High resolution photoassociation spectroscopy of the excited c31+ potential of 23Na133CsWe report on photoassociation spectroscopy probing the c31+ potential of the bi-alkali NaCs molecule, identifying eleven vibrational lines between v' = 0 and v' = 25 of the excited…Lewis R. B. Picard, Jessie T. Zhang, William B. Cairncross et al.·Feb 17, 2023SaveLearn
Sub-Natural Linewidth Superradiant Lasing with Cold 88Sr AtomsSuperradiant lasers operate in the bad-cavity regime, where the phase coherence is stored in the spin state of an atomic medium rather than in the intracavity electric field. Such lasers use…Sofus Laguna Kristensen, Eliot Bohr, Julian Robinson-Tait et al.·Feb 17, 2023SaveLearn
Investigation of Efimov Features and Universality in 87Rb-40K Mixtures with finite-range interactionThe study of Efimov features and their relationships in 40K-87Rb Mixtures has generated extensive discussion, yet the discrepancy between Efimov universality predictions based on the…Ning-Ning Gao, Hui-Li Han, Ting-Yun Shi·Feb 17, 2023SaveLearn
Compact atom source using fiber-based pulsed laser ablationWe designed, demonstrated, and characterized an atom source based on fiber-based pulsed laser ablation. By using commercially available miniature lens system for focusing nanosecond pulsed laser of…Alto Osada, Ryuta Tamaki, Wenbo Lin et al.·Feb 15, 2023SaveLearn
1S-3S cw spectroscopy of hydrogen/deuterium atomWe study the 1S-3S two-photon transition of hydrogen in a thermal atomic beam, using a homemade cw laser source at 205 nm. The experimental method is described, leading in 2017 to the measurement of…Pauline Yzombard, Simon Thomas, Lucile Julien et al.·Feb 15, 2023SaveLearn
Formation of ultracold molecules by merging optical tweezersWe demonstrate the formation of a single RbCs molecule during the merging of two optical tweezers, one containing a single Rb atom and the other a single Cs atom. Both atoms are initially…Daniel K. Ruttley, Alexander Guttridge, Stefan Spence et al.·Feb 14, 2023SaveLearn
Streaking single-electron ionization in open-shell molecules driven by X-ray pulsesWe obtain continuum molecular wavefunctions for open-shell molecules in the Hartree-Fock framework. We do so while accounting for the singlet or triplet total spin symmetry of the molecular ion, that…M. E. Mountney, T. C. Driver, A. Marinelli et al.·Feb 14, 2023SaveLearn
Spectroscopic study of the F1g+ outer well state in H2, HD and D2Two-photon UV-photolysis of hydrogen sulfide molecules is applied to produce hydrogen molecules in highly excited vibrational levels in the \ electronic ground state, up to the dissociation energy…K. -F. Lai, M. Beyer, W. Ubachs·Feb 14, 2023SaveLearn
Quantum state resolved molecular dipolar collisions over four decades of energyCollisions between cold polar molecules represent a fascinating research frontier, but have proven hard to probe experimentally. We report measurements of inelastic cross sections for collisions…Guoqiang Tang, Matthieu Besemer, Stach Kuijpers et al.·Feb 14, 2023SaveLearn
Hydrogen and hydrogen-like-ion bound states and hyperfine splittings: finite nuclear size effectsUsing the Dirac equation, we study corrections to electron binding energies and hyperfine splittings of atomic hydrogen and hydrogen-like ions due to finite nuclear size (FNS) effects, relativistic…Igor Kuzmenko, Tetyana Kuzmenko, Y. Avishai et al.·Feb 13, 2023SaveLearn
Probing Vibronic Coherence in Charge Migration of Molecules Using Strong Field Sequential Double IonizationWe propose a novel scheme for probing vibronic coherence in charge migration in molecules utilizing strong field sequential double ionization. To demonstrate the feasibility of this approach, we…C. H. Yuen, C. D. Lin·Feb 12, 2023SaveLearn
Ab initio calculations of the 2p3/2 → 2s transition in He-, Li-, and Be-like uraniumThe bound-state QED approach is applied to calculations of the 2p3/2 → 2s transition energies in He-, Li-, and Be-like uranium. For U90+ and U89+, standard perturbation…A. V. Malyshev, Y. S. Kozhedub, V. M. Shabaev·Feb 11, 2023SaveLearn
Gauge-invariant absorption of light from a coherent superposition of statesAbsorption and emission of light is studied theoretically for excited atoms in coherent superposition of states subjected to isolated attosecond pulses in the extreme ultraviolet range. A gauge…Axel Stenquist, Felipe Zapata, Jan Marcus Dahlström·Feb 10, 2023SaveLearn
