Low-energy positron scattering from metastable heliumLow-energy positron scattering from singlet and triplet metastable He(1s2s) is investigated using the R-matrix propagation method in hyperspherical coordinates. Elastic and positronium-formation…Ning-Ning Gao, Hui-Li Han, Ting-Yun Shi et al.·Jun 28, 2026SaveLearn
Hyperfine-structure constants of the 45\!Sc II ion and the nuclear quadrupole momentIn this work, we calculate the hyperfine-structure constants of the 45Sc+ ion using a relativistic hybrid approach that combines configuration-interaction and coupled-cluster…Yong-Bo Tang, Yu-Shan Zhang, Kai Wang·Jun 28, 2026SaveLearn
Dual Magnetic and Electric Dipole Symmetry: Pseudo Angular Momentum in Parity Space and the Electric Landé g-FactorElectric dipole moments (EDMs) are sensitive probes of fundamental symmetries and central to searches for physics beyond the Standard Model. We present a symmetry-based, Zeeman-analogue operator…Michael E. Tobar·Jun 27, 2026SaveLearn
An atom chip interferometerWe have realized an interferometer using a thermal cloud of magnetically trapped rubidium 87 atoms on a chip. The interferometer resembles a Ramsey interferometer with a state selective spatial…B. Wirtschafter, C. I. Westbrook, M. Dupont-Nivet·Jun 26, 2026SaveLearn
Non-dipole effects in two-photon double ionization of the K-shell of a beryllium-like atomic ionIn the second order of the non-relativistic quantum perturbation theory and outside the framework of the dipole approximation for the operator of the radiation transition between continuum-spectrum…Alexey N. Hopersky, Alexey M. Nadolinsky, Rustam V. Koneev et al.·Jun 25, 2026SaveLearn
Quantum statistics on atom-ion Feshbach resonancesWe investigate three-body recombination in a hybrid atom-ion system consisting of a single trapped Ba+ ion immersed in a two-component Fermi gas of Li atoms near an atom-ion Feshbach resonance. By…Joachim Siemund, Fabian Thielemann, Jonathan Grieshaber et al.·Jun 25, 2026SaveLearn
Quasiperiodic nondipole ionization dynamics in the x-ray stabilization regimeRecent advances in strong x-ray laser techniques enable the study of nonlinear multiphoton ionization in extreme high-frequency fields. Although the stabilization regime in such fields is…Aleksandr V. Boitsov, Karen Z. Hatsagortsyan, Christoph H. Keitel·Jun 25, 2026SaveLearn
A Robust Strontium Tweezer Apparatus for Quantum ComputingNeutral atoms for quantum computing applications show promise in terms of scalability and connectivity. We demonstrate the realization of a versatile apparatus capable of stochastically loading a 5x5…Marijn Venderbosch, Rik van Herk, Zhichao Guo et al.·Jun 25, 2026SaveLearn
Infinite-time surface flux for full-dimensional three-body breakup dynamicsWe derive an infinite-time surface-flux formulation for full-dimensional three-body breakup dynamics in intense laser fields. The method is designed as a post-pulse extension of time-dependent…Jinzhen Zhu·Jun 24, 2026SaveLearn
Coupling of negative-positive trapped-ion pairsDirect motional coupling of opposite-charge trapped-ion pairs could provide a pathway to extend ultra-low temperatures and quantum control to negative ions that lack the suitable electronic energy…Daniel Kienzler·Jun 24, 2026SaveLearn
Statistical Characteristics of Tunneling States in Strong-Field Atomic IonizationThe state of the tunneling electron under the potential barrier is important in strong laser-atom interaction but is difficult to identify. Recent experiments showed that the tunneling electron may…M. W. Cao, Z. Y. Chen, J. N. Wu et al.·Jun 24, 2026SaveLearn
Radioactive Molecules as Laboratories of Fundamental PhysicsRadioactive molecules provide a powerful new platform in the search for new physics at energy scales complementary to high-energy particle colliders. By combining enhancements from nuclear properties…A. Jadbabaie, S. Ebadi, R. F. Garcia Ruiz et al.·Jun 24, 2026SaveLearn
Photoelectron spectroscopy of 3s3p doubly excited helium dressed with strong near-infrared laser fieldsWe report time-resolved photoelectron spectroscopy of the 3s3p doubly excited states of helium dressed by an intense near-infrared (NIR) laser field. Using synchronized XUV free-electron-laser and…Mizuho Fushitani, Chien-Nan Liu, Yuki Ono et al.·Jun 24, 2026SaveLearn
