The role of dipole-forbidden autoionizing resonances in non-resonant one-color two-photon single ionization of N2We present an experimental and theoretical energy- and angle-resolved study on the photoionization dynamics of non-resonant one-color two-photon single valence ionization of neutral N2 molecules.…Kirk A. Larsen, Roger Y. Bello, Robert R. Lucchese et al.·Sep 18, 2020SaveLearn
Stern-Gerlach Interferometry with the Atom ChipIn this invited review in honor of 100 years since the Stern-Gerlach (SG) experiments, we describe a decade of SG interferometry on the atom chip. The SG effect has been a paradigm of quantum…Mark Keil, Shimon Machluf, Yair Margalit et al.·Sep 17, 2020SaveLearn
Effect of Stark shift on low-energy interference structure in strong-field ionizationAn improved quantum trajectory Monte Carlo method involving the Stark shift of the initial state, Coulomb potential, and multielectron polarization-induced dipole potential is used to revisit the…Weifeng Yang, Jie Li, Wenbin Jia et al.·Sep 17, 2020SaveLearn
Sensitive BEC magnetometry with optimized probingAn improved spatial magnetometer using a spinor Bose-Einstein condensate of 87Rb atoms is realized utilizing newly developed two-polarization phase contrast imaging. The optical shot noise is…Naota Sekiguchi, Aki Torii, Hiroyuki Toda et al.·Sep 16, 2020SaveLearn
Interferometric extraction of photoionization-path amplitudes and phases from time-dependent multiconfiguration self-consistent-field simulationsBichromatic extreme-ultraviolet pulses from a seeded free-electron laser enable us to measure photoelectron angular distribution (PAD) as a function of the relative phase between the different…Yuki Orimo, Oyunbileg Tugs, Takeshi Sato et al.·Sep 15, 2020SaveLearn
Sub-barrier pathways to Freeman resonancesThe problem of Freeman resonances [R. R. Freeman et al., Phys. Rev. Lett. 59, 1092 (1987)] when strong field ionization is enhanced due to the transient population of excited states…Michael Klaiber, Karen Z. Hatsagortsyan, Christoph H. Keitel·Sep 14, 2020SaveLearn
Photoelectron spectroscopy of laser-dressed atomic heliumPhotoelectron emission from excited states of laser-dressed atomic helium is analyzed with respect to laser intensity-dependent excitation energy shifts and angular distributions. In the two-color…Severin Meister, Aaron Bondy, Kirsten Schnorr et al.·Sep 14, 2020SaveLearn
Frustrated double ionization of atoms in circularly polarized laser fieldsWe theoretically study frustrated double ionization (FDI) of atoms subjected to intense circularly polarized laser pulses using a three-dimensional classical model. We find a novel "knee" structure…HuiPeng Kang, Shi Chen, Jing Chen et al.·Sep 14, 2020SaveLearn
Cascade Superfluorescence in Er:YLFWe report the analysis of paired photon pulses arising from two cascading transitions in continuously pumped Erbium-doped YLiF4 1% and 0.01% crystals at 1.6 K. The dependence of the pulse peak…Federico Chiossi, Caterina Braggio, Alen Khanbekyan et al.·Sep 13, 2020SaveLearn
On deformability of atoms---comparative study between atoms and atomic nucleiAtomic nuclei can be spontaneously deformed into non-spherical shapes as many-nucleon systems. We discuss to what extent a similar deformation takes place in many-electron systems. To this end, we…Tomoya Naito, Shimpei Endo, Kouichi Hagino et al.·Sep 13, 2020SaveLearn
Optical frequency ratio of a 171Yb+ single-ion clock and a 87Sr lattice clockWe report direct measurements of the frequency ratio of the 642 THz 2S1/2 (F=0)--2F7/2 (F=3) electric octupole transition in 171Yb+ and the 429 THz…Sören Dörscher, Nils Huntemann, Roman Schwarz et al.·Sep 11, 2020SaveLearn
Measuring the hyperfine splittings and deriving the hyperfine-interaction constants of Cesium 7D 5/2 excited stateThe measurement of Cesium (Cs) 7D5/2 excited state's hyperfine splitting intervals and hyperfine-interaction constants has been experimentally investigated based on ladder-type (852 nm + 698 nm)…Zerong Wang, Xiaokai Hou, Jiandong Bai et al.·Sep 11, 2020SaveLearn
