Strong Angular-Momentum-Coupling Dependence of Atomic Decay Angular Distributions in a Hybrid LS/LSJ FrameworkState production and its subsequent decay can each require a different angular-momentum coupling treatment. Although long recognized, this distinction is often overlooked in the two-step model, where…Theo J. M. Zouros·Sep 22, 2026SaveLearn
A low-cost modular FPGA-based control system for neutral atom tweezer arraysWe present the Quantum Atom Control Kit (QuACK), a low-cost FPGA-based control system that provides memory-efficient precise signal timing and low-delay measurement-based decision making for…Zeyu Ye, Varun Jorapur, Francesco Granato et al.·Sep 21, 2026SaveLearn
Anomalously enhanced lifetimes of low angular momentum Rydberg states in singly charged alkaline-earth metal ionsTrapped ions excited to high-lying electronic states, so-called Rydberg states, open new opportunities for quantum simulation and quantum computing. Generally, the fidelity of quantum coherent…Simon Euchner, Weibin Li, Igor Lesanovsky·Sep 21, 2026SaveLearn
Vector Measurements Using Integrated Radio Frequency Atomic MagnetometersWe demonstrate reconstruction of three-dimensional radio-frequency (RF) magnetic-field vectors using a pair of integrated RF atomic magnetometers operated with orthogonal bias-field orientations. A…Ayse Marasli, Thomas W. Kornack, D. Casey Oware et al.·Sep 21, 2026SaveLearn
Energy and Angular-Momentum Redistribution in Hydrogen Migdal IonizationMARVEL's first direct observation of Migdal ionization in neutron scattering marks an experimental milestone and opens a new avenue for probing electronic response to nuclear recoil. Hydrogen,…Haoyang Li, Zeyu Li, Ning Liu et al.·Sep 20, 2026SaveLearn
The use of coherent states in the excitation and ionization of atoms by a short symmetric pulseWe propose a new model for describing the excitation of atoms by short symmetric pulses. The theory is based on the impulse approximation and incorporates a confining potential approximated by a…Jorge E. Miraglia·Sep 19, 2026SaveLearn
Loss induced dynamics of optical pulses in saturable nonlinear mediaWe consider pulse propagation in a saturable nonlinear coupler whose other arm is dissipative and other is transparent. A flow of energy from transparent to dissipative arm takes place for weak value…Golam Ali Sekh·Sep 19, 2026SaveLearn
A CSFG-based neural network basis-selection method for large-scale RCI calculations within GRASPGWe present a neural network (NN) basis-selection method for large-scale relativistic configuration interaction (RCI) calculations in GRASPG. The method employs configuration state function generators…Chaofan Shi, Shaowei Tian, Ran Si et al.·Sep 18, 2026SaveLearn
Integration of the NIST Spectroscopic Plate Archive into the Harvard Plate StacksFor many decades, the National Institute of Standards and Technology (NIST) Atomic Spectroscopy Group housed a growing collection of thousands of photographic glass plate negatives. With the closure…Jacob Ward, Thom Burns, Lisa Bravata et al.·Sep 17, 2026SaveLearn
Effective Conservation and Bistability of Atomic Alignment under Strong Spin~ExchangeWe present a phenomenological model of anomalous alignment signals in dense cesium vapor under linearly polarized pumping and fast spin exchange near zero magnetic field. Despite the absence of a…Anton K. Vershovskii·Sep 17, 2026SaveLearn
Small-Angle Differential Cross Sections for Symmetrical Resonant Charge Exchange in Molecular HydrogenWe measured state selective scattering angle distributions in non-dissociative-state single electron capture in 5, 7.5, 10 keV/u, [H+ + H2] and…Jibak Mukherjee, Kamal Kumar, Harpreet Singh et al.·Sep 17, 2026SaveLearn
Observation of multiphoton entanglement in resonance fluoresceResonance fluorescence, the process in which a single two-level quantum emitter interacts with a near-resonant coherent light, is a cornerstone of quantum optics as a paradigmatic light-matter…Xiao-Long Zhou, Jian Wang, Ze-Min Shen et al.·Sep 17, 2026SaveLearn
Improved systematic uncertainty evaluation of the 171Yb optical lattice clock NMIJ-Yb1 with uncertainty of 2.6×10-17We report a systematic uncertainty evaluation of the 171Yb optical lattice clock NMIJ-Yb1 (NMIJ: National Metrology Institute of Japan) with a fractional frequency uncertainty of…Takumi Kobayashi, Akiko Nishiyama, Ikuhiko Saito et al.·Sep 16, 2026SaveLearn
