Benford's law in atomic spectra and opacity databasesThe intriguing law of anomalous numbers, also named Benford's law, states that the significant digits of data follow a logarithmic distribution favoring the smallest values. In this work, we test the…Jean-Christophe Pain, Yuri Ralchenko·May 29, 2024SaveLearn
Effects of alloying elements on carbon diffusion in the austenite (f.c.c.) and ferrite (b.c.c.) phasesTThe effects of alloying elements on diffusion pathways and migration energies of interstitial carbon in austenite (f.c.c.) and ferrite (b.c.c.) are studied using density functional theory…Zugang Mao, Amir R. Farkoosh, David N. Seidman·May 29, 2024SaveLearn
Eighth-Order Foldy-Wouthuysen TransformationThe calculation of higher-order binding corrections to bound systems is a fundamental problem of theoretical physics. For any nonrelativistic expansion, one needs the Foldy-Wouthuysen Transformation…Ulrich D. Jentschura·May 29, 2024SaveLearn
In Situ Dynamic Four-Dimensional Strong Field Ionization TomographyWe present an approach for in situ dynamic four-dimensional (4D=3D space + 1D time) laser induced strong field ionization tomography, particularly suited for measuring far-from-equilibrium systems,…Noam Shlomo, Eugene Frumker·May 28, 2024SaveLearn
Differential polarizability at 1064 nm of the strontium intercombination transitionWe measure the scalar, vector and tensor components of the differential dynamic polarizability of the strontium intercombination transition at 1064 nm. We compare the experimental values with the…Romaric Journet, Félix Faisant, Sanghyeop Lee et al.·May 28, 2024SaveLearn
Three-dimensional Magneto-optical Trapping of Barium MonofluorideAs a heavy molecule, barium monofluoride (BaF) presents itself as a promising candidate for measuring permanent electric dipole moment. The precision of such measurements can be significantly…Zixuan Zeng, Shuhua Deng, Shoukang Yang et al.·May 28, 2024SaveLearn
Chip-Scale Point-Source Sagnac Interferometer by Phase-Space SqueezingMatter-wave interferometry plays a significant role in scientific research and technological applications. While position-momentum phase-space squeezing has been demonstrated to increase the…Yiftach Halevy, Yali Cina, Omer Feldman et al.·May 27, 2024SaveLearn
Understanding inner-shell excitations in molecules through spectroscopy of the 4f hole states of YbFMolecules containing a lanthanide atom have sets of electronic states arising from excitation of an inner-shell electron. These states have received little attention, but are thought to play an…S. Popa, S. Schaller, A. Fielicke et al.·May 24, 2024SaveLearn
Generation of vortex electrons by atomic photoionizationWe explore the process of orbital angular momentum (OAM) transfer from a twisted light beam to an electron in atomic ionization within the first Born approximation. The characteristics of the ejected…I. I. Pavlov, A. D. Chaikovskaia, D. V. Karlovets·May 23, 2024SaveLearn
Ultra-cold atoms quantum tunneling through single and double optical barriersWe realize textbook experiments on Bose-Einstein condensate tunnelling through thin repulsive potential barriers. In particular, we demonstrate atom tunnelling though a single optical barrier in the…Roy Eid, Alfred Hammond, Lucas Lavoine et al.·May 23, 2024SaveLearn
A frequency shift compensation method for light shift and vapor-cell temperature shift in atomic clocksLight shift and vapor-cell temperature shift are the two most significant factors dominating the long-term instability of compact atomic clocks. Due to the different physical mechanisms, there is not…Dou Li, Kangqi Liu, Linzhen Zhao et al.·May 23, 2024SaveLearn
Optimizing Four-Wave Mixing in Rydberg Atoms for Microwave-Optical ConversionWe perform a numerical and analytical investigation of microwave-to-optical conversion based on four-wave mixing in Rydberg atoms. Our work demonstrates that both all-resonant and off-resonant…Ning Ji, Yanzhao Liang, Wanrang Yu et al.·May 23, 2024SaveLearn
Fano line shape metamorphosis in resonant two-photon ionizationTwo-photon atomic ionization driven by time-locked XUV and IR pulses allows to study dynamics of Fano resonances in time and energy domains. Different time evolution of the two interfering pathways…Vladislav V. Serov, Anatoli S. Kheifets·May 23, 2024SaveLearn
