Fresh study of simultaneous electron-photon excitation of a Hydrogen atom based on Bethe-Born approximationThe advent of powerful laser sources has made it possible to observe a relatively large cross section of the excited state of Hydrogen atom. This is due to the effect of joint collisions of a…Behnam Nikoobakht·Apr 22, 2023SaveLearn
Nuclear T-violation search using octupole-deformed nuclei in a crystalPrecision measurements with atoms and molecules can search for subtle violations of time-reversal symmetry (T) in nuclei, and thereby probe a variety of new physics models. We present a detailed…Harish D. Ramachandran, Amar C. Vutha·Apr 20, 2023SaveLearn
A pump-probe experiment in cw-mode on ionization of Rydberg atomsRydberg atoms are in the focus of intense research due to the peculiar properties which make them interesting candidates for quantum optics and quantum information applications. In this work we study…K. L. Romans, A. H. N. C. De Silva, B. P. Acharya et al.·Apr 19, 2023SaveLearn
Electro-association of ultracold dipolar molecules into tetramer field-linked statesThe presence of electric or microwave fields can modify the long-range forces between ultracold dipolar molecules in such a way as to engineer weakly-bound states of molecule pairs. These so-called…Goulven Quéméner, John L. Bohn, James F. E. Croft·Apr 19, 2023SaveLearn
K-shell ionization of heavy hydrogen-like ionsA theoretical study of the K-shell ionization of hydrogen-like ions, colliding with bare nuclei, is performed within the framework of the time-dependent Dirac equation. Special emphasis is placed on…O. Novak, R. Kholodov, A. Surzhykov et al.·Apr 19, 2023SaveLearn
Relativistic effects in ionization of heavy hydrogen-like ions by short X-ray pulsesThe probability of photoionization of a heavy hydrogen like ion is calculated within the relativistic perturbation theory. The Coulomb potential of a heavy nucleus is taken into account accurately by…O. Novak, M. Diachenko, R. Kholodov·Apr 19, 2023SaveLearn
Ionization in a laser assisted ion-ion collisionThe ionization of a hydrogen-like heavy ion by impact of a charged projectile under simultaneous irradiation by a short laser pulse is investigated within the non-perturbative approach, based on…O. Novak, R. Kholodov, A. N. Artemyev et al.·Apr 19, 2023SaveLearn
Microwave electrometry with Rydberg atoms in a vapor cell using microwave amplitude modulationWe have theoretically and experimentally studied the dispersive signal of the Rydberg atomic electromagnetically induced transparency (EIT) - Autler-Townes (AT) splitting spectra obtained using…Jianhai Hao, Fengdong Jia, Yue Cui et al.·Apr 18, 2023SaveLearn
Calculating the many-potential vacuum polarization density of the Dirac equation in the finite-basis approximationIn this work, we propose an efficient and accurate computational method to evaluate the many-potential α(Zα)n3 vacuum polarization density of hydrogen-like atoms within…Maen Salman, Trond Saue·Apr 18, 2023SaveLearn
Periodic super-radiance in Er:YSO crystalWe observed periodic optical pulses from an Er:YSO crystal during irradiating with an continuous-wave excitation laser. We refer to this new phenomenon as "periodic super-radiance". This periodicity…Hideaki Hara, Junseok Han, Yasutaka Imai et al.·Apr 18, 2023SaveLearn
Effective electric field: quantifying the sensitivity of searches for new P,T-odd physics with EuCl3·6H2OLaboratory-scale precision experiments are a promising approach to searching for physics beyond the standard model. Non-centrosymmetric solids offer favorable statistical sensitivity for efforts that…Alexander O. Sushkov, Oleg P. Sushkov, Alexander Yaresko·Apr 17, 2023SaveLearn
Laser Systems for High Fidelity Control and Entanglement of Neutral Atomic QubitsWe present new photonics and electronics packages recently developed by M Squared Lasers specifically tailored for scalable neutral atom quantum computing; a high power 1064 nm system for scalable…C. J. Picken, I. Despard, A. Kelly et al.·Apr 17, 2023SaveLearn
