Autocorrelation Measurement of Attosecond Pulses Based on Two-Photon Double IonizationAutocorrelation measurement is theoretically demonstrated to characterize attosecond pulses by studying the two-photon double ionization (TPDI) process. An interferometric autocorrelation curve is…Fei Li, Kun Zhao, Bing-Bing Wang et al.·Sep 23, 2024SaveLearn
A conveyor-belt magneto-optical trap of CaFWe report the experimental realization of a conveyor-belt magneto-optical trap for calcium monofluoride (CaF) molecules. The obtained highly-compressed cloud has a mean radius of 64(5) μm and a…Scarlett S. Yu, Jiaqi You, Yicheng Bao et al.·Sep 23, 2024SaveLearn
The ground electronic state of CS: the potential curve and associated Born-Oppenheimer rovibrational spectrumBasics of the Born-Oppenheimer (B-O) approximation are reviewed. Assuming the domain of applicability of B-O approximation is limited to 4 significant digits (s.d.) in energy spectrum, where mass,…Horacio Olivares-Pilon, Alexander V Turbiner·Sep 23, 2024SaveLearn
Cold Beam Optical Clock with Multifrequency SpectroscopyWe demonstrate an optical clock based on Ramsey-Bord\'e interferometry in a laser-cooled 40Ca beam. The mean velocity is reduced by an order of magnitude relative to a thermal beam and the…William G. Tobias, Bryan Hemingway, Steven Peil·Sep 20, 2024SaveLearn
Multiple ionization, fragmentation and dehydrogenation of coronene in collisions with swift protonsCoronene molecules have been bombarded with protons of energy ranging from 100 to 300 keV. The time of flight mass spectra have been recorded using a two stage Wiley McLaren type spectrometer. A…Shashank Singh, Sanjeev Kumar Maurya, Shikha Chandra et al.·Sep 20, 2024SaveLearn
Chaotic dynamics in spin torque nano oscillator driven by voltage feedbackNon-linear dynamics, including auto-oscillations, chaotic dynamics, and synchronization, are integral to physical and biological applications and can be excited in spintronic devices. In this study,…Meenakshi Sravani, Swapnil Bhuktare·Sep 20, 2024SaveLearn
Minimising Interference in Low-Pressure Supersonic Beam SourcesFree-jet atomic, cluster and molecular sources are typically used to produce beams of low-energy, neutral particles and find application in a wide array of technologies, from neutral atom microscopes…Jack Kelsall, Aleksandar Radic, John Ellis et al.·Sep 19, 2024SaveLearn
Doppler-free selective reflection spectroscopy of electric-quadrupole transitionsElectric-dipole-forbidden transitions play an important role as in quantum sensing, quantum information, and fundamental test in physics. As such, the development of novel and sensitive spectroscopic…Eng Aik Chan, Syed Abdullah Aljunid, Athanasios Laliotis et al.·Sep 18, 2024SaveLearn
Electric field control for experiments with atoms in Rydberg statesAtoms excited to Rydberg states have recently emerged as a valuable resource in neutral atom platforms for quantum computation, quantum simulation, and quantum information processing. Atoms in…Aishik Panja, Yupeng Wang, Xinghan Wang et al.·Sep 18, 2024SaveLearn
Photoionization of atoms and ions from endohedral anionsWe study the interconnection between the results of two qualitatively different approximate calculations of photoionization cross sections, σn, for neutral atoms (A) or their cations…V. K. Dolmatov, L. V. Chernysheva, V. G. Yarzhemsky·Sep 18, 2024SaveLearn
Temperature sensitivity of a Thorium-229 solid-state nuclear clockQuantum state-resolved spectroscopy of the low energy thorium-229 nuclear transition was recently achieved. The five allowed transitions within the electric quadrupole structure were measured to the…Jacob S. Higgins, Tian Ooi, Jack F. Doyle et al.·Sep 17, 2024SaveLearn
Quantitative comparison of TDDFT-calculated HHG yields in ring-shaped organic moleculesWe compare the high-harmonic-generation (HHG) yield driven by a mid-infrared laser in three organic ring-shaped molecules, calculated using time-dependent density-functional theory (TDDFT). We…Stephanie N. Armond, Kyle A. Hamer, Ravi Bhardwaj et al.·Sep 17, 2024SaveLearn
