High repetition rate sub ns-electron pulses from Resonant Pulsed Rydberg Field IonizationUsing Resonant Pulsed Rydberg Field-ionization (RPRFI) technique, we generate low-energy electron bunches at high repetition rates. By combining continuous-wave laser excitation with a pulsed…R. Hahn, D. Comparat·Aug 29, 2023SaveLearn
A pulsed optically pumped Rb clock with a frequency stability below 10-15We present the frequency stability performances of a vapor cell Rb clock based on the pulsed optically pumping (POP) technique. The clock has been developed in the frame of a collaboration between…Michele Gozzelino, Salvatore Micalizio, Claudio E. Calosso et al.·Aug 29, 2023SaveLearn
Penning-trap eigenfrequency measurements with optical radiofrequency detectorsWe use an electric-dipole laser-driven transition to precisely measure the cyclotron-frequency ratios of the pairs 42Ca+-40Ca+, 44Ca+-40Ca+ and…Joaquín Berrocal, Alejandro Hernández, Íñigo Arrazola et al.·Aug 28, 2023SaveLearn
Pinning down electron correlations in RaF via spectroscopy of excited states and high-accuracy relativistic quantum chemistryWe report the spectroscopy of the 14 lowest excited electronic states in the radioactive molecule radium monofluoride (RaF). The observed excitation energies are compared with fully relativistic…M. Athanasakis-Kaklamanakis, S. G. Wilkins, L. V. Skripnikov et al.·Aug 28, 2023SaveLearn
Laser Scheme for Doppler Cooling of the Hydroxyl Cation (OH+)We report on a cycling scheme for Doppler cooling of trapped OH+ ions using transitions between the electronic ground state X3- and the first excited triplet state A3. We have…Niccolò Bigagli, Daniel W. Savin, Sebastian Will·Aug 28, 2023SaveLearn
Spectroscopically resolved resonant interatomic Coulombic decay in photoexcited large He nanodropletsInteratomic Coulombic decay (ICD) processes play a crucial role in weakly bound complexes exposed to intense or high-energy radiation. Using large helium nanodroplets, we demonstrate that ICD is…L. Ben Ltaief, K. Sishodia, R. Richter et al.·Aug 28, 2023SaveLearn
Developing a simulation tool to investigate a novel trapped two-state Bose-Einstein condensate Ramsey interferometer driven by dipole oscillations and gravitational sagWe propose and explore the feasibility of a novel Ramsey interferometer created by a trapped two-state Bose-Einstein condensate (BEC) driven by dipole oscillations and gravitational sag. The BEC is…Anushka Thenuwara, Andrei Sidorov·Aug 27, 2023SaveLearn
Fitting for the energy levels of hydrogenAtomic hydrogen energy levels calculated to high precision are required to assist experimental researchers working on spectroscopy in the pursuit of testing quantum electrodynamics (QED) and probing…David M. Jacobs, Marko Horbatsch·Aug 27, 2023SaveLearn
Laser-assisted (e,2e) study with twisted electron beam on H-atomWe study the laser-assisted twisted electron beam impact ionization of the hydrogen atom in coplanar asymmetric geometry. We develope the theoretical model in the first Born approximation. In the…Neha, Nikita Dhankhar, Raul Sheldon Pinto et al.·Aug 26, 2023SaveLearn
Laser Excitation of the 1S-2S Transition in Singly-Ionized HeliumPrecision laser spectroscopy in the extreme ultraviolet of the 1S-2S two-photon transition in singly-ionized helium is a promising route for tests of fundamental physics. We demonstrate laser…Elmer L. Gründeman, Vincent Barbé, Andrés Martínez de Velasco et al.·Aug 25, 2023SaveLearn
Inter-species spin-noise correlations in hot atomic vaporsWe report an experimental and theoretical study of spin noise correlations in a 87Rb-133Cs unpolarized alkali-metal vapor dominated by spin-exchange collisions. We observe strong…K. Mouloudakis, F. Vouzinas, A. Margaritakis et al.·Aug 24, 2023SaveLearn
Accurate numerical evaluation of systematics in the experiment for electron electric dipole moment measurement in HfF+Hyperfine structure of the ground rotational level of the metastable 31 electronic state of 180HfF+ ion is calculated at presence of variable external electric and magnetic fields.…Alexander N. Petrov·Aug 24, 2023SaveLearn