Two-Electron Effects Extend High-Harmonic Generation into the keV RegimeTwo-electron processes can generate high harmonics beyond the conventional single-active-electron cutoff. Motivated by recent experimental evidence of an extended secondary plateau in the helium…Isobel McSweeney, Andres Marchisio, Javier Rivera-Dean et al.·Jun 23, 2026SaveLearn
Nonlinear refractive index of warm rubidium vaporThe potential to precisely control both the linear and nonlinear index of refraction through optical manipulation of the atomic states has recently pushed warm alkali vapors to the forefront of…L. Kardum, G. Premec, N. Šantić et al.·Jun 23, 2026SaveLearn
Field validation of GNSS-independent positioning enhancement using a wearable ultra-stable quantum magnetometerIncreasing the resilience of positioning systems that currently rely on Global Navigation Satellite System (GNSS) signals can be achieved by incorporating stable and sensitive measurements of the…Stirling Scholes, Dominic Hunter, Courtney Dyer et al.·Jun 23, 2026SaveLearn
Doppler-enhanced superheterodyne Rydberg microwave receiverWe report the enhanced sensitivity of the Rydberg microwave (MW) receiver by exploiting the Doppler effect in a vapor cell. A two-photon Rydberg ladder scheme is implemented via the co-propagation of…Yuwen Yin, Ruimin Chen, Shibing Ji et al.·Jun 23, 2026SaveLearn
An Al+ clock with 1.6×10-18 systematic uncertainty and its frequency ratiosAdvances in optical clocks motivate a redefinition of the second, requiring rigorous evaluations of systematic uncertainties and robust consistency among the clocks. Here, we report the full…Fabian Dawel, Johannes Kramer, Derwell Drapier et al.·Jun 23, 2026SaveLearn
Dual-isotope narrow-line MOT of dysprosium by phase modulationWe report on the characterization of a narrow-line magneto-optical trap (MOT), where two different isotopes of the dysprosium (Dy) atom can be simultaneously loaded and trapped. We rely on phase…M. Dürbeck, L. Reihs, J. Seifert et al.·Jun 22, 2026SaveLearn
Analysis of the frequency shift in coherent population trapping resonance's dynamic continuous-wave spectroscopy at the phase-jump modulation and its comparison with the conventional approachWe present the research of dynamic continuous-wave spectroscopy of the coherent population trapping resonance at the phase-jump modulation. Λ system of levels supplemented by a nonabsorbing state and…E. D. Chivilis, E. A. Tsygankov·Jun 22, 2026SaveLearn
Non-adiabatic Effects Induced by Strong Light-Matter Coupling in Cavity QEDWe present a systematic study of the diagonal Born-Oppenheimer correction (DBOC) for atoms and molecules embedded in optical cavities and interacting with a quantized electromagnetic field. By…T. Zalialiutdinov, D. Solovyev, J. J. Lopez-Rodriguez et al.·Jun 22, 2026SaveLearn
Vortex photoelectron holography in strong-field tunneling ionizationVortex electrons, characterized by a helical phase front, offer unique advantages for probing material structures. Such electrons can be generated via tunneling ionization in strong laser fields. In…Yongkun Chen, Oleg I. Tolstikhin, Toru Morishita et al.·Jun 22, 2026SaveLearn
Resolution of the hyperfine puzzle and its significance for two fermion Dirac atomsThe hyperfine interaction in the ground state of a hydrogen atom of assumed radius R is proportional to -1/R3, raising the question of why the hyperfine interaction does not lead to collapse of…Gordon Baym, Glennys Farrar·Jun 22, 2026SaveLearn
Capture velocities for direct loading of heavy molecules into conveyor-belt magneto-optical trapsConveyor-belt magneto-optical traps (CB-MOTs) use blue-detuned polarization-gradient forces to provide simultaneous cooling, confinement, and loading on type-II molecular transitions. Recent…Shoukang Yang, Shuhua Deng, Zixuan Zeng et al.·Jun 20, 2026SaveLearn
Quantitative analysis of resonant ionization by smooth laser pulses: Connection between effective Hamiltonian theory and strong-field dressed continuaResonant photoionization in the intense high-frequency regime can exhibit extremely asymmetric Autler-Townes doublets whose origin remains debated. It has been attributed either to interference…Jakob Nicolai Bruhnke, Jan Marcus Dahlström·Jun 19, 2026SaveLearn