Fine and hyperfine splitting of the low-lying states of 9BeWe perform accurate calculations of energy levels as well as fine and hyperfine splittings of the lowest 1,3\!PJ, 3\!S1, 3\!PeJ, and 1,3\!DJ excited states of the 9Be atom…Mariusz Puchalski, Jacek Komasa, Krzysztof Pachucki·Jun 30, 2021SaveLearn
The sub-millimetre non-uniformity measurement of residual and coil-generated field in the magnetic shield using atomic vapor cellMagnetic field source localization and imaging happen at different scales. The sensing baseline ranges from meter scale such as magnetic anomaly detection, centimeter scale such as brain field…Chen Liu, Haifeng Dong, Junjun Sang·Jun 29, 2021SaveLearn
Proposal for suppressing ac Stark shift in the He(2\,3S1→ 3\,3S1) two-photon transition using magic wavelengthsMotivated by recent direct measurement of the forbidden 2\,3S1→3\,3S1 transition in helium [K. F. Thomas et al., Phys. Rev. Lett. 125, 013002(2020)], where the ac Stark shift is one…Yong-Hui Zhang, Li-Yan Tang, Ting-Yun Shi·Jun 29, 2021SaveLearn
Implementation of a time-dependent multiconfiguration self-consistent-field method for coupled electron-nuclear dynamics in diatomic molecules driven by intense laser pulsesWe present an implementation of a time-dependent multiconfiguration self-consistent-field (TD-MCSCF) method [R. Anzaki et al., Phys. Chem. Chem. Phys. 19, 22008 (2017)] with the full configuration…Yang Li, Takeshi Sato, Kenichi L. Ishikawa·Jun 28, 2021SaveLearn
Effect of the finite speed of light in ionization of extended systemsWe study propagation effects due to the finite speed of light in ionization of extended systems. We present a general quantitative theory of these effects and show under which conditions such effects…I. A. Ivanov, Anatoli S. Kheifets, Kyung Taec Kim·Jun 28, 2021SaveLearn
Bimolecular chemistry in the ultracold regimeAdvances in atomic, molecular, and optical (AMO) physics techniques allowed the cooling of simple molecules down to the ultracold regime ( 1 mK), and opened the opportunities to study…Yu Liu, Kang-Kuen Ni·Jun 27, 2021SaveLearn
Non-adiabatic dynamics in Rydberg gases with random atom positionsAssemblies of highly excited Rydberg atoms in an ultracold gas can be set into motion by a combination of van-der-Waals and resonant dipole-dipole interactions. Thereby, the collective electronic…Ritesh Pant, Rajat Agrawal, Sebastian Wüster et al.·Jun 25, 2021SaveLearn
139 GHz UV phase-locked Raman laser system for thermometry and sideband cooling of 9Be+ ions in a Penning trapWe demonstrate phase locking of two ultraviolet laser sources by modulating a fundamental infrared laser with 4th-order sidebands using an electro-optic modulator and phase locking of one sideband to…Johannes Mielke, Julian Pick, Julia A. Coenders et al.·Jun 25, 2021SaveLearn
Single-Source, Collinear Merged-Beam Experiment for the Study of Reactive Neutral-Neutral CollisionsWe present two methods for studying reactive collisions between two atomic or molecular species: a collinear merged-beam method, in which two gas pulses from a single supersonic beam source are…Katrin Dulitz, Marco van den Beld-Serrano, Frank Stienkemeier·Jun 25, 2021SaveLearn
Sensitive detection of metastable NO and N2 by reactive collisions with laser-excited LiIn a proof-of-principle experiment, we demonstrate that metastable nitric oxide molecules, NO(a4i), generated inside a pulsed, supersonic beam, can be detected by reactive gas-phase collisions…Jiwen Guan, Tobias Sixt, Katrin Dulitz et al.·Jun 25, 2021SaveLearn
An atomic compass -- detecting 3D magnetic field alignment with vector vortex lightWe describe and demonstrate how 3D magnetic field alignment can be inferred from single absorption images of an atomic cloud. While optically pumped magnetometers conventionally rely on temporal…Francesco Castellucci, Thomas W. Clark, Adam Selyem et al.·Jun 25, 2021SaveLearn
A laser cooling scheme for precision measurements using barium monofluoride (137Ba19F) moleculesWe theoretically investigate the laser cooling of fermionic barium monofluoride (137BaF) molecules, which are promising candidates for precision studies of weak parity violation and nuclear anapole…Felix Kogel, Marian Rockenhäuser, Ralf Albrecht et al.·Jun 24, 2021SaveLearn
