Four-body singlet potential energy surface for reactions of calcium monofluorideA full six-dimensional Born-Oppenheimer singlet potential energy surface is constructed for the reaction CaF + CaF → CaF2 + Ca using a multireference configuration interaction (MRCI)…Dibyendu Sardar, Arthur Christianen, Hui Li et al.·Nov 10, 2022SaveLearn
Theoretical study of the I+ + I- mutual neutralization reactionWe have computed the cross sections of the mutual neutralization reaction between I+ and I- for a collision energy varying from 0.001 eV to 50 eV. These cross sections were obtained using…Sylvain Badin, Xiang Yuan, Pierre-Louis Bourgeois et al.·Nov 10, 2022SaveLearn
A fast approximation to supershell partition functionsA formula for supershell partition functions, which play a major role in the Super Transition Array approach to radiative-opacity calculations, is derived as a functional of the distribution of…Bran G. Wilson, Jean-Christophe Pain·Nov 10, 2022SaveLearn
Hydrogen 1s-2s transition frequency: Comparison of experiment and theoryUsing the Dirac equation, radiative corrections and finite nuclear size and mass corrections, we calculate the 1s-2s quantum transition frequency f1s,2s of hydrogen and its uncertainty due…Igor Kuzmenko, Tetyana Kuzmenko, Y. Avishai et al.·Nov 10, 2022SaveLearn
Ion optical clocks with three electronic statesOptical clocks are the apotheosis of precision measurement, but they require frequent maintenance by scientists. The supporting laser systems are a particularly demanding component of these…C. A. Holliman, M. Fan, A. M. Jayich·Nov 10, 2022SaveLearn
Trap-loss spectroscopy of Rydberg states in ytterbiumWe present an experimental study of the Rydberg 1S0- and 1P1- series of ytterbium for principal quantum numbers in the range of n=70 to 90. The study is performed using trap loss…Christian Halter, Alexander Miethke, Christian Sillus et al.·Nov 9, 2022SaveLearn
The role of Coulomb anti-blockade in the photoassociation of long-range Rydberg moleculesWe present a new mechanism contributing to the detection of photoassociated long-range Rydberg molecules via pulsed-field ionization: ionic products, created by the decay of a long-range Rydberg…Michael Peper, Martin Trautmann, Johannes Deiglmayr·Nov 9, 2022SaveLearn
Absolute frequency measurement of the 87Sr optical lattice clock at NTSC using International Atomic TimeWe report the absolute frequency measurement of the 5s2 1S0-5s5p 3P0 transition in 87Sr optical lattice clock (Sr1) at National Time Service Center (NTSC). Its systematic frequency shifts are…Xiaotong Lu, Feng Guo, Yebing Wang et al.·Nov 8, 2022SaveLearn
State-Insensitive Trapping of Alkaline-Earth Atoms in a Nanofiber-Based Optical Dipole TrapNeutral atoms trapped in the evanescent optical potentials of nanotapered optical fibers are a promising platform for developing quantum technologies and exploring fundamental science, such as…K. Ton, G. Kestler, D. Filin et al.·Nov 8, 2022SaveLearn
Numerical solution to the time-dependent Gross-Pitaevskii equationIn this work we employ the split-step technique combined with a Legendre pseudospectral representation to solve various time-dependent Gross-Pitaevskii equations (GPE). Our findings based on the…Tsogbayar Tsednee, Banzragch Tsednee, Tsookhuu Khinayat·Nov 8, 2022SaveLearn
Energy-scaling of the product state distribution for three-body recombination of ultracold atomsThree-body recombination is a chemical reaction where the collision of three atoms leads to the formation of a diatomic molecule. In the ultracold regime it is expected that the production rate of a…Shinsuke Haze, José P. D'Incao, Dominik Dorer et al.·Nov 7, 2022SaveLearn
Modelling of transient interference phenomena in collinear laser spectroscopyCollinear laser spectroscopy of fast atomic beams has been established as one of the main tools to perform precision experiments with atoms containing short-lived nuclei. Although highly sensitive,…Jovan Jovanovic, Ronald Fernando Garcia Ruiz·Nov 7, 2022SaveLearn
Classical-trajectory time-dependent mean-field theory for ion-molecule collision problemsA mean-field model to describe electron transfer processes in ion-molecule collisions at the =0 level is presented and applied to collisions involving water and ammonia molecules. Multicenter…Alba Jorge, Marko Horbatsch, Tom Kirchner·Nov 5, 2022SaveLearn
