm, a 300-fold improvement in accuracy with respect to previous data. We are now in the position to perform stimulated two-photon Raman transfer to the rovibronic ground state.

Submitted to PCCP themed issue: Physics and Chemistry of Cold Molecules

References in corpus (18)

• 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
• Quantum Gas of Deeply Bound Ground State Molecules
• Ultracold Molecules in the Ro-Vibrational Triplet Ground State
• Observation of molecules produced from a Bose-Einstein condensate
• Formation of Quantum-Degenerate Sodium Molecules
• Reactions of ultracold alkali metal dimers
• Stable Topological Superfluid Phase of Ultracold Polar Fermionic Molecules
• Metastable states of a gas of dipolar bosons in a 2D optical lattice
• Calculations of static dipole polarizabilities of alkali dimers. Prospects for alignment of ultracold molecules
• Novel quantum phases of dipolar Bose gases in optical lattices
• Interlayer superfluidity in bilayer systems of fermionic polar molecules
• Preparation of a quantum state with one molecule at each site of an optical lattice
• Production of a dual-species Bose-Einstein condensate of Rb and Cs atoms
• `Stückelberg interferometry' with ultracold molecules
• Superfluidity and dimerization in a multilayered system of fermionic polar molecules
• Efficient creation of molecules from a cesium Bose-Einstein condensate
• Collective modes of monolayer, bilayer, and multilayer fermionic dipolar liquid

Cited by in corpus (40)

• Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state
• Creation of ultracold ${}^{87}$RbCs molecules in the rovibrational ground state
• Manipulation of Molecules with Electromagnetic Fields
• Towards the production of ultracold ground-state RbCs molecules: Feshbach resonances, weakly bound states, and coupled-channel model
• Roton immiscibility in a two-component dipolar Bose gas
• Production of optically trapped ${}^{87}$RbCs Feshbach molecules
• Formation of ultracold molecules by merging optical tweezers
• Universalities in ultracold reactions of alkali polar molecules
• Van der Waals coefficients for systems with ultracold polar alkali-metal molecules
• Simulating quantum magnets with symmetric top molecules
• Continuous Formation of Vibronic Ground State RbCs Molecules via Photoassociation
• Fluctuations and quantum self-bound droplets in a dipolar Bose-Bose mixture
• Long-range interactions between polar alkali-metal diatoms in external electric fields
• Two-photon photoassociation spectroscopy of CsYb: ground-state interaction potential and interspecies scattering lengths
• Clustered Wigner crystal phases of cold polar molecules in arrays of one-dimensional tubes
• A Simple, Versatile Laser System for the Creation of Ultracold Ground State Molecules
• Ground and excited state properties of the polar and paramagnetic RbSr molecule: a comparative study
• The RbSr ${}^2{\Sigma }^{+}$ ground state investigated via spectroscopy of hot & ultracold molecules
• Novel Fermi Liquid of 2D Polar Molecules
• Feshbach spectroscopy of an ultracold mixture of ${}^{85}$Rb and ${}^{133}$Cs
• Dipole-dipole interactions in optical lattices do not follow an inverse cube power law
• Efficient conversion of closed-channel dominated Feshbach molecules of ${}^{23}$Na${}^{40}$K to their absolute ground state
• Collective Dissipative Molecule Formation in a Cavity
• Singlet Pathway to the Ground State of Ultracold Polar Molecules
• Ultracold ${}^{88}{\mathrm{Sr}}_2$ molecules in the absolute ground state
• High Resolution Molecular Spectroscopy for Producing Ultracold Absolute Ground-State ${}^{23}$Na${}^{87}$Rb Molecules
• Formation of ultracold RbCs molecules by photoassociation
• Stability Spectroscopy of Rotons in a Dipolar Bose Gas
• The Molecular Hubbard Hamiltonian: Field Regimes and Molecular Species
• Model for the hyperfine structure of electronically-excited $\mathrm{KCs}$ molecules
• Measurement of the binding energy of ultracold ${}^{87}$Rb${}^{133}$Cs molecules using an offset-free optical frequency comb
• Two-Photon Spectroscopy of the NaLi Triplet Ground State
• A Dielectric Superfluid of Polar Molecules
• Mixing of 0${}^{+}$ and 0${}^{-}$ observed in hyperfine and Zeeman structure of ultracold Rb${}_2$ molecules
• Fine Structure of Open Shell Diatomic Molecules in Combined Electric and Magnetic Fields
• Driving the formation of the RbCs dimer by a laser pulse. A nonlinear dynamics approach
• The Role of Interspecies Interactions in the Preparation of a Low-entropy Gas of Polar Molecules in a Lattice
• Orbital physics of polar Fermi molecules
• Polar molecules in bilayers with high population imbalance
• Highly Efficient Creation and Detection of Deeply-bound Molecules via Invariant-based Inverse Engineering with Feasible Modified Drivings