Ramsey interferometry with arbitrary coherent-population-trapping pulse sequenceCoherent population trapping (CPT) is a multi-level quantum coherence phenomenon of promising applications in atomic clocks and magnetometers. Particularly, multi-pulse CPT-Ramsey interferometry is a…Ruihuan Fang, Chengyin Han, Bo Lu et al.·Mar 13, 2023SaveLearn
Long-range temperature-controlled transport of ultra-cold atoms with an accelerated latticeWe report our method for transporting ultracold atoms over macroscopic distances and trapping them back in a vertical mixed trap, consisting of the superposition of a vertical lattice and a…Luc Absil, Yann Balland, Franck Pereira dos Santos·Mar 13, 2023SaveLearn
Novel spin-precession method for sensitive EDM searchesWe demonstrate a spin-precession method to observe and analyze multi-level coherence between all hyperfine levels in the X 2+,N=0 ground state of barium monofluoride (138Ba19F).…A. Boeschoten, V. R. Marshall, T. B. Meijknecht et al.·Mar 11, 2023SaveLearn
Caustic effects on the high-order harmonic generation in grapheneWe employ the two-band density-matrix equations and time-dependent density functional theory to calculate high-order harmonic generation (HOHG) in graphene under a femtosecond laser irradiation. Our…Fulong Dong, Qinzhi Xia, Jie Liu·Mar 11, 2023SaveLearn
Observation of Rydberg blockade due to the charge-dipole interaction between an atom and a polar moleculeWe demonstrate Rydberg blockade due to the charge-dipole interaction between a single Rb atom and a single RbCs molecule confined in optical tweezers. The molecule is formed by magnetoassociation of…Alexander Guttridge, Daniel K. Ruttley, Archie C. Baldock et al.·Mar 10, 2023SaveLearn
Deep Laser Cooling of Thulium Atoms to Sub-μK Temperatures in Magneto-Optical TrapDeep laser cooling of atoms, ions, and molecules facilitates the study of fundamental physics as well as applied research. In this work, we report on the narrow-line laser cooling of thulium atoms at…Daniil Provorchenko, Dmitry Tregubov, Denis Mishin et al.·Mar 10, 2023SaveLearn
The multiplexed light storage of Orbital Angular Momentum based on atomic ensemblesThe improvement of the multi-mode capability of quantum memory can further improve the utilization efficiency of the quantum memory and reduce the requirement of quantum communication for storage…Xin Yang, Hong Chang, Jinwen Wang et al.·Mar 10, 2023SaveLearn
Observation of mHz-level cooperative Lamb shifts in an optical atomic clockWe report on the direct observation of resonant electric dipole-dipole interactions in a cubic array of atoms in the many-excitation limit. The interactions, mediated by single-atom couplings to the…Ross B. Hutson, William R. Milner, Lingfeng Yan et al.·Mar 9, 2023SaveLearn
Bayesian optimization of Bose-Einstein condensation via evaporative cooling modelTo achieve Bose-Einstein condensation, one may implement evaporative cooling by dynamically regulating the power of laser beams forming the optical dipole trap. We propose and experimentally…Jihao Ma, Ruihuan Fang, Chengyin Han et al.·Mar 9, 2023SaveLearn
A two-dimensional magneto-optical trap of dysprosium atoms as a compact source for efficient loading of a narrow-line three-dimensional magneto-optical trapWe report on a scheme for loading dysprosium atoms into a narrow-line three-dimensional magneto-optical trap (3D MOT). Our innovative approach replaces the conventional Zeeman slower with a 2D MOT…Shuwei Jin, Jianshun Gao, Karthik Chandrashekara et al.·Mar 9, 2023SaveLearn
Diatomic molecule in a strong infrared laser field: level-shifts and bond-length change due to laser-dressed Morse potentialWe present a general mathematical procedure to handle interactions described by a Morse potential in the presence of a strong harmonic excitation. We account for permanent and field-induced terms and…Sándor Varró, Szabolcs Hack, Gábor Paragi et al.·Mar 8, 2023SaveLearn
Trap-induced ac Zeeman shift of the thorium-229 nuclear clock frequencyWe examine the effect of a parasitic rf magnetic field, attributed to ion trapping, on the highly anticipated nuclear clock based on 229Th3+ [C. J. Campbell et al., Phys. Rev. Lett. 108,…K. Beloy·Mar 8, 2023SaveLearn
