Increase of barium ion-trap lifetime via photodissociationThe lifetime of Ba+ ions confined in a Paul trap is found, under typical conditions, to be limited by chemical reactions with residual background gas. An integrated ion trap and time-of-flight…Hao Wu, Michael Mills, Elizabeth West et al.·Sep 11, 2021SaveLearn
Interference in ω -2ω atomic ionization within the strong-field approximation: Beyond the perturbative regimeWe analyze interference processes in atomic ionization induced by a two-color laser with fundamental frequency ω and its second harmonic 2ω . The interplay between inter- and…Diego G. Arbó, Sebastián D. López·Sep 10, 2021SaveLearn
Molecular Laser-Cooling in a Dynamically Tunable Repulsive Optical TrapRecent work with laser-cooled molecules in attractive optical traps has shown that the differential AC Stark shifts arising from the trap light itself can become problematic, limiting collisional…Yukai Lu, Connor M. Holland, Lawrence W. Cheuk·Sep 9, 2021SaveLearn
Long-range model of vibrational autoionization in core-nonpenetrating Rydberg states of NOIn high orbital angular momentum ( ≥ 3) Rydberg states, the centrifugal barrier hinders close approach of the Rydberg electron to the ion-core. As a result, these core-nonpenetrating Rydberg…Timothy J. Barnum, Gloria Clausen, Jun Jiang et al.·Sep 9, 2021SaveLearn
Frequency shifts in the EPR spectrum of 39K due to spin-exchange collisions with polarized 3He and precise 3He polarimetryThe Zeeman splittings and EPR frequencies of alkali-metal atoms are shifted in the presence of a polarized noble gas. For a spherical geometry, the shift is enhanced over what is expected classically…Sumudu Katugampola, Christopher Jantzi, David A. Keder et al.·Sep 9, 2021SaveLearn
Cold CH radicals for laser cooling and trappingUltracold CH radicals promise a fruitful testbed for probing quantum-state controllable organic chemistry. In this work, we calculate CH vibrational branching ratios (VBRs) and rotational branching…J. C. Schnaubelt, J. C. Shaw, D. J. McCarron·Sep 8, 2021SaveLearn
Control of reactive collisions by quantum interferenceIn this study, we achieved magnetic control of reactive scattering in an ultracold mixture of 23Na atoms and 23Na6Li molecules. In most molecular collisions, particles react or are…Hyungmok Son, Juliana J. Park, Yu-Kun Lu et al.·Sep 8, 2021SaveLearn
Multi-frequency telecom fibered laser system for potassium laser coolingWe describe a compact and versatile multi-frequency laser system for laser-cooling potassium atoms, by frequency doubling a fiber-optic telecom beam ( 1534 or 1540~nm). Low-power…Charbel Cherfan, Maxime Denis, Denis Bacquet et al.·Sep 8, 2021SaveLearn
Hyperfine dependent atom-molecule loss analyzed by the analytic solution of few-body loss equationsWe prepare mixtures of ultracold 39K atoms in various hyperfine spin states and 23Na39K molecules in an optical dipole trap at a fixed magnetic field and study inelastic two-body…Kai K. Voges, Philipp Gersema, Torsten Hartmann et al.·Sep 8, 2021SaveLearn
Zeeman-Sisyphus Deceleration of Molecular BeamsWe present a robust, continuous molecular decelerator that employs high magnetic fields and few optical pumping steps. CaOH molecules are slowed, accumulating at low velocities in a range sufficient…Benjamin L. Augenbraun, Alexander Frenett, Hiromitsu Sawaoka et al.·Sep 7, 2021SaveLearn
Electric field dependence of complex-dominated ultracold molecular collisionsRecent experiments on ultracold non-reactive dipolar molecules have observed high two-body losses, even though these molecules can undergo neither inelastic, nor reactive (as they are in their…Goulven Quéméner, James F. E. Croft, John L. Bohn·Sep 6, 2021SaveLearn
Ground-state g factor of highly charged 229Th ions: an access to the M1 transition probability between the isomeric and ground nuclear statesA method is proposed to determine the M1 nuclear transition amplitude and hence the lifetime of the "nuclear clock transition" between the low-lying ( 8 eV) first isomeric state and the…V. M. Shabaev, D. A. Glazov, A. M. Ryzhkov et al.·Sep 3, 2021SaveLearn
