Imaging-assisted single-photon Doppler-free laser spectroscopy and the ionization energy of metastable triplet heliumSkimmed supersonic beams provide intense, cold, collision-free samples of atoms and molecules are one of the most widely used tools in atomic and molecular laser spectroscopy. High-resolution optical…Gloria Clausen, Simon Scheidegger, Josef A. Agner et al.·Aug 16, 2023SaveLearn
A scheme for quantum-logic based transfer of accuracy in polarizability measurement for trapped ions using a moving optical latticeOptical atomic clocks based on trapped ions suffer from systematic frequency shifts of the clock transition due to interaction with blackbody radiation from the environment. These shifts can be…Fabian Wolf·Aug 15, 2023SaveLearn
Rydberg-EIT of 85Rb vapor in a cell with Ne buffer gasWe investigate Rydberg electromagnetically induced transparency (EIT) of 85Rb atomic vapor in a glass cell that contains a 5-Torr neon buffer gas. At low probe power, EIT lines exhibit a…Nithiwadee Thaicharoen, Ryan Cardman, Georg Raithel·Aug 15, 2023SaveLearn
Threshold studies for a hot beam superradiant laser including an atomic guiding potentialRecent theoretical predictions hint at an implementation of a superradiant laser based on narrow optical clock transitions by using a filtered thermal beam at high density. Corresponding numerical…Martin Fasser, Christoph Hotter, David Plankensteiner et al.·Aug 10, 2023SaveLearn
Rydberg excitation through detuned microwave transition in rubidiumWe study the excitation of Rydberg states in warm rubidium vapor. Using an inverted wavelength excitation scheme, we observe the effect of microwave coupling between Rydberg states through…E. Brekke, C. Umland·Aug 9, 2023SaveLearn
Doppler-Enhanced Quantum Magnetometry with thermal Rydberg atomsWe report experimental measurements showing how one can combine quantum interference and thermal Doppler shifts at room temperature to detect weak magnetic fields. We pump 87Rb atoms to a…Shovan Kanti Barik, Silpa B S, M Venkat Ramana et al.·Aug 9, 2023SaveLearn
Excitation of the 229Th nucleus by the hole in the inner electronic shellsThe 229Th nucleus has a long-lived isomeric state A* at 8.338(24) eV [Kraemer et al, Nature, 617, 706 (2023)]. This state is connected to the ground state by an M1 transition. For a…M. G. Kozlov, A. V. Oleynichenko, D. Budker et al.·Aug 9, 2023SaveLearn
Relativistic treatment of diamagnetic susceptibility of heliumWe report theoretical calculations of the diamagnetic susceptibility, 0, of helium atom. We determined the complete relativistic correction to 0 of the order of α4, where…Mariusz Puchalski, Michał Lesiuk, Bogumił Jeziorski·Aug 9, 2023SaveLearn
PyStructureFactor: A Python code for the molecular structure factor in tunneling ionization ratesTunneling ionization is at the core of strong-field and attosecond science. In this paper, we present PyStructureFactor - a general Python code towards the calculation of the structure factor in the…Shanshan Song, Mingyu Zhu, Hongcheng Ni et al.·Aug 9, 2023SaveLearn
Revisiting the Divergent Multipole Expansion of Atom-Surface Interactions: Hydrogen and Positronium, alpha-Quartz, and PhysisorptionWe revisit the derivation of multipole contributions to the atom-wall interaction previously presented in [G. Lach et al., Phys. Rev. A 81, 052507 (2010)]. A careful reconsideration of the…Ulrich D. Jentschura·Aug 9, 2023SaveLearn
Bloch Oscillation Phases investigated by Multi-path Stuckelberg Atom InterferometryAtoms undergoing Bloch oscillations (BOs) in an accelerating optical lattice acquire momentum of two photon recoils per BO. This technique provides a large momentum transfer tool for atom optics, but…Tahiyat Rahman, Anna Wirth-Singh, Andrew Ivanov et al.·Aug 8, 2023SaveLearn
Comment on "Matter-wave interferometry with helium atoms in low-l Rydberg states''Tommey and Hogan [Phys. Rev. A, 104, 033305 (2021)] have reported a matter-wave interference experiment using Rydberg atoms traveling through inhomogeneous electric fields at approximately 2000 m/s.…D. Z. Chan, J. D. D. Martin·Aug 7, 2023SaveLearn
