Narrow-line-mediated Sisyphus cooling in the 3P2 metastable state of strontiumWe demonstrate narrow-line-mediated Sisyphus cooling of magnetically trapped strontium (Sr) in the 5s5p\,3P2 state. A 641 nm standing-wave, blue-detuned from the…Chun-Chia Chen, Ryoto Takeuchi, Shoichi Okaba et al.·Jun 24, 2025SaveLearn
Long-Range Interacting Particles on a Helix: A Statistical and Correlation Analysis of Equilibrium ConfigurationsWe provide a statistical and correlational analysis of the spatial and energetic properties of equilibrium configurations of a few-body system of two to eight equally charged classical particles that…J. M. Dörre, F. K. Diakonos, P. Schmelcher·Jun 23, 2025SaveLearn
2D transverse laser cooling of a hexapole focused beam of cold BaF moleculesA cryogenic buffer gas beam, an electrostatic hexapole lens, and 2D transverse Doppler laser cooling are combined to produce a bright beam of barium monofluoride (138Ba19F) molecules.…Joost W. F. van Hofslot, Izabella E. Thompson, Anno Touwen et al.·Jun 23, 2025SaveLearn
Turquoise Magic Wavelength of the 87Sr Clock TransitionOptical lattice clocks of fermionic strontium offer a versatile platform for probing fundamental physics and developing quantum technologies. The bivalent electronic structure of strontium gives rise…G. Kestler, R. J. Sedlik, E. C. Trapp et al.·Jun 23, 2025SaveLearn
High-power RF amplifier for ultracold atom experimentsWe report on the design and characterization of a high-power amplifier with an output power of 36.5 dBm for a frequency range of 50 MHz to 1000 MHz with a total gain of 40 dB. The amplifier is…Premjith Thekkeppatt, Edwin Baaij, Tijs van Roon et al.·Jun 22, 2025SaveLearn
Two-photon ionization of the K-shell of ions of the isonuclear sequence of a heavy atomThe shape and absolute values of the generalized cross-sections of the two-photon resonant single ionization of the K-shell of ions of the isonuclear sequence of a heavy nickel atom (28Ni - Ni26+ -…Alexey N. Hopersky, Alexey M. Nadolinsky, Sergey A. Novikov et al.·Jun 22, 2025SaveLearn
Attosecond tunneling time measurements through momentum squeezing in strong field ionizationTunneling of a particle through a potential barrier is a fundamental physical process and a major thought-provoking outcome of quantum physics. It is at the basis of multiple scientific and…Jonathan Dubois, Léonardo Rico, Camille Lévêque et al.·Jun 20, 2025SaveLearn
A Liquid-Nitrogen-Cooled Ca+ Ion Optical Clock with a Systematic Uncertainty of 4.4E-19We report a single-ion optical clock based on the 4S1/2-3D5/2 transition of the 40Ca+ ion, operated in a liquid nitrogen cryogenic environment,achieving a total systematic uncertainty of 4.4E-19.…Baolin Zhang, Zixiao Ma, Yao Huang et al.·Jun 20, 2025SaveLearn
CaF+CaF interactions in the ground and excited electronic states: implications for collisional lossesAccurate ab initio potential energy surfaces are essential to understand and predict collisional outcomes in ultracold molecular systems. In this study, we explore the intermolecular…Dibyendu Sardar, Marcin Gronowski, Michał Tomza et al.·Jun 20, 2025SaveLearn
Detection of twisted radiowaves with Rydberg atomsThe dynamics of the outer electron in an alkali atom in the presence of structured electromagnetic waves is described. The interaction of the alkali Rydberg atom with twisted radiowaves is…P. O. Kazinski, P. S. Korolev, V. A. Ryakin·Jun 19, 2025SaveLearn
Optical excitation and stabilization of ultracold field-linked tetratomic moleculesWe propose a coherent optical population transfer of weakly bound field-linked (FL) tetratomic molecules (tetramers) to deeper FL bound states using stimulated Raman adiabatic passage. We consider…Bijit Mukherjee, Michał Tomza·Jun 19, 2025SaveLearn
Short-Range Hard-Sphere Potential and Coulomb Interaction: Deser-Trueman Formula for Rydberg States of Exotic Atomic SystemsIn exotic atomic systems with hadronic constituent particles, it is notoriously difficult to estimate the strong-interaction correction to energy levels. It is well known that, due to the strength of…G. S. Adkins, U. D. Jentschura·Jun 19, 2025SaveLearn
