On the measurability of Wigner time delays at shape resonances in photodetachment of polyatomic anionsThe energy dependence of the complex phases of electron continuum wave functions carries information about electron dynamics. Streaking and attosecond interference experiments (called RABBIT) seek to…Jan Dvořák, Jakub Benda, Thomas N. Rescigno et al.·Jul 11, 2026SaveLearn
Collisions and Stopping of Fast Charged Particles in MatterThis text is intended to offer a consistent presentation of the theory of collisions and stopping of charged particles in matter, limited to the range of intermediate kinetic energies where atomic…Francesc Salvat·Jul 11, 2026SaveLearn
Exact Semiclassical Phase Shifts for Relativistic Atom Interferometers in Flat SpacetimeAtom interferometry is a sensitive tool for measuring relativistic effects, but there are no known non-trivial exact solutions for relativistic atom interferometer phase shifts. Here we derive…Hunter Swan, Jason M. Hogan·Jul 10, 2026SaveLearn
Characterisation of a strontium cold atom source using fluorescence spectroscopy and time-of-flightWe demonstrate a characterisation methodology for a strontium atomic beam, produced by a two-dimensional magneto-optical trap and delivered via a resonant push beam, using fluorescence spectroscopy…Kamran Hussain, Hamza Labiad, Anna L. Marchant et al.·Jul 10, 2026SaveLearn
Optimal Control Design of Robust Raman Pulses for High-Fidelity Cold-Atom InterferometryThe performance of high-precision cold-atom interferometers is often limited by imperfections in the Raman laser fields. We present a reproducible framework for robust Raman mirror-pulse design and…Ziwen Song·Jul 10, 2026SaveLearn
Observation of node-dependent Rydberg molecular bound statesUltralong-range Rydberg molecules, formed by the interaction between a highly excited Rydberg atom and a ground-state atom, provide a unique platform for exploring quantum phenomena spanning…Qing Li, Shi-Yao Shao, Jun Zhang et al.·Jul 9, 2026SaveLearn
Efficient photo-ionizing elimination of detrimental electric fields for Rydberg atomsRydberg atoms are highly sensitive to external electric fields due to their exaggerated electronic properties. This unique feature lays the foundation for many of their applications in quantum…Zhou-Chen Deng, Hao-Nan Lin, Yu-Cheng Duan et al.·Jul 9, 2026SaveLearn
Extracting inter-nuclear distances in the oxygen molecule interacting with an XFEL-pulse: a fundamental system for understanding Coulomb explosion imagingWe investigate the interaction of O2 with an X-ray Free Electron laser (XFEL) pulse of short duration. We consider a photon energy of 570 eV, which allows for the formation of molecular states…Zixu Wang, Georgios Petros Katsoulis, Giorgio Visentin et al.·Jul 9, 2026SaveLearn
Broadband Rydberg Atomic Microwave Sensing with 44.6\,MHz Instantaneous BandwidthRydberg atoms have become a promising novel type of microwave sensor due to their excellent physical properties -- broad frequency coverage and large electric dipole moments. High sensitivity and…Yuhan Yan, Xuejie Li, Jinyin Wan et al.·Jul 9, 2026SaveLearn
Laser Cooling and Hyperfine Measurements of Radium-225 Ions225Ra+ ions (nuclear spin I=1/2) have transitions that are first-order insensitive to magnetic field noise, which is advantageous for optical clocks and quantum information science. We…Roy Ready, Haoran Li, Spencer Kofford et al.·Jul 9, 2026SaveLearn
Theoretical ab initio Evolution of Satellite Intensity near Threshold for Cu K-shell transitionsIn this work, we have investigated the evolution of satellite intensity near the ionization threshold for Cu K-shell transitions through theoretical methods. Employing standard state-of-the-art ab…Daniel Pinheiro, Gonçalo Baptista, César Godinho et al.·Jul 8, 2026SaveLearn
Dual-Platform Precision Measurement of the 32D5/2 to 42S1/2 g-Factor Ratio in 40Ca+We report precision measurements of the ratio of Landé g factors between the 32D5/2 and 42S1/2 states of a single trapped 40Ca+ ion. The measurements are performed in two…Brian J. McMahon, Vikram S. Sandhu, John M. Gray et al.·Jul 8, 2026SaveLearn
Hadronic vacuum polarization in hydrogen-like atoms and ions amid the interplay of recoil and finite-size effectsHadronic vacuum polarization (hVP) enters simple atomic systems at a level that is small yet decisive for the precision spectroscopy now underway. We evaluate the hVP contributions to the Lamb shift…Franziska Hagelstein, Vadim Lensky, Bogdan Malaescu et al.·Jul 8, 2026SaveLearn