Laser-assisted photoionization: beyond the dipole approximationWe present a theoretical study of atomic laser-assisted photoionization emission (LAPE) beyond the dipole approximation. By considering the non-relativistic non-dipole strong-field approximation…Renata Della Picca, Juan Martín Randazzo, Sebastián David López et al.·Mar 8, 2023SaveLearn
Precision Measurement of M1 Optical Clock Transition in Ni12+Highly charged ions (HCIs) have drawn significant interest in quantum metrology and in search for new physics. Among these, Ni12+ is considered as one of the most promising candidates for the next…Shaolong Chen, Zhiqiang Zhou, Jiguang Li et al.·Mar 8, 2023SaveLearn
High-precision solution of the Dirac Equation for the hydrogen molecular ion using a basis-set expansionThe Dirac equation for H2+ is solved numerically by expansion in a basis set of two-center exponential functions, using different kinetic balance schemes. Very high precision (27-32 digits) is…Hugo D. Nogueira, Jean-Philippe Karr·Mar 8, 2023SaveLearn
A sensitive and stable atomic vector magnetometer for weak field detections using double orthogonal multipass cavitiesThis paper presents a compact low-temperature atomic vector magnetometer for weak field measurements, using an atomic cell containing two orthogonal multipass cavities. At the working temperature of…Siqi Liu, Qianqian Yu, Hao Zhou et al.·Mar 8, 2023SaveLearn
Quantifying Atomic Structural Disorder Using Procrustes Shape AnalysisIn this study, we added vacancies adjacent to a Si/Ge interface to create a disordered structure. The structure was then relaxed using various strategies. We applied Procrustes shape analysis for…Jinchen Han, Henry T. Aller, Alan J. H. McGaughey·Mar 7, 2023SaveLearn
Tuning of Efimov states in non-integer dimensionsThe purpose of this paper is to show that, by combining Feshbach resonances with external confining potentials, the energy scale factor of neighboring Efimov states can be tremendously reduced. The…E. Garrido, A. S. Jensen·Mar 7, 2023SaveLearn
Precision theoretical determination of electric-dipole matrix elements in atomic cesiumWe compute the reduced electric-dipole matrix elements nS1/2||D||n'PJ with n=6,7 and n'=6,7,…,12 in cesium using the most complete to date ab initio relativistic…H. B. Tran Tan, A. Derevianko·Mar 7, 2023SaveLearn
Direct measurement of high-lying vibrational repumping transitions for molecular laser coolingMolecular laser cooling and trapping requires addressing all spontaneous decays to excited vibrational states that occur at the 10-4 - 10-5 level, which is accomplished by driving…Nickolas H. Pilgram, Arian Jadbabaie, Chandler J. Conn et al.·Mar 6, 2023SaveLearn
Dynamics of twisted electron impact ionization of CH4 and NH3 moleculeElectron vortex beams (EVB, also known as twisted electron beams) possess an intrinsic orbital angular momentum (OAM) with respect to their propagation direction. This intrinsic OAM represents a new…Nikita Dhankhar, Neha, R. Choubisa·Mar 6, 2023SaveLearn
Controlling Magnetic and Electric Nondipole Effects with Synthesized Two Perpendicularly Propagating Laser FieldsNondipole effects are ubiquitous and crucial in light-matter interaction. However, they are too weak to be directly observed. In strong-field physics, motion of electrons is mainly confined in…Yankun Dou, Yiqi Fang, Peipei Ge et al.·Mar 4, 2023SaveLearn
Electron-positron pair creation in the superposition of two oscillating electric field pulses with largely different frequency, duration and relative positioningProduction of electron-positron pairs in two oscillating strong electric field pulses with largely different frequencies and durations is considered. In a first scenario, the influence of a…N. Folkerts, J. Putzer, S. Villalba-Chávez et al.·Mar 4, 2023SaveLearn
Many-Body Theory Calculations of Positron Scattering and Annihilation in H2, N2 and CH4The recently developed ab initio many-body theory of positron molecule binding [J. Hofierka et al., Nature, 606, 688 (2022)] is combined with the shifted pseudostates method [A. R. Swann and G. F.…C. M. Rawlins, J. Hofierka, B. Cunningham et al.·Mar 3, 2023SaveLearn
On the path to ion-based pump-probe experiments: Generation of 18 picosecond keV Ne+ ion pulses from a cooled supersonic gas beamThe dynamics triggered by the impact of an ion onto a solid surface has been explored mainly by theoretical modeling or computer simulation to date. Results indicate that the microscopic…L. Kalkhoff, A. Golombek, M. Schleberger et al.·Mar 2, 2023SaveLearn