Green's function treatment of Rydberg molecules with spinsThe determination of ultra-long-range molecular potential curves has been reformulated using the Coulomb Greens function to give a solution in terms of the roots of an analytical determinantal…Chris H. Greene, Matthew T. Eiles·Aug 4, 2023SaveLearn
Trap-integrated fluorescence detection based on silicon photomultipliers in a cryogenic Penning trapWe present a fluorescence-detection system for laser-cooled 9Be+ ions based on silicon photomultipliers (SiPM) operated at 4 K and integrated into our cryogenic 1.9 T multi-Penning-trap system. Our…Markus Wiesinger, Florian Stuhlmann, Matthew A. Bohman et al.·Aug 4, 2023SaveLearn
A high-resolution asymmetric von Hamos spectrometer for low-energy X-ray spectroscopy at the CRYRING@ESR electron coolerWe present research program and project for high-resolution wavelength-dispersive spectrometer dedicated to low-energy X-ray spectroscopy at the electron cooler of the CRYRING@ESR storage ring, which…P. Jagodziński, D. Banaś, M. Pajek et al.·Aug 4, 2023SaveLearn
Enhancing Divalent Optical Atomic Clocks with the 1S03P2 TransitionDivalent atoms and ions with a singlet S ground state and triplet P excited state form the basis of many high-precision optical atomic clocks. Along with the metastable 3P0 clock…Matthew A. Bohman, Sergey G. Porsev, David B. Hume et al.·Aug 3, 2023SaveLearn
Magnetic dipole transitions in the H2+ ionThe magnetic dipole transitions in the homonuclear molecular ion H2+ are obtained for a wide range of v and L, vibrational and total orbital momentum quantum numbers, respectively.…D. T. Aznabayev, A. K. Bekbaev, V. I. Korobov·Aug 3, 2023SaveLearn
Delbr\"uck scattering above the pair production threshold: Going beyond the Born approximationWe present a theoretical method to calculate Delbr\"uck scattering amplitudes for photon energies above the electron-positron pair production threshold. The method is based on the application of the…J. Sommerfeldt, V. A. Yerokhin, A. Surzhykov·Aug 3, 2023SaveLearn
Lifetimes of Fine Levels of Li Atom for 20 < n < 31 by Extended Ritz FormulaLithium and lithium-like elements look like hydrogen atoms if their two electrons and the nucleus are considered a core around which a single electron is orbiting. The energy and radii expressions…Muhammad Saeed, Zaheer Uddin·Aug 2, 2023SaveLearn
Hyperfine transition induced by atomic motion above a paraffin-coated magnetic filmWe measured transitions between the hyperfine levels of the electronic ground state of potassium-39 atoms (transition frequency: 460 MHz) as the atoms moved through a periodic magneto-static field…Naota Sekiguchi, Hiroaki Usui, Atsushi Hatakeyama·Aug 2, 2023SaveLearn
Loading of a large Yb MOT on the 1S0-1P1 transitionWe present an experimental setup to laser cool and trap a large number of Ytterbium atoms. Our design uses an oven with an array of microtubes for efficient collimation of the atomic beam and we…Hector Letellier, Álvaro Mitchell Galvão de Melo, Anaïs Dorne et al.·Aug 1, 2023SaveLearn
Laser cooling and trapping of 224Ra+We report laser cooling and trapping of 224Ra+ ions. This was realized via two-step photoionization loading of radium into an ion trap. A robust source for 224Ra atoms, which have a…M. Fan, Roy A. Ready, H. Li et al.·Aug 1, 2023SaveLearn
Anomalous noise spectra in a spin-exchange-relaxation-free alkali-metal vaporWe perform spin-noise spectroscopy on an unpolarized 87Rb vapor in the spin-exchange-relaxation-free (SERF) regime. We observe noise spectral distributions that deviate strongly from…K. Mouloudakis, J. Kong, A. Sierant et al.·Jul 31, 2023SaveLearn
Simple Python tools for modelling few-level atom-light interactionsUnderstanding the interactions between atoms and light is at the heart of atomic physics. Being able to `experiment' with various system parameters, produce plots of the results and interpret these…Lucy Downes·Jul 31, 2023SaveLearn
Homonuclear ultracold elastic s-wave collisions of alkali atoms via multichannel quantum defect theoryMultichannel quantum defect theory (MQDT) provides a powerful toolkit for describing and understanding collisions of cold alkali atoms. Various MQDT approximations differ primarily in how they…Alyson Laskowski, Nirav Mehta·Jul 31, 2023SaveLearn