Precision spectroscopy of the fine and hyperfine structures of high molecular Rydberg-Stark states: Metrology of molecular hydrogen ionsThe Stark effect in autoionizing high-n Rydberg states decouples the Rydberg electron from the ion core through mixing with core-nonpenetrating high- states. The Rydberg states become…Ioana Doran, Leon Jeckel, Maximilian Beyer et al.·Jul 8, 2026SaveLearn
Collision and static widths of self-broadened line shapes in optically saturated high-density atomic vaporWe study the frequency derivatives of selective reflection from high-density rubidium vapor using a hole-burning technique. Saturation dips are observed inside the self-broadened line shapes. The…Vladimir Sautenkov, Sergey Saakyan, Andrei Bobrov et al.·Jul 8, 2026SaveLearn
Density effects in precision laser spectroscopy of exotic helium atomsExotic helium atoms act as unique atomic traps for heavy, negatively charged particles, protecting them from nuclear annihilation and nuclear capture on timescales long enough to enable…Hubert J. Jóźwiak, Dimitar Bakalov, Michał Przybytek et al.·Jul 8, 2026SaveLearn
Absolute frequency measurement of the 176Lu+\,(3D1) standard against the NRC-FCs2 fountain with 2.6×10-16 uncertaintyWe report an improved absolute frequency measurement of the 176Lu+\,(3D1) optical frequency standard, evaluated via a remote link to the NRC-FCs2 caesium fountain primary…K. J. Arnold, Bin Jian, Zhao Zhang et al.·Jul 8, 2026SaveLearn
Breakdown of sequential tunnel ionization in ultrashort electromagnetic pulsesWe consider double ionization of negative bromine ion in intense low-frequency electromagnetic fields. By solving numerically the two-electron time-dependent Schr\" odinger equation we…D. I. Tyurin, V. V. Strelkov, S. V. Popruzhenko·Jul 8, 2026SaveLearn
Microsecond-Scale Coherent Control of a Forbidden Clock Transition with Doppler-Free Multiphoton ExcitationsWe demonstrate two Doppler-free (DF) excitation schemes for coherent manipulation of the 1\!S0 - 3\!P0 clock transition in 88Sr that achieve microsecond-scale excitation times. The…Guglielmo Panelli, Erik J. Porter, V. Rose Knight et al.·Jul 7, 2026SaveLearn
Ionization-free femtosecond UV pulse filamentation resulting from non-perturbative Kerr effect saturation due to transient photoexcitation of moleculesOur experimental and numerical study of filamentation of the 248 nm 100 fs pulses in air, nitrogen, and oxygen at atmospheric pressure shows that the densities of photoelectrons in the filaments are…V. V. Strelkov, A. V. Shutov, V. D. Zvorykin·Jul 7, 2026SaveLearn
Constraints on Yukawa-type New Forces from the Lamb Shift in Muonic Hydrogen and DeuteriumWe develop an analytical framework to constrain Yukawa-type fifth-force interactions using the Lamb shift in hydrogen and deuterium. The sixfold coordinate-space integral for the energy shift is…Chung-Chien Huang, Li-Bang Wang·Jul 7, 2026SaveLearn
Investigating Role of Electron Correlation Effects via Triple Excitations for Precise Evaluation of Energies and Hyperfine Structure Constants in 23NaAccurate determination of hyperfine structure constants in atomic systems provides important insight into the interplay of electron correlation and relativistic effects in the nuclear region.…Vaibhav Katyal, B. K. Sahoo·Jul 7, 2026SaveLearn
Atomic oven with rapid thermal response for atom experimentsAtomic oven generating controllable atomic beam flux plays a fundamental role in quantum gas experiments. Here, we report a new heater design that can heat up an high temperature atomic oven with…Weilong Huang, Congjun Zou, Feiyu Dong et al.·Jul 7, 2026SaveLearn
Background-free calibrated electric-field imaging with Rydberg-state fluorescence and Autler-Townes splittingWe demonstrate a spatially resolved method for imaging millimeter-wave (mmWave) electric fields using Rydberg-state fluorescence in a warm atomic vapor. By utilizing a multi-photon ladder excitation…Gabriel Ko, Wiktor Krokosz, Mateusz Mazelanik et al.·Jul 7, 2026SaveLearn
Ab initio calculations of the electronic structure of Ac+Accurate spectroscopic investigations of the heaviest elements are inherently challenging, due to their short lifetimes and low production yields. Success of such measurements requires both dedicated…Genevieve Geehan, Marten Luit Reitsma, Johan David Polet et al.·Jul 7, 2026SaveLearn