On the effect of "glancing" collisions in the cold atom vacuum standardWe theoretically investigate the effect of ``glancing" collisions on the ultra-high vacuum (UHV) pressure readings of the cold atom vacuum standard (CAVS), based on either ultracold 7Li or…Stephen P. Eckel, Daniel S. Barker, James A. Fedchak et al.·Sep 17, 2024SaveLearn
Emergent Topological Hall Effect in Fe-doped Monolayer WSe2The topological Hall effect (THE) has attracted great attention since it provides an important probe of the interaction between electron and topological spin textures. THE has been considered an…Mengqi Fang, Siwei Chen, Chunli Tang et al.·Sep 17, 2024SaveLearn
In-situ measurements of light diffusion in an optically dense atomic ensembleThis study introduces a novel method to investigate in-situ light transport within optically thick ensembles of cold atoms, exploiting the internal structure of alkaline-earth metals. A method for…Antoine Glicenstein, Apoorva Apoorva, Daniel Benedicto Orenes et al.·Sep 17, 2024SaveLearn
Lattice Light Shift Evaluations In a Dual-Ensemble Yb Optical Lattice ClockIn state-of-the-art optical lattice clocks, beyond-electric-dipole polarizability terms lead to a break-down of magic wavelength trapping. In this Letter, we report a novel approach to evaluate…Tobias Bothwell, Benjamin D. Hunt, Jacob L. Siegel et al.·Sep 16, 2024SaveLearn
Accurate vector optically pumped magnetometer with microwave-driven Rabi frequency measurementsRobust calibration of vector optically pumped magnetometers (OPMs) is a nontrivial task, but increasingly important for applications requiring high-accuracy such as magnetic navigation, geophysics…Christopher Kiehl, Thanmay S. Menon, Svenja Knappe et al.·Sep 15, 2024SaveLearn
Spectroscopy of electric dipole and quadrupole transitions in 224Ra+We report on spectroscopy of the low-lying electronic transitions in 224Ra+. The ion's low charge to mass ratio and convenient wavelengths make 224Ra+ a promising optical clock…Spencer Kofford, Haoran Li, Robert Kwapisz et al.·Sep 15, 2024SaveLearn
Revised 3He nuclear charge radius due to electronic hyperfine mixingThe significant discrepancy in the difference of squared nuclear charge radii R2 of 3,4He obtained from electronic-atom or muonic-atom energy levels is a puzzle. In this paper, we show…Xiao-Qiu Qi, Pei-Pei Zhang, Zong-Chao Yan et al.·Sep 14, 2024SaveLearn
Variational Calculation of the Hyperfine Stark Effect in Atomic 87Rb, 133Cs, and 169TmAn electronically variational approach to the calculation of atomic hyperfine structure transition energies under the influence of static external electric fields is presented. The method avoids the…Timo Fleig·Sep 13, 2024SaveLearn
A Simple approach for precision calculation of Bethe logarithmIn this article we propose a simple approach for the precision calculation of Bethe logarithm. The leading contributions are obtained using specific operators, while the remaining terms are…San-Jiang Yang, Jing Chi, Wan-Ping Zhou et al.·Sep 13, 2024SaveLearn
The SWaP plot: Visualising the performance of portable atomic clocks as a function of their size, weight and powerPrecision timekeeping is fundamental to modern technologies such as Global Navigation Satellite Systems (GNSS), communication networks, financial transactions, and power grid management. Over the…Benjamin White, Rachel Offer, Ashby Hilton et al.·Sep 13, 2024SaveLearn
Confinement-induced field-linked states of ultracold polar moleculesWe predict the existence of stable bound states between pairs of ultracold diatomic molecules with the aid of a static electric field and 1D harmonic confinement. We focus on collisions of NaK-NaK…Reuben R. W. Wang, John L. Bohn·Sep 12, 2024SaveLearn
Acoustic higher-order topological insulator from momentum-space nonsymmorphic symmetriesMomentum-space nonsymmorphic symmetries, stemming from the projective algebra of synthetic gauge fields, can modify the manifold of the Brillouin zone and lead to a variety of topological phenomena.…Jinbing Hu, Kai Zhou, Tianle Song et al.·Sep 12, 2024SaveLearn
QED Corrections in Unstable VacuumSelf-energy and vacuum polarization effects in quantum electrodynamics (QED) are calculated for the supercritical Coulomb field, where Dirac energy levels become embedded in the negative-energy…V. A. Zaytsev, V. A. Yerokhin, C. H. Keitel et al.·Sep 12, 2024SaveLearn