Preparation of individual magnetic sub-levels of 4He(23S1) in a supersonic beam using laser optical pumping and magnetic hexapole focusingWe compare two different experimental techniques for the magnetic-sub-level preparation of metastable 4He in the 23S1 level in a supersonic beam, namely magnetic hexapole focusing and…Tobias Sixt, Jiwen Guan, Alexandra Tsoukala et al.·Jun 24, 2021SaveLearn
Generating high density molecular jets of complex neutral organic molecules using micro-sized Tesla valvesWe report the design and implementation of multiple Tesla type micro valves in the target delivery system of a reaction microscope (ReMi) to study gas phase structural dynamics of complex polyatomic…Moniruzzaman Shaikh, Xinyao Liu, Kasra Amini et al.·Jun 23, 2021SaveLearn
Temporal characterization of long quantum-path high harmonicsWe measure for the first time the duration of long-quantum path EUV high harmonics produced in xenon gas. The long-quantum path contribution to the high-harmonic signal was carefully controlled by…A. Carpeggiani, B. Bodi, E. S. Skantzakis et al.·Jun 21, 2021SaveLearn
Electrons on sphere in the helium-like atomic systemsThe properties of a special configuration of a helium-like atomic system, when both electrons are on the surface of a sphere of radius r, and angle θ characterizes their positions on sphere,…Evgeny Z. Liverts·Jun 21, 2021SaveLearn
Dual-frequency Doppler-free spectroscopy for simultaneous laser stabilisation in compact atomic physics experimentsVapour cell spectroscopy is an essential technique in many fields; in particular, nearly all atom and ion trapping experiments rely on simultaneous spectroscopy of two atomic transitions,…Nathan Cooper, Somaya Madkhaly, David Johnson et al.·Jun 21, 2021SaveLearn
Spatial Kramers-Kronig relation and unidirectional light reflection induced by Rydberg dipole-dipole interactionsKramers-Kronig (KK) relation between the dispersion and absorption responses of a signal field can be mapped from the frequency domain into the space domain via the dipole-dipole interactions between…Di-Di Zheng, Yan Zhang, Yi-Mou Liu et al.·Jun 21, 2021SaveLearn
Calculation of Energy Loss in Antiproton Collisions with Many-Electron Systems using Ehrenfest's TheoremEnergy loss in collisions of charged projectiles with many-electron systems can be dealt with in time-dependent density functional theory by invoking Ehrenfest's theorem for the time evolution of…Hans Jürgen Lüdde, Marko Horbatsch, Tom Kirchner·Jun 21, 2021SaveLearn
Two-photon polarizability of Ba+ ion: Control of spin-mixing process in an ultracold 137Ba+--87Rb mixtureIonic clocks exhibit as the most promising candidates for the frequency standards. Recent investigations show the profound advantages of interrogating two laser beams with different frequencies in…Arghya Das, Anal Bhowmik, Narendra Nath Dutta et al.·Jun 17, 2021SaveLearn
Sapphire optical viewport for high pressure and temperature applicationsWe describe the design of a soldered sapphire optical viewport, useful for spectroscopic applications of samples at high temperatures and high pressures. The sapphire window is bonded via active…Till Ockenfels, Frank Vewinger, Martin Weitz·Jun 17, 2021SaveLearn
Linear optical properties of a linear chain of interacting gold nanoparticlesIn a Drude-like model for the conduction electrons of Metal Nanoparticles (MNPs) in a periodic linear chain, considering dipole-dipole interactions of adjacent particles, an analytical expression is…Asef Kheirandish, Nasser Sepehri Javan, Hosein Mohammadzadeh·Jun 17, 2021SaveLearn
Quantum Monte Carlo studies of a trimer scaling function with microscopic two- and three-body interactionsWe present an energy scaling function to predict, in a specific range, the energy of bosonic trimers with large scattering lengths and finite range interactions, which is validated by quantum Monte…Lucas Madeira, Tobias Frederico, Stefano Gandolfi et al.·Jun 16, 2021SaveLearn
Non-Equilibrium Dynamics in Two-Color, Few-Photon Dissociative Excitation and Ionization of D2D2 molecules, excited by linearly cross-polarized femtosecond extreme ultraviolet (XUV) and near-infrared (NIR) light pulses, reveal highly structured D+ ion fragment momenta and angular…D. S. Slaughter, F. P. Sturm, R. Y. Bello et al.·Jun 16, 2021SaveLearn
Generation of energetic highly elliptical extreme ultraviolet radiationIn this study the generation of energetic coherent extreme ultraviolet (XUV) radiation with controlled polarization, is reported. The XUV radiation results from the process of high harmonic…E. Vassakis, I. Orfanos, I. Liontos et al.·Jun 16, 2021SaveLearn