Complete characterization of multi-channel single photon ionizationIonization of atoms and molecules by absorption of a light pulse results in electron wavepackets carrying information on the atomic or molecular structure as well as on the dynamics of the ionization…Jasper Peschel, David Busto, Marius Plach et al.·Sep 3, 2021SaveLearn
Robust Polarization Gradient Cooling of Trapped IonsWe implement three-dimensional polarization gradient cooling of trapped ions. Counter-propagating laser beams near 393\,nm impinge in lin\,\,lin configuration, at a frequency below the…Wenbing Li, Sebastian Wolf, Lukas Klein et al.·Sep 1, 2021SaveLearn
Vibration damping platform for cavity quantum-electrodynamics experimentsWe present a mechanical platform with enhanced vibration damping properties for cavity quantum-electrodynamics experiments. It is based on a composite design that combines a soft, vibration-damping…N. Sauerwein, T. Cantat-Moltrecht, I. T. Grigoras et al.·Sep 1, 2021SaveLearn
Progress towards a matter wave interferometer for inertial sensing with non-destructive monitoring of Bloch oscillationsWe report on our progress in the construction of a continuous matter-wave interferometer for inertial sensing via the non-destructive observation of Bloch oscillations. At the present stage of the…D. Rivero, C. Beli Silva, M. A. Moreno Armijo et al.·Aug 30, 2021SaveLearn
Attosecond multi-photon multi-electron dynamicsMulti-electron dynamics in atoms and molecules very often occur on sub- to few-femtosecond timescales. The available intensities of extreme-ultraviolet (XUV) attosecond pulses have previously only…M. Kretschmar, A. Hadjipittas, B. Major et al.·Aug 30, 2021SaveLearn
Enhancement of electromagnetically induced transparency based Rydberg-atom electrometry through population repumpingWe demonstrate improved sensitivity of Rydberg electrometry based on electromagnetically induced transparency (EIT) with a ground state repumping laser. Though there are many factors that limit the…Nikunjkumar Prajapati, Amy K. Robinson, Samuel Berweger et al.·Aug 30, 2021SaveLearn
Enhancing spin polarization using ultrafast angular streakingThrough solution of the multielectron, semi-relativistic, time-dependent Schr\"odinger equation, we show that angular streaking produces strongly spin-polarized electrons in a noble gas. The degree…Gregory S. J. Armstrong, Daniel D. A. Clarke, Jakub Benda et al.·Aug 30, 2021SaveLearn
Lowest order thermal correction to the hydrogen recombination cross section in presence of blackbody radiationIn the present paper, the correction due to the thermal interaction of two charges to the recombination and ionization processes for the hydrogen atom is considered. The evaluation is based on a…J. Triaskin, T. Zalialiutdinov, A. Anikin et al.·Aug 30, 2021SaveLearn
Precision measurement of the Lamb shift in MuoniumWe report a new measurement of the n=2 Lamb shift in Muonium using microwave spectroscopy. Our result of 1047.2(2.3)stat(1.1)syst MHz comprises an order of magnitude…B. Ohayon, G. Janka, I. Cortinovis et al.·Aug 29, 2021SaveLearn
Sympathetic cooling of a trapped proton mediated by an LC circuitEfficient cooling of trapped charged particles is essential to many fundamental physics experiments, to high-precision metrology, and to quantum technology. Until now, sympathetic cooling has…M. Bohman, V. Grunhofer, C. Smorra et al.·Aug 29, 2021SaveLearn
Single photon double and triple ionisation of alleneDouble and triple ionization of allene are investigated using electron-electron, ion-ion, electron-electron-ion and electron-electron-ion-ion (ee, ii, eei, eeii) coincidence spectroscopies at…V. Ideböhn, A. J. Sterling, M. Wallner et al.·Aug 28, 2021SaveLearn
Nuclear magnetic shielding in highly charged ionsThe nuclear magnetic shielding is considered within the fully relativistic approach for the ground state of H-, Li-, and B-like ions in the range Z=32-92. The interelectronic interaction is evaluated…A. M. Volchkova, D. A. Glazov, V. M. Shabaev·Aug 27, 2021SaveLearn
Analysing spatiotemporal instabilities in magneto-optical traps with the tools of turbulence theoryA large cloud of 87Rb atoms confined in a magneto-optical trap exhibits, in a certain regime of parameters, spatio-temporal instabilities with a dynamics resembling that of a turbulent fluid. We…Adam Griffin, Marius Gaudesius, Robin Kaiser et al.·Aug 27, 2021SaveLearn