Subradiance with saturated atoms: population enhancement of the long-lived statesDipole-dipole interactions are at the origin of long-lived collective atomic states, often called subradiant, which are explored for their potential use in novel photonic devices or in quantum…A. Cipris, N. A. Moreira, T. S. do Espirito Santo et al.·Sep 10, 2020SaveLearn
Canceling the cavity length induced phase noise in an optical ring cavity for phase shift measurement and spin squeezingWe demonstrate a new method of light phase shift measurement using a high-finesse optical ring cavity which exhibits reduced phase noise due to cavity length fluctuations. Two laser beams with a…Enlong Wang, Gunjan Verma, Jonathan N. Tinsley et al.·Sep 10, 2020SaveLearn
Finite temperature density functional theory investigation to the nonequilibrium transient warm dense state created by laser excitationWe present a finite-temperature density functional theory investigation of the nonequilibrium transient electronic structure of warm dense Li, Al, Cu, and Au created by laser excitation. Photons…Hengyu Zhang, Shen Zhang, Dongdong Kang et al.·Sep 9, 2020SaveLearn
Time dependence of quantum oscillator excitation by electromagnetic pulsesThe paper is devoted to the theoretical investigation of time dependences of quantum oscillator excitation by electromagnetic pulses for arbitrary values of field amplitude in the pulse. We consider…V. A. Astapenko, F. B. Rosmej, E. V. Sakhno·Sep 9, 2020SaveLearn
Interference in nonlinear Compton scattering using a Schr\"odinger's equation approachThe interference between Compton scattering and nonlinear Compton scattering from a two-color field in the X-ray regime is theoretically examined for bound electrons. The underlying phase shifts are…Akilesh Venkatesh, F. Robicheaux·Sep 8, 2020SaveLearn
On the molecular information revealed by photoelectron angular distributions of isotropic samplesWe propose an alternative approach to the description and analysis of photoelectron angular distributions (PADs) resulting from isotropic samples in the case of few-photon absorption via electric…Andres F. Ordonez, Olga Smirnova·Sep 8, 2020SaveLearn
Disentangling enantiosensitivity from dichroism using bichromatic fieldsWe discuss how tensorial observables, available in photoelectron angular distributions resulting from interaction between isotropic chiral samples and cross polarized ω-2ω bichromatic…Andres F. Ordonez, Olga Smirnova·Sep 8, 2020SaveLearn
Precision inertial sensing with quantum gasesQuantum sensors based on light-pulse atom interferometers allow for high-precision measurements of inertial and electromagnetic forces such as the accurate determination of fundamental constants as…Thomas Hensel, Sina Loriani, Christian Schubert et al.·Sep 8, 2020SaveLearn
High-energy-resolution measurement of ultracold atom-ion collisional cross sectionThe cross section of a given process fundamentally quantifies the probability for that given process to occur. In the quantum regime of low energies, the cross section can vary strongly with…Ruti Ben-shlomi, Meirav Pinkas, Ziv Meir et al.·Sep 7, 2020SaveLearn
Precision calculation of hyperfine structure and the Zemach radii of 6,7Li+ ionsThe hyperfine structures of the 2\,3\!S1 states of the 6Li+ and 7Li+ ions are investigated theoretically to extract the Zemach radii of the 6Li and 7Li nuclei by comparing with…Xiao-Qiu Qi, Pei-Pei Zhang, Zong-Chao Yan et al.·Sep 7, 2020SaveLearn
Hyperfine-mediated effects in a Lu+ optical clockWe consider hyperfine-mediated effects for clock transitions in 176Lu+. Mixing of fine structure levels due to the hyperfine interaction bring about modifications to Landé g-factors and the…Zhiqiang Zhang, K. J. Arnold, R. Kaewuam et al.·Sep 7, 2020SaveLearn
QED calculation of the 2p fine structure in Li-like ionsLarge-scale ab initio QED calculations are performed for the 2p3/2--2p1/2 fine-structure interval of Li-like ions with nuclear charges Z = 5\,--\,92. Improved theoretical…Vladimir A. Yerokhin, Mariusz Puchalski, Krzysztof Pachucki·Sep 5, 2020SaveLearn
Loss rates for high-n, 49 n 150, 5sns(3S1) Rydberg atoms excited in an 84Sr Bose-Einstein condensateMeasurements of the loss rates for strontium n3S1 Rydberg atoms excited in a dense BEC are presented for values of principal quantum number n in the range 49 n 150 and…S. K. Kanungo, J. D. Whalen, Y. Lu et al.·Sep 4, 2020SaveLearn