Improved ionization potential of calcium using frequency-comb based Rydberg spectroscopyWe report new frequency-comb-based measurements of Ca Rydberg energy levels. Counter-propagating laser beams at 390 nm and 423 nm excite Ca atoms from the 4s2~1S0 ground state to…Chanhyun Pak, Matthew J. Schlitters, Scott D. Bergeson·Nov 4, 2022SaveLearn
The 1S0-3P2 magnetic quadrupole transition in neutral strontiumWe present a detailed investigation of the ultranarrow magnetic-quadrupole 1S0-3P2 transition in neutral strontium and show how it can be made accessible for quantum…J. Trautmann, D. Yankelev, V. Klüsener et al.·Nov 4, 2022SaveLearn
Be optical lattice clocks with the fractional Stark shift up to the level of 10-19The energy levels and electric dipole (E1) matrix elements of the ground state and low-lying excited states of Be atoms are calculated using the relativistic configuration interaction plus core…Lei Wu, Xia Wang, Ting Wang et al.·Nov 4, 2022SaveLearn
T,P-odd effects in the LuOH+ cationThe LuOH+ cation is a promising system to search for manifestations of time reversal and spatial parity violation effects. Such effects in LuOH+ induced by the electron electric dipole moment…Daniel E. Maison, Leonid V. Skripnikov, Gleb Penyazkov et al.·Nov 3, 2022SaveLearn
Experimental fingerprint of the electron's longitudinal momentum at the tunnel exit in strong field ionizationWe present experimental data on the strong field tunnel ionization of argon in a counter-rotating two-color (CRTC) laser field. We find that the initial momentum component along the tunneling…A. Geyer, D. Trabert, M. Hofmann et al.·Nov 3, 2022SaveLearn
CARIOQA: Definition of a Quantum Pathfinder MissionA strong potential gain for space applications is expected from the anticipated performances of inertial sensors based on cold atom interferometry (CAI) that measure the acceleration of freely…T. Lévèque, C. Fallet, J. Lefebve et al.·Nov 2, 2022SaveLearn
Transfer learning, alternative approaches, and visualization of a convolutional neural network for retrieval of the internuclear distance in a molecule from photoelectron momentum distributionsWe investigate the application of deep learning to the retrieval of the internuclear distance in the two-dimensional H2+ molecule from the momentum distribution of photoelectrons produced by…N. I. Shvetsov-Shilovski, M. Lein·Nov 2, 2022SaveLearn
Unified treatment of resonant and non-resonant mechanisms in dissociative recombination: benchmark study of CH+The theoretical approach developed here treats uniformly the direct and indirect mechanisms of dissociative recombination (DR) in a diatomic ion. The present theory is based on electron scattering…Joshua Forer, Dávid Hvizdoš, Xianwu Jiang et al.·Nov 2, 2022SaveLearn
Signs in isotope shifts: a perennial headacheSigns of the different contributions to the isotope shift of an atomic line are discussed in details to clarify some confusing differences between the electronic parameters calculated with RIS…Michel Godefroid, Jörgen Ekman, Per Jönsson·Nov 2, 2022SaveLearn
Single atom in a superoscillatory optical trapOptical tweezers have become essential tools to manipulate atoms or molecules at a single particle level. However, using standard diffracted-limited optical systems, the transverse size of the trap…Hamim Mahmud Rivy, Syed A. Aljunid, Emmanuel Lassalle et al.·Nov 1, 2022SaveLearn
Continuous collective strong coupling between atoms and a high finesse optical cavityWe demonstrate continuous loading of strontium atoms into a high finesse ring cavity and observe continuous strong collective coupling in the form of a vacuum Rabi splitting between the atoms and the…Julia R. K. Cline, Vera M. Schäfer, Zhijing Niu et al.·Oct 31, 2022SaveLearn
Measuring the nuclear magnetic quadrupole moment in heavy polar moleculesTheories that extend the Standard Model of particle physics often introduce new interactions that violate charge-parity (CP) symmetry. CP-violating effects within an atomic nucleus can be probed by…C. J. Ho, J. Lim, B. E. Sauer et al.·Oct 31, 2022SaveLearn