Tractor Atom InterferometryWe propose a tractor atom interferometer (TAI) based on three-dimensional (3D) confinement and transport of split atomic wavefunction components in potential wells that follow programmed paths. The…A. Duspayev, G. Raithel·Mar 8, 2021SaveLearn
Characterising a tunable, pulsed atomic beam using matter-wave interferometryWe describe the creation and characterisation of a velocity tunable, spin-polarized beam of slow metastable argon atoms. We show that beam velocity can be determined with a precision below 1 \% using…J Morley, R. Flack, B. J. Hiley et al.·Mar 8, 2021SaveLearn
Rydberg blockade in an ultracold strontium gas revealed by two-photon excitation dynamicsWe demonstrate the interaction-induced blockade effect in an ultracold 88Sr gas via studying the time dynamics of a two-photon excitation to the triplet Rydberg series $5sns\,…Chang Qiao, Can-Zhu Tan, Julia Siegl et al.·Mar 8, 2021SaveLearn
Scalable codes for precision calculations of properties of complex atomic systemsHigh precision atomic data is indispensable for experiments involving studies of fundamental interactions, astrophysics, atomic clocks, plasma science, and others. We develop new parallel atomic…C. Cheung, M. S. Safronova, S. G. Porsev·Mar 7, 2021SaveLearn
Thermalization of a Trapped Single Atom with an Atomic Thermal BathWe studied a single atom trapped in an optical tweezer interacting with a thermal bath of ultracold atoms of a different species. Because of the collisions between the trapped atom and the bath…Rahul Sawant, Anna Maffei, Giovanni Barontini·Mar 6, 2021SaveLearn
Role of triple excitations in calculating different properties of Ba+We carried out calculations of the energies, hyperfine structure constants and electric-dipole transiton amplitudes for the low-lying states of Ba+ in the framework of the relativistic linearized…S. G. Porsev, M. S. Safronova·Mar 4, 2021SaveLearn
Electron Impact Excitation of O III: An AssessmentTayal and Zatsarinny [Astrophys. J. 850 (2017) 147] have reported results for energy levels, radiative rates (A-values), lifetimes, and effective collision strengths () for transitions…K M Aggarwal·Mar 3, 2021SaveLearn
Minimization of ion micromotion with artificial neural networkMinimizing the micromotion of the single trapped ion in a linear Paul trap is a tedious and time-consuming work,but is of great importance in cooling the ion into the motional ground state as well as…Yang Liu, Qi-feng Lao, Peng-fei Lu et al.·Mar 3, 2021SaveLearn
Homogeneous Linear Ion Crystal in a Hybrid PotentialWe investigate the properties of a linear ion crystal in a combination of quadratic and quartic potentials. Both the discrete and the continuous model are employed to explore the homogeneity of a…Ming-shen Li, Yang Liu, Xin-Xin Rao et al.·Mar 3, 2021SaveLearn
On the connection between angular and partial waves time delays in electron scatteringWithin the framework of a Dirac bubble potential model for the C60 fullerene shell we investigated the angular time delay in slow-electron elastic scattering by C60 as well as average time delay of…M. Ya. Amusia, A. S. Baltenkov, I. Woiciechowski·Mar 2, 2021SaveLearn
Nonadiabatic effects in attosecond transient absorption spectroscopyWe study effects of nonadiabatic couplings in a model of a diatomic molecule in the context of attosecond transient absorption spectroscopy. By using a model system consisting of four diabatic…Nikolaj S. W. Ravn, Lars Bojer Madsen·Mar 2, 2021SaveLearn
Heading errors in all-optical alkali-vapor magnetometers in geomagnetic fieldsAlkali-metal atomic magnetometers suffer from heading errors in geomagnetic fields as the measured magnetic field depends on the orientation of the sensor with respect to the field. In addition to…W. Lee, V. G. Lucivero, M. V. Romalis et al.·Mar 1, 2021SaveLearn
Main magnetic focus ion source: Device with high electron current densityWe discuss recent experiments performed with an upgraded version of the main magnetic focus ion source (MaMFIS) at the Joint Institute for Nuclear Research (JINR) in Dubna. The device operates in the…V. P. Ovsyannikov, A. V. Nefiodov, A. Yu. Boytsov et al.·Mar 1, 2021SaveLearn