Microwave shielding of bosonic NaRb moleculesRecent years have witnessed tremendous progresses in creating and manipulating ground-state ultracold polar molecules. However, the two-body loss regardless of the chemical reactivities is still a…Junyu Lin, Guanghua Chen, Mucan Jin et al.·Apr 17, 2023SaveLearn
Nondipole strong-field approximation for above threshold ionization in few-cycle pulseThe ionization of atoms and molecules by strong laser fields has been studied extensively, both theoretically and experimentally. The strong-field approximation (SFA) allows for the analytical…Danish Furekh Dar, Björn Minneker, Stephan Fritzsche·Apr 17, 2023SaveLearn
Quantum defects of nFJ levels of Cs Rydberg atomsWe present precise measurements of the quantum defects of cesium nFJ Rydberg levels. We employ high-precision microwave spectroscopy of (n+2)D5/2→ nF5/2,7/2…Jingxu Bai, Yuechun Jiao, Rong Song et al.·Apr 17, 2023SaveLearn
Quantum Control of Atom-Ion Charge Exchange via Light-induced Conical IntersectionsConical intersections are crossing points or lines between two or more adiabatic electronic potential energy surfaces in the multi-dimensional coordinate space of colliding atoms and molecules.…Hui Li, Ming Li, Alexander Petrov et al.·Apr 15, 2023SaveLearn
Integration of a high finesse cryogenic build-up cavity with an ion trapWe report on the realization of a hemispherical optical cavity with a finesse of F = 13000 sustaining inter-cavity powers of 10 kW, which we operate in a closed-cycle cryostat vacuum system close to…Oliver Wipfli, Henry Fernandes Passagem, Christoph Fischer et al.·Apr 15, 2023SaveLearn
A Three-Photon Rydberg Atom-Based Radio Frequency Sensing Scheme with Narrow LinewidthWe demonstrate Rydberg atom-based radio frequency sensing with a colinear three-photon scheme in a room temperature cesium vapor cell that minimizes residual Doppler broadening of the probe laser…Stephanie M. Bohaichuk, Fabian Ripka, Vijin Venu et al.·Apr 14, 2023SaveLearn
Updated constraints on T,P-violating axionlike-particle-mediated electron-electron and electron-nucleus interactions from HfF+ experimentRecently, upper bounds on the static time-reversal (T) and spatial parity (P)-violating electron electric dipole moment (eEDM) and dimensionless constant characterizing the…Sergey D. Prosnyak, Daniel E. Maison, Leonid V. Skripnikov·Apr 14, 2023SaveLearn
The Lamb shift in muonic hydrogen and the electric rms radius of the protonThe "proton radius puzzle" is the 7-standard-deviations difference of the charge radius of the proton as determined from the Lamb shift in electronic hydrogen and elastic electron scattering off the…Thomas Walcher·Apr 14, 2023SaveLearn
Imaging molecular orbitals with laser-induced electron tunneling spectroscopyPhotoelectron spectroscopy in intense laser fields has proven to be a powerful tool for providing detailed insights into molecular structure. The ionizing molecular orbital, however, has not been…XuanYang Lai, RenPing Sun, ShaoGang Yu et al.·Apr 13, 2023SaveLearn
Coherent quantum beats: spectroscopy of energy differences masked by inhomogeneous broadeningPrecision spectroscopy of solid-state systems is challenging due to inhomogeneous broadening. We describe a technique -- coherent quantum beats -- that enables the measurement of small frequency…Harish D. Ramachandran, Julia E. Ford, Amar C. Vutha·Apr 12, 2023SaveLearn
Real-time buffer gas pressure tuning in a micro-machined vapor cellWe demonstrate a controllable depletion of the nitrogen buffer gas pressure in a micro-machined cesium (Cs) vapor cell from the dynamic heating of an alkali dispenser pill. When the alkali source is…S. Dyer, A. McWilliam, D. Hunter et al.·Apr 12, 2023SaveLearn
Proton Radius: A Puzzle or a Solution!?The proton radius puzzle is known as the discrepancy of the proton radius, obtained from muonic hydrogen spectroscopy (obtained as being roughly equal to 0.84fm), and the proton radius obtained from…Ulrich D. Jentschura·Apr 12, 2023SaveLearn
Femtosecond reduction of atomic scattering factors triggered by intense x-ray pulseX-ray diffraction of silicon irradiated with tightly focused femtosecond x-ray pulses (photon energy: 11.5 keV, pulse duration: 6 fs) was measured at various x-ray intensities up to…Ichiro Inoue, Jumpei Yamada, Konrad J. Kapcia et al.·Apr 12, 2023SaveLearn