High-Precision Determination of Oxygen-Kα Transition Energy Excludes Incongruent Motion of Interstellar OxygenWe demonstrate a widely applicable technique to absolutely calibrate the energy scale of x-ray spectra with experimentally well-known and accurately calculable transitions of highly charged ions,…M. A. Leutenegger, S. Kühn, P. Micke et al.·Mar 30, 2020SaveLearn
Long-range Rydberg molecule Rb2: Two-electron R-matrix calculations at intermediate internuclear distancesThe adiabatic potential energy curves of Rb2 in the long-range Rydberg electronic states are calculated using the two-electron R-matrix method [M. Tarana, R. Čurík, Phys. Rev. A…Michal Tarana·Mar 30, 2020SaveLearn
Calculation of higher-order corrections to the light shift of the 5s2\, 1\!S0--5s5p\,3\!P0o clock transition in CdIn the recent work [A.~Yamaguchi et. al, Phys. Rev. Lett. 123, 113201 (2019)] Cd has been identified as an excellent candidate for a lattice clock. Here, we carried out computations needed for…S. G. Porsev, M. S. Safronova·Mar 30, 2020SaveLearn
Miniaturized optical frequency standard for next-generation portable optical clocksOptical frequency standards, lasers stabilized to atomic or molecular transitions, are widely used in length metrology and laser ranging, provide a backbone for optical communications and lie at the…Vincent Maurice, Zachary L. Newman, Susannah Dickerson et al.·Mar 30, 2020SaveLearn
Observation of nonlinear spin dynamics and squeezing in a BEC using dynamic decouplingWe study the evolution of a Bose-Einstein Condensate (BEC) in a two-state superposition due to inter-state interactions. Using a population imbalanced dynamic decoupling scheme, we measure…Hagai Edri, Boaz Raz, Gavriel Fleurov et al.·Mar 29, 2020SaveLearn
Vibrationally resolved NO dissociative excitation cross sections by electron impactA theoretical investigation of the dissociative excitation by electron impact on the NO molecule is presented, aiming to make up for the lack of data for this process in the literature. A full set of…V. Laporta, J. Tennyson, I. F. Schneider·Mar 29, 2020SaveLearn
Light ellipticity and polarization angle dependence of magnetic resonances in rubidium vapor using amplitude-modulated light: Theoretical and experimental investigationsWe report on experimental and theoretical investigations of the polarization dependence of magnetic resonance generated by synchronous optical pumping. Magnetic resonances with narrow linewidth are…Raghwinder Singh Grewal, Gour Pati, Renu Tripathi·Mar 28, 2020SaveLearn
High-accuracy inertial measurements with cold-atom sensorsThe research on cold-atom interferometers gathers a large community of about 50 groups worldwide both in the academic and now in the industrial sectors. The interest in this sub-field of quantum…Remi Geiger, Arnaud Landragin, Sébastien Merlet et al.·Mar 27, 2020SaveLearn
Electron correlation and short-range dynamics in attosecond angular streakingWe employ the R-matrix with time-dependence method to study attosecond angular streaking of F-. Using this negative ion, free of long-range Coulomb interactions, we elucidate the role of…G. S. J. Armstrong, D. D. A. Clarke, J. Benda et al.·Mar 27, 2020SaveLearn
Ab initio properties of the NaLi molecule in the a3Σ+ electronic stateUltracold polar and magnetic 23Na6Li molecules in the rovibrational ground state of the lowest triplet a3Σ+ electronic state have been recently produced. Here, we calculate the…Marcin Gronowski, Adam M. Koza, Michał Tomza·Mar 26, 2020SaveLearn
Optimization strategies for modulation transfer spectroscopy applied to laser stabilizationWe present a general analysis for determining the optimal modulation parameters for the modulation transfer spectroscopy scheme. The results are universally valid and can be applied to spectroscopy…Tilman Preuschoff, Malte Schlosser, Gerhard Birkl·Mar 26, 2020SaveLearn
Terahertz Emisssion from Quantum Interference of Electron TrajectoriesThe semiclassical electron trajectory, the so-called quantum orbits, is employed to explain the terahertz wave generation (TWG) in dual-color strong field, and the feasibility of the theory is…Yizhu Zhang, Kaixuan Zhang, Tian-Min Yan et al.·Mar 26, 2020SaveLearn
