Sub-shot-noise interferometry with two-mode quantum statesWe study the feasibility of sub-shot-noise interferometry with imperfect detectors, starting from twin-Fock states and two mode squeezed vacuum states. We derive analytical expressions for the…Quentin Marolleau, Charlie Leprince, Victor Gondret et al.·Jul 31, 2023SaveLearn
Sub-Doppler laser cooling and magnetic trapping of natural-abundance fermionic potassiumWe report on reaching sub-Doppler temperatures of 40K in a single-chamber setup using a dispenser-based potassium source with natural (0.012\% of 40K) isotopic composition. With gray…Mateusz Bocheński, Mariusz Semczuk·Jul 31, 2023SaveLearn
Observation of photoassociation resonances in ultracold atom-molecule collisionsPhotoassociation of ultracold atoms is a resonant light-assisted collision process, in which two colliding atoms absorb a photon and form an excited molecule. Since the first observation about three…Jin Cao, Bo-Yuan Wang, Huan Yang et al.·Jul 29, 2023SaveLearn
RydIQule: A Graph-based Paradigm for Modelling Rydberg and Atomic SystemsWe describe a numerical technique and accompanying open-source Python software package called RydIQule. RydIQule uses a directional graph, relying on adjacency matrices and path-finding to generate a…Benjamin N. Miller, David H. Meyer, Teemu Virtanen et al.·Jul 28, 2023SaveLearn
A Hunt for Highly Charged Ions as Ultra-stable Optical Clock Candidates: Art of the energy level-crossing approachWe examine energy level-crossings of fine-structure (FS) levels in the heavier highly charged ions (HCIs) with d6 and d8 configurations. From the analysis, we find that some of these HCIs are…Yan-mei Yu, B. K. Sahoo·Jul 26, 2023SaveLearn
Extension of Judd-Ofelt theory: Application on Eu3+, Nd3+ and Er3+We present a modified version of the Judd-Ofelt theory, which describes the intensities of f-f transitions for trivalent lanthanide ions (Ln3+) in solids. In our model, the properties of the…Gohar Hovhannesyan, Vincent Boudon, Maxence Lepers·Jul 26, 2023SaveLearn
Roadmap towards the redefinition of the secondThis paper outlines the roadmap towards the redefinition of the second, which was recently updated by the CCTF Task Force created by the CCTF in 2020. The main achievements and the open challenges…N. Dimarcq, M. Gertsvolf, G. Mileti et al.·Jul 26, 2023SaveLearn
Quantifying Robustness of Attosecond Transient Absorption Spectroscopy for Vibronic Coherence in Charge MigrationProbing vibronic coherence in molecules has been a central topic in ultrafast science, as it is an essential prerequisite to monitoring electronic motion. While experiments have demonstrated that…C. H. Yuen, C. D. Lin·Jul 25, 2023SaveLearn
Towards the formation of a positronium coherent beamPositronium (Ps) has emerged as a promising test particle within the QUPLAS collaboration for investigating the gravitational effect. In this work, we present a novel approach to generate a…M. Sacerdoti, V. Toso, G. Vinelli et al.·Jul 24, 2023SaveLearn
Effects of p-wave Interactions on Borromean Efimov Trimers in Heavy-Light Fermi SystemsWe investigate the effects of p-wave interactions on Efimov trimers in systems comprising two identical heavy fermions and a light particle, with mass ratios larger than 13.6. Our focus lies on…Cai-Yun Zhao, Hui-Li Han, Ting-Yun Shi·Jul 24, 2023SaveLearn
Optical pumping enhancement of a free-induction-decay magnetometerSpin preparation prior to a free-induction-decay (FID) measurement can be adversely affected by transverse bias fields, particularly in the geophysical field range. A strategy that enhances the spin…Dominic Hunter, Marcin S. Mrozowski, Allan McWilliam et al.·Jul 21, 2023SaveLearn
Making molecules by mergoassociation: two atoms in adjacent nonspherical optical trapsMergoassociation of two ultracold atoms to form a weakly bound molecule can occur when two optical traps that each contain a single atom are merged. Molecule formation occurs at an avoided crossing…Robert C. Bird, C. Ruth Le Sueur, Jeremy M. Hutson·Jul 18, 2023SaveLearn