Tracking chirality in photoelectron circular dichroismIn photoelectron circular dichroism (PECD) it is generally difficult to trace how and when the chirality of the molecule is imprinted onto the photoelectron. We present simulations of PECD in a…Marec W. Heger, Daniel M. Reich·May 22, 2024SaveLearn
High-precision, reference-free measurements of 2p → 1s transitions in boron-like sulfur and argonWe have measured several 2p → 1s transition energies in core-excited boron-like ions of sulfur and argon. The measurements are reference-free, with an accuracy of a few parts per million.…Louis Duval, Emily Lamour, Stéphane Macé et al.·May 22, 2024SaveLearn
All-fiber, near-infrared, laser system at 780nm for atom coolingOne of the prominent platforms for quantum technologies, cold atoms require reliable laser systems. We present the design, implementation, and characterization of a simple, compact, and economical…Matteo Marchesini, Michelangelo Dondi, Leonardo Rossi et al.·May 21, 2024SaveLearn
Probing Wigner time delays with photoelectron interferometry: Anisotropic long-range imprint of the short-range centrifugal potentialWe consider the two-photon ionization of Hydrogen-like atoms. We find an approximate expression of the long-range phase based on an asymptotic expansion of the continuum eigenfunctions within the…Morgan Berkane, Camille Lévêque, Richard Taïeb et al.·May 21, 2024SaveLearn
Interatomic Interaction Models for Magnetic Materials: Recent AdvancesAtomistic modeling is a widely employed theoretical method of computational materials science. It has found particular utility in the study of magnetic materials. Initially, magnetic empirical…Tatiana S. Kostiuchenko, Alexander V. Shapeev, Ivan S. Novikov·May 21, 2024SaveLearn
Time-dependent convergent close coupling method for molecular ionization in laser fieldsWe develop a time-dependent multi-configurational numerical technique for calculating ionization by short laser pulses of many-electron molecules. The method is based on the expansion of the wave…Vladislav V. Serov·May 21, 2024SaveLearn
Highly charged ions of heavy actinides as sensitive probes for time variation of the fine structure constantHighly charged ions of heavy actinides from uranium to einsteinium are studied theoretically to find optical transitions sensitive to the variation of the fine structure constant. A number of…V. A. Dzuba, V. V. Flambaum·May 20, 2024SaveLearn
Vacuum polarization in molecules I: Uehling interactionRadiative corrections to electronic structure are characterized by perturbative expansions in α and Zα, where α is the fine-structure constant and Z is the nuclear charge. A…D. J. Flynn, I. P. Grant, H. M. Quiney·May 18, 2024SaveLearn
Vacuum polarization in molecules II: higher order correctionsWe outline a general formalism for treating vacuum polarization phenomena within an effective field expansion. The coupling between source charges and virtual fields is examined from the perspectives…D. J. Flynn, I. P. Grant, H. M. Quiney·May 18, 2024SaveLearn
Absolute quantum gravimeters and gradiometers for field measurementsGravity measurements provide valuable information on the mass distribution below the earth surface relevant to various areas of geosciences such as hydrology, geodesy, geophysics, volcanology, and…Laura Antoni-Micollier, Maxime Arnal, Romain Gautier et al.·May 17, 2024SaveLearn
Functionalized mm-scale vapor cells for alkali-metal spectroscopy and magnetometryWe describe micro-fabricated rubidium vapor cells with integrated temperature-control functionality and demonstrate their suitability for use in miniaturized ultra-sensitive magnetometers. These…Harini Raghavan, Michael C. D. Tayler, Kostas Mouloudakis et al.·May 17, 2024SaveLearn
Coherent control of multiphoton ionization of lithium atoms by a bichromatic laser fieldWe demonstrate a left-right asymmetry control of the photo\-electron angular distribution in multi\-photon ionization of Li atoms by a bichromatic laser field. By delaying the fundamental (780 nm)…Silva Mezinska, Alexander Dorn, Thomas Pfeifer et al.·May 16, 2024SaveLearn