Second-Order Rayleigh-Schrödinger Perturbation Theory for the GRASP2018 Package: Three-Particle Feynman Diagram Contribution to Core-Valence CorrelationsIn order to ascertain the precise atomic characteristics, it is important to incorporate a wide range of electron correlations in the computational analysis. However, it is important to note that…G. Gaigalas, P. Rynkun, L. Kitovienė·Sep 16, 2026SaveLearn
Second-Order Rayleigh-Schrödinger Perturbation Theory for the GRASP2018 Package: Three-Particle Feynman Diagram Contribution to Valence-Valence CorrelationsThe method based on the second-order perturbation theory to identify the most important configuration state functions of the various correlations is extended to include valence-valence correlations,…G. Gaigalas, P. Rynkun, L. Kitovienė·Sep 16, 2026SaveLearn
Electrostatic quadrupole lens for focusing a cryogenic 205TlF molecular beamPrecision measurements with molecules require molecular beams with high flux and narrow divergence. Here we present the design, implementation, and characterization of an electrostatic quadrupole…Pengyu Zhou, Olivier Grasdijk, David DeMille et al.·Sep 15, 2026SaveLearn
Angle-of-Arrival Determination of Radio-Frequency Fields Using Stark-Shifted Rydberg-EIT SpectraWe demonstrate a method for determining the magnitude of the angle of arrival (AoA) of a linearly polarized radio-frequency (RF) field using the angle-dependent spectral amplitudes of AC…Rajavardhan Talashila, Zoya Popovic, Nikunjkumar Prajapati et al.·Sep 15, 2026SaveLearn
Improved calculation of the hyperfine structure of muonic heliumUsing perturbation theory for the fine-structure constant α and the electron-to-muon mass ratio, we calculated new contributions to the hyperfine structure of the ground state of the muon-electron…F. A. Martynenko, K. A. Seredina, A. P. Martynenko·Sep 15, 2026SaveLearn
Second-Order Rayleigh-Schrödinger Perturbation Theory for the Grasp2018 Package: Valence-Valence CorrelationsThe accurate description of electron correlations remains a major challenge in atomic calculations. In order to perform accurate calculations, it is necessary to consider the various types of…G. Gaigalas, P. Rynkun, L. Kitovienė·Sep 15, 2026SaveLearn
Second-Order Rayleigh-Schrödinger Perturbation Theory for the GRASP2018 Package: Core-Core CorrelationsGrasp package is based on the relativistic configuration interaction in which accurate calculations, accounting for valence, valence-valence, core-valence, core, and core-core electron correlations,…G. Gaigalas, P. Rynkun, L. Kitovienė·Sep 15, 2026SaveLearn
Orbital-angular-momentum partition in hydrogen photoionization by a monochromatic vortex beamUnderstanding how optical orbital angular momentum (OAM) is transferred to matter requires treating recoil and translational motion alongside the internal electronic dynamics. We develop a…Zhongchen Xing, Chengyin Wu, Zheng Li et al.·Sep 15, 2026SaveLearn
Second-Order Rayleigh-Schrödinger Perturbation Theory for the GRASP2018 Package: Core CorrelationsThe paper presents a further development of the method G. Gaigalas, P. Rynkun, L. Kitovienė, Second-Order of Rayleigh-Schrödinger Perturbation Theory for the Grasp2018 Package: Core-Valence…G. Gaigalas, P. Rynkun, L. Kitovienė·Sep 15, 2026SaveLearn
Absolute frequency measurement of the 40Ca+ clock transition using a GNSS link to the SI secondWe report the absolute frequency measurement of the 4s 2S1/2 3d 2D5/2 40Ca+ clock transition with respect to the SI second. To perform this measurement, a…M. Guevara-Bertsch, M. K. Joshi, M. I Hussain et al.·Sep 14, 2026SaveLearn
Interactions and excitation blockade of Rydberg macrodimersWe present a theoretical study of interactions between Rydberg macrodimers, molecular bound states of Rydberg atoms, and the largest known neutral homonuclear diatomic molecules. Accounting for the…Dhiya Varghese, Rejish Nath, Simon Hollerith et al.·Sep 14, 2026SaveLearn
Second-order Rayleigh-Schrödinger Perturbation Theory for the Grasp2018 Package: Core-valence CorrelationsThe General Relativistic Atomic Structure package [ Grasp2018, C. Froese Fischer, G. Gaigalas, P. Jönsson, J. Bieroń, Comput. Phys. Commun. (2019), DOI: 10.1016/j.cpc.2018.10.032], is based on…G. Gaigalas, P. Rynkun, L. Kitovienė·Sep 14, 2026SaveLearn