The Spectrum and Energy Levels of the Low-lying Configurations of Nd IIIEmission spectra of neodymium (Nd, Z=60) were recorded using Penning and hollow cathode discharge lamps in the region 11500-54000 cm-1 (8695-1852 A) by Fourier transform spectroscopy at…Milan Ding, Juliet C. Pickering, Alexander N. Ryabtsev et al.·Jul 18, 2023SaveLearn
Potential energy curves of molecular nitrogen up to N24+The potential energy curves for molecular ions up to N24+ are calculated in an ab initio manner using the multi configurational self-consistent field method. Specifically, we implement in an…Antonis Hadjipittas, Agapi Emmanouilidou·Jul 18, 2023SaveLearn
All-optical Differential Radii in ZincWe conduct high-accuracy calculations of isotope shift (IS) factors of the states involving the D1 and D2 lines in Zn II. Together with a global fit to the available optical IS data, we extract…B. K. Sahoo, B. Ohayon·Jul 18, 2023SaveLearn
Ideal Two-Color Field Ratio for Holographic Angular Streaking of ElectronsWe study strong field ionization of molecular hydrogen in highly intense co-rotating two-color (CoRTC) laser fields. The measured electron momentum distributions show alternating half-rings (AHR)…D. Trabert, A. Geyer, N. Anders et al.·Jul 17, 2023SaveLearn
Low-energy tests of Delbr\"uck scatteringWe present a theoretical study of elastic photon scattering by atomic targets. This process is of special interest since various channels from atomic and nuclear physics as well as quantum…J. Sommerfeldt, S. Strnat, V. A. Yerokhin et al.·Jul 17, 2023SaveLearn
Absorption spectroscopy for laser cooling and high-fidelity detection of barium monofluoride moleculesCurrently, there is great interest in laser cooling of barium monofluoride (BaF) molecules for precision tests of fundamental symmetries. We use high-resolution absorption spectroscopy to…Marian Rockenhäuser, Felix Kogel, Einius Pultinevicius et al.·Jul 17, 2023SaveLearn
Interference filter based external-cavity diode laser with combined dual interference filters and largely adjustable feedback rangeExternal-cavity diode lasers (ECDL) are widely used as light sources in laser spectroscopy, atomic physics, and quantum optics. This study demonstrated a home-made 852-nm ECDL with variable feedback,…Rui Chang, Jun He, Junmin Wang·Jul 17, 2023SaveLearn
Implementing an electronic sideband offset lock for precision spectroscopy in radiumWe demonstrate laser frequency stabilization with at least 6 GHz of offset tunability using an in-phase/quadrature (IQ) modulator to generate electronic sidebands (ESB) on a titanium sapphire laser…Tenzin Rabga, Kevin G. Bailey, Michael Bishof et al.·Jul 14, 2023SaveLearn
A scalable scanning transfer cavity laser stabilization scheme based on the Red Pitaya STEMlab platformMany experiments in atomic and molecular physics require simultaneous frequency stabilization of multiple lasers. We present a stabilization scheme based on a scanning transfer cavity lock that is…Einius Pultinevicius, Marian Rockenhäuser, Felix Kogel et al.·Jul 14, 2023SaveLearn
Characterizing current noise of commercial constant-current sources by using of an optically-pumped rubidium atomic magnetometerThis paper introduces a method for characterizing the current noise of commercial constant-current sources(CCSs) using a free-induction-decay(FID) type optically-pumped rubidium atomic magnetometer…Ni Zhao, Lulu Zhang, Yongbiao Yang et al.·Jul 14, 2023SaveLearn
Instantaneous Quasiphoton in Strong-Field IonizationPhoton is a concept that does not apply at the instantaneous level when light is described by classical electromagnetic fields. Exploiting the dynamical rotational symmetry of circularly or…Yongzhe Ma, Hongcheng Ni, Yang Li et al.·Jul 14, 2023SaveLearn
Stringent test of QED with hydrogenlike tinInner-shell electrons naturally sense the electric field close to the nucleus, which can reach extreme values beyond 1015\,V/cm for the innermost electrons. Especially in…J. Morgner, B. Tu, C. M. König et al.·Jul 13, 2023SaveLearn
Tracking Berry curvature effect in molecular dynamics by ultrafast magnetic x-ray scatteringThe spin-dependent Berry force is a genuine effect of Berry curvature in molecular dynamics, which can dramatically result in spatial spin separation and change of reaction pathways. However, the way…Ming Zhang, Xiaoyu Mi, Linfeng Zhang et al.·Jul 13, 2023SaveLearn