Analysis of atomic-clock data to constrain variations of fundamental constantsWe present a new framework to study the time variation of fundamental constants in a model-independent way. Model independence implies more free parameters than assumed in previous studies. Using…Nathaniel Sherrill, Adam O. Parsons, Charles F. A. Baynham et al.·Feb 9, 2023SaveLearn
Isotope study of the nonlinear pressure shifts of 85Rb and 87Rb hyperfine resonances in Ar, Kr, and Xe buffer gasesMeasurements of the 0--0 hyperfine resonant frequencies of ground-state 85Rb atoms show a nonlinear dependence on the pressure of the buffer gases Ar, Kr, and Xe. The nonlinearities are similar…B. H. McGuyer·Feb 8, 2023SaveLearn
Motional ground-state cooling of single atoms in state-dependent optical tweezersLaser cooling of single atoms in optical tweezers is a prerequisite for neutral atom quantum computing and simulation. Resolved sideband cooling comprises a well-established method for efficient…Christian Hölzl, Aaron Götzelmann, Moritz Wirth et al.·Feb 8, 2023SaveLearn
Singularity in electron-core potential as a gateway to accurate multi-electron ionization spectra in strongly driven atomsWe demonstrate a general three-dimensional semiclassical model as a powerful technique for the study of correlated multi-electron escape in atoms driven by infrared laser pulses at intensities where…Agapi Emmanouilidou, Matthew Benjamin Peters, Georgios Petros Katsoulis·Feb 7, 2023SaveLearn
Spectral analysis of spin noise in an optically spin-polarized stochastic Bloch equation driven by noisy magnetic fieldsWe provide a closed-form autocorrelation function and power spectral density (PSD) of the solution, along a prescribed probing direction, to a noisy version of an optically pumped Bloch equation…M. M. Kim, Sangkyung Lee·Feb 7, 2023SaveLearn
Revisited T, P-odd spin-rotational Hamiltonian of HfF+ for precise eEDM measurementsThe current constraint on the electron electric dipole moment (eEDM), |de|<4.1× 10-30 e ·p cm (90\% confidence), was recently established using the trapped…Alexander N. Petrov, Leonid V. Skripnikov, Anatoly V. Titov·Feb 6, 2023SaveLearn
X-ray induced electron and ion fragmentation dynamics in IBrCharacterization of the inner-shell decay processes in molecules containing heavy elements is key to understanding x-ray damage of molecules and materials and for medical applications with…Phay J. Ho, Dipanwita Ray, Stefan Lehmann et al.·Feb 5, 2023SaveLearn
Bichromatic UV detection system for atomically-resolved imaging of ionsWe present a compact and bichromatic imaging system, located outside of the vacuum chamber of a trapped ion apparatus, that collects the fluorescence of 230.6 nm and 369.5 nm photons simultaneously…T. Nordmann, S. Wickenhagen, M. Doležal et al.·Feb 5, 2023SaveLearn
Losses of thulium atoms from optical dipole traps operating at 532 and 1064 nmRecently thulium has been condensed to Bose-Einstein condensate. Machine learning was used to avoid a detailed study of all obstacles making cooling difficult. This paper analyses the atomic loss…V. V. Tsyganok, D. A. Pershin, V. A. Khlebnikov et al.·Feb 4, 2023SaveLearn
Atomic Clock States of Thulium have Near-Zero Electric Quadrupole MomentA method for highly accurate calculations of atomic electric quadrupole moments (EQM) is presented, using relativistic general-excitation-rank configuration interaction wavefunctions based on Dirac…Timo Fleig·Feb 3, 2023SaveLearn
Relativistic analytical R-matrix (ARM) theory for strong-field ionizationThe analytical R-matrix (ARM) theory has been known for an efficient description of the Coulomb effects of the atomic core in strong-field ionization in the nonrelativistic regime. We generalize the…Michael Klaiber, Karen Z. Hatsagortsyan, Christoph H. Keitel·Feb 3, 2023SaveLearn
Angular dependence of the Wigner time delay upon strong field ionization from an aligned p-orbitalWe present experimental data on the strong-field ionization of the argon dimer in a co-rotating two-color (CoRTC) laser field. We observe a sub-cycle interference pattern in the photoelectron…D. Trabert, N. Anders, A. Geyer et al.·Feb 1, 2023SaveLearn