Ultracold collisions of a neutral atom with a trapped ion in 1DWe present a fully quantum mechanical description of a free 6Li atom scattering from a trapped 171Yb+ ion in one dimension. By reformulating the system in polar coordinates and employing…Seth T. Rittenhouse, Lorenzo Oghittu, Arghavan Safavi-Naini et al.·Jun 18, 2025SaveLearn
Selective Bond Breaking in CO22+ Induced by Photoelectron RecoilAfter core-ionization of CO2, typically an Auger-Meitner decay takes place, leading to the formation of a dicationic molecule that may dissociate into CO+ and O+. We demonstrate…J. Weiherer, N. Melzer, M. Kircher et al.·Jun 18, 2025SaveLearn
Compatibility of trapped ions and dielectrics at cryogenic temperaturesWe study the impact of an unshielded dielectric x2013 here, a bare optical fiber x2013 on a 40Ca+ ion held several hundred μm away in a cryogenic surface…M. Bruff, L. Sonderhouse, K. N. David et al.·Jun 18, 2025SaveLearn
Effect of surface magnetism on the x-ray spectra of hollow atomsWe present evidence that the detection of surface magnetism without the application of an external magnetic field is possible by studying the x-ray emission of highly charged ions interacting at…P. Dergham, C. Prigent, Ch. V. Ahmad A. Brassart et al.·Jun 17, 2025SaveLearn
High-fidelity quantum state control of a polar molecular ion in a cryogenic environmentWe use a quantum-logic spectroscopy (QLS) protocol to control the quantum state of a CaH+ ion in a cryogenic environment, in which reduced thermal radiation extends rotational state lifetimes by an…Dalton Chaffee, Baruch Margulis, April Sheffield et al.·Jun 17, 2025SaveLearn
Multilevel Electromagnetically Induced Transparency CoolingElectromagnetically Induced Transparency (EIT) cooling is a well-established method for preparing trapped ion systems in their motional ground state. However, isolating a three-level system, as…Katya Fouka, Athreya Shankar, Ting Rei Tan et al.·Jun 17, 2025SaveLearn
Experimental determination of the sodium K-shell atomic fundamental parameters for X-ray spectroscopyReliable fundamental parameters are essential for accurate X-ray fluorescence analysis of sodium. This work presents updated experimental values with reliable uncertainties for sodium K-shell…Marie-Louis Venzke, Katja Frenzel, Philipp Hönicke·Jun 17, 2025SaveLearn
Series of molecular-like doubly excited states of a quasi-three-body Coulomb systemWe investigated resonant multiphoton excitation of high-angular-momentum planetary states of the strontium atom, a quasi-three-body Coulomb system, both experimentally and theoretically. A series of…Matthieu Génévriez, Maxence Jungers, Christian Rosen et al.·Jun 16, 2025SaveLearn
Magnetic hyperfine structure constants of 137BaF in the 21/2 and 23/2 excited statesHigh-precision molecular experiments testing the Standard Model of particle physics require an accurate understanding of the molecular structure at the hyperfine level, both for the control of the…Yuly Chamorro, Felix Kogel, Tim Langen et al.·Jun 15, 2025SaveLearn
Blue-detuned Magneto-optical Trap of BaF moleculesWe report the realization of a blue-detuned magneto-optical trap (BDM) of BaF molecules. The (1 + 1) type BDM and (1 + 2) type conveyor-belt MOT are explored. While the (1+1) BDM provides only weak…Zixuan Zeng, Shoukang Yang, Shuhua Deng et al.·Jun 15, 2025SaveLearn
Exceptional Point-enhanced Rydberg Atomic ElectrometersRydberg atoms, with their large transition dipole moments and extreme sensitivity to electric fields, have attracted widespread attention as promising candidates for next-generation quantum precision…Chao Liang, Ce Yang, Wei Huang et al.·Jun 15, 2025SaveLearn
Prospecting for lunar Helium-3 with a radio-frequency atomic magnetometerMining 3 He from lunar regolith has attracted significant interest in recent years due to the scarcity of 3 He on Earth and its diverse applications, from cryogenics and medical…I. K. Kominis, C. Kosmas·Jun 14, 2025SaveLearn
Sturmian basis set for the Dirac equation with finite nuclear size: Application to polarizability, Zeeman and hyperfine splitting, and vacuum polarizationWe investigate the application of the Sturmian basis set in relativistic atomic structure calculations. We propose a simple implementation of this approach and demonstrate its ability to provide…V. K. Ivanov, D. A. Glazov, A. V. Volotka·Jun 13, 2025SaveLearn