Actinide and lanthanide molecules to search for strong CP-violationThe existence of the fundamental CP-violating interactions inside the nucleus leads to the existence of the nuclear Schiff moment. The Schiff moment potential corresponds to the electric field…Leonid V. Skripnikov, Nikolai S. Mosyagin, Anatoly V. Titov et al.·Mar 24, 2020SaveLearn
Strong relativistic effect on (quasi)resonance electron-capture processes in non-symmetrical heavy ion-atom collisions(Quasi)resonance electron-capture processes in non-symmetrical (Z P 2Z T) heavy ion-atom collisions are studied employing a semiclassical atomic Dirac-Fock-Sturm orbital…Y. S. Kozhedub, A. I. Bondarev, X. Cai et al.·Mar 24, 2020SaveLearn
Instability threshold in a large balanced magneto-optical trapLarge clouds of cold atoms prepared in a magneto-optical trap can develop spatio-temporal instabilities when the frequency of the trapping lasers is brought close to the atomic resonance. This system…Marius Gaudesius, Robin Kaiser, Guillaume Labeyrie et al.·Mar 24, 2020SaveLearn
QED theory of the normal mass shift in few-electron atomsThe electron-electron interaction correction of first order in 1/Z to the one-electron part of the nuclear recoil effect on binding energies in atoms and ions is considered within the framework of…A. V. Malyshev, I. S. Anisimova, D. A. Glazov et al.·Mar 24, 2020SaveLearn
Imaging the onset of the resonance regime in low-energy NO-He collisionsAt low energies, the quantum wave-like nature of molecular interactions result in unique scattering behavior, ranging from the universal Wigner laws near zero Kelvin to the occurrence of scattering…Tim de Jongh, Matthieu Besemer, Quan Shuai et al.·Mar 24, 2020SaveLearn
Observation of Photoion Backward Emission in Photoionization of He and N2We experimentally investigate the effects of the linear photon momentum on the momentum distributions of photoions and photoelectrons generated in one-photon ionization in an energy range of 300 eV…Sven Grundmann, Max Kircher, Isabel Vela-Perez et al.·Mar 24, 2020SaveLearn
Clocking Auger ElectronsIntense X-ray free-electron lasers (XFELs) can rapidly excite matter, leaving it in inherently unstable states that decay on femtosecond timescales. As the relaxation occurs primarily via Auger…D. C. Haynes, M. Wurzer, A. Schletter et al.·Mar 23, 2020SaveLearn
Intensity Effect of Laser-assisted Double Ionization of Helium Atoms by Ultrashort XUV PulsesWe investigate the laser-assisted single XUV photon double ionization of ground state helium. By solving full six-dimensional time-dependent schrödinger equation, we study the correlation and…Fengzheng Zhu, Genliang Li, Aihua Liu·Mar 23, 2020SaveLearn
Robust stability of quantum interference realized by coexisting detuned and resonant STIRAPsInspired by a recent experiment [Phys. Rev. Letts. 122, 253201(2019)] that an unprecedented quantum interference was observed in the way of Stimulated Raman adiabatic passage (STIRAP) due to…Yichun Gao, Jianqin Xu, Jing Qian·Mar 23, 2020SaveLearn
VECSEL systems for quantum information processing with trapped beryllium ionsTwo vertical-external-cavity surface-emitting laser (VECSEL) systems producing ultraviolet (UV) radiation at 235 nm and 313 nm are demonstrated. The systems are suitable for quantum information…S. C. Burd, J. -P. Penttinen, P. -Y. Hou et al.·Mar 20, 2020SaveLearn
Influence of Laser Intensity Fluctuation on Single-Cesium Atom Trapping Lifetime in a 1064-nm Microscopic Optical TweezerAn optical tweezer composed of a strongly focused single-spatial-mode Gaussian beam of a red-detuned 1064-nm laser can confine a single-cesium (Cs) atom at the strongest point of the light intensity.…Rui Sun, Xin Wang, Kong Zhang et al.·Mar 18, 2020SaveLearn
Forming a single molecule by magnetoassociation in an optical tweezerWe demonstrate the formation of a single NaCs molecule in an optical tweezer by magnetoassociation through an s-wave Feshbach resonance at 864.11(5)G. Starting from single atoms cooled to their…Jessie T. Zhang, Yichao Yu, William B. Cairncross et al.·Mar 17, 2020SaveLearn
Features of Magnetically-induced atomic transitions of Rb D1 line studied by Doppler-free method based on the second derivative of the absorption spectraWe show that the Second Derivative (SD) technique of the absorption spectra of Rb atomic vapours confined in a nanocell with a thickness = λ/2=398 nm allows to achieve close to Doppler-free…Armen Sargsyan, Arevik Amiryan, Emmanuel Klinger et al.·Mar 17, 2020SaveLearn