Optical Clocks at SeaDeployed optical clocks will improve positioning for navigational autonomy, provide remote time standards for geophysical monitoring and distributed coherent sensing, allow time synchronization of…Jonathan D. Roslund, Arman Cingöz, William D. Lunden et al.·Aug 23, 2023SaveLearn
Observation of quantum interference of optical transition pathways in Doppler-free two-photon spectroscopy and implications for precision measurementsDoppler-free two-photon spectroscopy is a standard technique for precision measurement of transition frequencies of dipole-forbidden transitions. The accuracy of such measurements depends critically…Bubai Rahaman, Sid C. Wright, Sourav Dutta·Aug 23, 2023SaveLearn
Feasibility of a trapped atom interferometer with accelerating optical trapsIn order to increase the measured phase of an atom interferometer and improve its sensitivity, researchers attempt to increase the enclosed space-time area using two methods: creating larger…Gayathrini Premawardhana, Jonathan Kunjummen, Sarthak Subhankar et al.·Aug 23, 2023SaveLearn
Simplified partial wave expansion of the Lamb shiftA method for calculating the self energy part of the Lamb shift is revisited. When the electron propagator in an external field is represented as an expansion in partial waves, the original method…J. Sapirstein, K. T. Cheng·Aug 22, 2023SaveLearn
Guided-Wave Sagnac Atom Interferometer with Large Area and Multiple OrbitsWe describe a matter-wave Sagnac interferometer using Bose condensed atoms confined in a time-orbiting potential trap. Compared to our previous implementation [Moan et al., Phys. Rev. Lett. 124,…M. Beydler, E. R. Moan, Z. Luo et al.·Aug 22, 2023SaveLearn
Ramsey interferometry in three-level and five-level systems of 87Rb Bose-Einstein condensatesOur work here presents the analytical expressions for a typical Ramsey interferometric sequence for a three- and a five-level system. The analytical expressions are derived starting from the first…Anushka Thenuwara, Andrei Sidorov·Aug 22, 2023SaveLearn
Formation of deeply bound polar molecules combining pump-dump pulses with infrared radiationWe consider the formation of cold ground-state polar molecules in a low vibrational level by laser fields. Starting from a pair of cold colliding atoms of dissimilar species, we propose a strategy…Emanuel F. de Lima·Aug 21, 2023SaveLearn
On scattering problem off the potential, decreasing as inverse square of distanceA solution of the scattering problem is obtained for the Schr\"odinger equation with the potential of induced dipole interaction, which decreases as the inverse square of the distance. Such a…V. A. Gradusov, S. L. Yakovlev·Aug 21, 2023SaveLearn
Effect of Rydberg-atom-based sensor performance on different Rydberg atom population at one atomic-vapor cellThe atomic-vapor cell is a vital component for Rydberg atomic microwave sensors, and impacts on overall capability of Rydberg sensor. However, the conventional analysis approach on effect of…Bo Wu, Qiang An, Jiawei Yao et al.·Aug 21, 2023SaveLearn
Analog simulation of high harmonic generation in atomsThe demanding experimental access to the ultrafast dynamics of materials challenges our understanding of their electronic response to applied strong laser fields. For this purpose, trapped ultracold…Javier Argüello-Luengo, Javier Rivera-Dean, Philipp Stammer et al.·Aug 20, 2023SaveLearn
High-precision Electric Dipole Polarizabilities of the Clock States in 133CsWe have calculated static and dynamic electric dipole (E1) polarizabilities (αF) of the hyperfine levels of the clock transition precisely in 133Cs. The scalar, vector, and tensor…A. Chakraborty, B. K. Sahoo·Aug 18, 2023SaveLearn
Optical stimulated-Raman sideband spectroscopy of a single 9Be+ ion in a Penning trapWe demonstrate optical sideband spectroscopy of a single 9Be+ ion in a cryogenic 5 Tesla Penning trap using two-photon stimulated-Raman transitions between the two Zeeman sublevels of the…J. M. Cornejo, J. Brombacher, J. -A. Coenders et al.·Aug 18, 2023SaveLearn
Continuous optical generation of microwave signals for fountain clocksFor the optical generation of ultrastable microwave signals for fountain clocks we developed a setup, which is based on a cavity stabilized laser and a commercial frequency comb. The robust system,…Burghard Lipphardt, Patrick Walkemeyer, Michael Kazda et al.·Aug 17, 2023SaveLearn