Complete α7\,m Lamb shift of helium triplet statesWe have derived the complete formula for the α7\,m contribution to energy levels of an arbitrary triplet state of the helium atom, performed numerical calculations for the 23S and 23P…Vojtěch Patkóš, Vladimir A. Yerokhin, Krzysztof Pachucki·Mar 1, 2021SaveLearn
Laser cooled moleculesThe last few years have seen rapid progress in the application of laser cooling to molecules. In this review, we examine what kinds of molecules can be laser cooled, how to design a suitable cooling…N. J. Fitch, M. R. Tarbutt·Mar 1, 2021SaveLearn
High-performance coherent population trapping atomic clock with direct-modulation distributed Bragg reflector laserThe coherent population trapping (CPT) atomic clock is very promising for use in next-generation spaceborne applications owing to its compactness and high performance. In this paper, we propose and…Peter Yun, Qinglin Li, Qiang Hao et al.·Mar 1, 2021SaveLearn
Probing photoinduced two-body loss of ultracold non-reactive bosonic 23Na87Rb and 23Na39K moleculesWe probe photo-induced loss for chemically stable bosonic 23Na87Rb and 23Na39K molecules in chopped optical dipole traps where the molecules spend a significant time in the dark.…P. Gersema, K. K. Voges, M. Meyer zum Alten Borgloh et al.·Feb 28, 2021SaveLearn
Spatial enantioseparation of gaseous chiral moleculesWe explore the spatial enantioseparation of gaseous chiral molecules for the cyclic three-level systems coupled with three electromagnetic fields. Due to molecular rotations, the specific…Bo Liu, Chong Ye, C. P. Sun et al.·Feb 28, 2021SaveLearn
Development of ion recoil energy distributions in the Coulomb explosion of argon clusters resolved by charge-state selective ion energy spectroscopyThe laser intensity dependence of the recoil energies from the Coulomb explosion of small argon clusters has been investigated by resolving the contributions of the individual charge states to the…D. Komar, L. Kazak, K. -H. Meiwes-Broerand et al.·Feb 26, 2021SaveLearn
Single Ion Thermal Wave Packet Analyzed Via Time-Of-Flight DetectionA single 40Ca ion is confine in the harmonic potential of a Paul trap and cooled to a temperature of a few mK, with a wave packet of sub-m spatial and sub-m/s velocity uncertainty.…Felix Stopp, Luis Ortiz-Gutiérrez, Henri Lehec et al.·Feb 25, 2021SaveLearn
Electric-field-dependent g factor for the ground state of lead monofluoride, PbFThe electric-field-dependent g factor and the electron electric dipole moment (eEDM)-induced Stark splittings for the lowest rotational levels of 207,208PbF are calculated. Observed and…V. V. Baturo, P. M. Rupasinghe, T. J. Sears et al.·Feb 25, 2021SaveLearn
Universal stereodynamics of cold atom-molecule collisions in electric fieldsWe use numerically exact quantum dynamics calculations to demonstrate universal stereoselectivity of cold collisions of 2 molecules with 1S-state atoms in an external electric field. We show…Timur V. Tscherbul, Jacek Kłos·Feb 25, 2021SaveLearn
Ab initio MCDHF calculations of the In and Tl electron affinities and their isotope shiftsWe report multiconfiguration Dirac-Hartree-Fock and relativistic configuration interaction calculations on the Thallium (Tl) electron affinity, as well as on the excited energy levels arising from…Ran Si, Sacha Schiffmann, Kai Wang et al.·Feb 25, 2021SaveLearn
Algorithmic Ground-state Cooling of Weakly-Coupled Oscillators using Quantum LogicMost ions lack the fast, cycling transitions that are necessary for direct laser cooling. In most cases, they can still be cooled sympathetically through their Coulomb interaction with a second,…Steven A. King, Lukas J. Spieß, Peter Micke et al.·Feb 24, 2021SaveLearn
Dissecting Sub-Cycle Interference in Photoelectron HolographyMultipath holographic interference in strong-field quantum tunnel ionization is key to revealing sub-Angstrom attosecond dynamics for molecular movies. This critical sub-cycle motion is often…Nicholas Werby, Andrew S. Maxwell, Ruaridh Forbes et al.·Feb 24, 2021SaveLearn