Computer-predicted ionization energy of carbon within 1 cm-1 of the best experimentWe show that we can predict the first ionization energy of the carbon atom to within 0.872 cm-1 of the experimental value. This is an improvement of more than a factor of 6.5 over the preceding…Nike Dattani, Giovanni LiManni, David Feller et al.·Jun 24, 2020SaveLearn
Strongly confined atomic localization by Rydberg coherent population trappingIn this letter we investigate the possibility to attain strongly confined atomic localization using interacting Rydberg atoms in a Coherent Population Trapping (CPT) ladder configuration, where a…Teodora Kirova, Ning Jia, Seyyed Hossein Asadpour et al.·Jun 23, 2020SaveLearn
Polarization control of high-harmonic generation via the spin-orbit interactionWe observe the generation of high harmonics in the plane perpendicular to the driving laser polarization and show that these are driven by the spin-orbit interaction. Using R-Matrix with…Jack Wragg, Daniel D. A. Clarke, Gregory S. J. Armstrong et al.·Jun 22, 2020SaveLearn
Measurement and simulation of atomic motion in nanoscale optical trapping potentialsAtoms trapped in the evanescent field around a nanofiber experience strong coupling to the light guided in the fiber mode. However, due to the intrinsically strong positional dependence of the…Signe B. Markussen, Jürgen Appel, Christoffer Østfeldt et al.·Jun 22, 2020SaveLearn
Laser stabilisation to neutral Yb in a discharge with polarization enhanced frequency modulation spectroscopyIsotope selective optical excitation of atoms is important for experiments with neutral atoms, metrology, and work with trapped ions, including quantum information processing. Polarization-enhanced…Valdis Blums, Jordan Scarabel, Kenji Shimizu et al.·Jun 22, 2020SaveLearn
Two-photon Doppler-free ultraviolet laser spectroscopy on sulphur atomsThe 3p4 3PJ - 3p34p 3PJ transition in the sulphur atom is investigated in a precision two-photon excitation scheme under Doppler-free and collision-free circumstances…K. -F. Lai, E. J. Salumbides, W. Ubachs·Jun 19, 2020SaveLearn
Toward a quantum-enhanced strontium optical lattice clock at INRIMThe new strontium atomic clock at INRIM seeks to establish a new frontier in quantum measurement by joining state-of-the-art optical lattice clocks and the quantized electromagnetic field provided by…Marco G. Tarallo·Jun 18, 2020SaveLearn
Substantially enhanced deuteron-triton fusion probabilities in intense low-frequency laser fieldsDeuteron-triton (DT) fusion is the primary fusion reaction used in controlled fusion research, mainly for its relatively high reaction cross sections compared to other fusion options. Even so, to…Xu Wang·Jun 17, 2020SaveLearn
Rubidium Isotope Shift Measurement using Noisy LasersData students collect from the typical advanced undergraduate laboratory on Saturated Absorption Spectroscopy (SAS) of rubidium can be used to measure the isotope shift and thus leads to an estimate…Theodore J. Bucci, Jonathan Feigert, Michael Crescimanno et al.·Jun 16, 2020SaveLearn
Ellipticity-dependent sequential over-barrier ionization of cold rubidiumWe perform high-resolution measurements of momentum distribution on Rbn+ recoil ions up to charge state n=4, where laser-cooled rubidium atoms are ionized by femtosecond elliptically polarized…Junyang Yuan, Shiwei Liu, Xincheng Wang et al.·Jun 16, 2020SaveLearn
Nonadiabatic effects in the double ionization of atoms driven by a circularly polarized laser pulseWe study the double ionization of atoms subjected to circularly polarized (CP) laser pulses. We analyze two fundamental ionization processes: the sequential (SDI) and non-sequential (NSDI) double…J. Dubois, C. Chandre, T. Uzer·Jun 16, 2020SaveLearn
Helium line emissivities in the solar coronaWe present new collisional-radiative models (CRMs) for helium in the quiescent solar corona, and predict the emissivities of the He and He+ lines to be observed by DKIST, Solar Orbiter, and…G. Del Zanna, P. J. Storey, N. R. Badnell et al.·Jun 16, 2020SaveLearn
Tailoring multi-loop atom interferometers with adjustable momentum transferMulti-loop matter-wave interferometers are essential in quantum sensing to measure the derivatives of physical quantities in time or space. Because multi-loop interferometers require multiple…L. A. Sidorenkov, R. Gautier, M. Altorio et al.·Jun 15, 2020SaveLearn
Self-energy screening effects in the g factor of Li-like ionsWe report an investigation of the self-energy screening effects for the g factor of the ground state of Li-like ions. The leading screening contribution of the relative order 1/Z is calculated to…V. A. Yerokhin, K. Pachucki, M. Puchalski et al.·Jun 15, 2020SaveLearn
Ramsey interferometry through coherent X2g+ - A2u - B2u+ coupling and population transfer in N+2 air laserThe laser-like coherent emission at 391nm from N2 gas irradiated by strong 800nm pump laser and weak 400nm seed laser is theoretically investigated. Recent experimental observations are well…Yu-Hung Kuan, Xiangxu Mu, Zhiming Miao et al.·Jun 15, 2020SaveLearn
Low-energy collisions between carbon atoms and oxygen molecules in a magnetic trapTrapping of atoms and molecules in electrostatic, magnetic and optical traps has enabled studying atomic and molecular interactions on a timescale of many seconds, allowing observations of ultra-cold…Michael Karpov, Martin Pitzer, Yair Segev et al.·Jun 15, 2020SaveLearn
Nearly nondestructive thermometry of labeled cold atoms and application to isotropic laser coolingWe have designed and implemented a straightforward method to deterministically measure the temperature of the selected segment of a cold atom ensemble, and we have also developed an upgrade in the…Xin Wang, Yuan Sun, Hua-Dong Cheng et al.·Jun 15, 2020SaveLearn
Using circular dichroism to control energy transfer in multi-photon ionizationChirality causes symmetry breaks in a large variety of natural phenomena ranging from particle physics to biochemistry. We investigate one of the simplest conceivable chiral systems, a laser-excited,…A. H. N. C. De Silva, D. Atri-Schuller, S. Dubey et al.·Jun 12, 2020SaveLearn
Population kinetics of many-electron atoms in ionizing plasmas studied using a continuous collisional radiative modelCollisional--radiative (CR) models based on ab initio atomic structure calculation have been utilized over 20 years to analyze many-electron atomic and ionic spectra. Although the population…Akira Nishio, Julian C. Berengut, Masahiro Hasuo et al.·Jun 11, 2020SaveLearn
Photoionization of chiral molecules by counter-rotating bicircular laser fields: a chiral attoclockMeasuring and controlling the ionization dynamics by intense laser fields has recently led to important breakthroughs, from the investigation of tunneling time delays to attosecond molecular imaging…Samuel Beaulieu, Sylvain Larroque, Antoine Comby et al.·Jun 11, 2020SaveLearn
Frequency measurements of transitions from the 23\!P2 state to the 51\!D2, 53\!S1, and 53\!D states in ultracold heliumWe perform laser absorption spectroscopy with ultracold 4He atoms to measure the energy intervals between the 23\! P2 level and five levels in the n = 5 manifold. The laser light perturbs…Jacob A. Ross, Kieran F. Thomas, Bryce M. Henson et al.·Jun 11, 2020SaveLearn
Hyperfine components of all rovibrational quadrupole transitions in the H2 and D2 moleculesWe report results of a theoretical investigation of hyperfine interactions in two homonuclear isotopologues of the hydrogen molecule: H2 and D2. We present a set of hyperfine coupling…Hubert Jóźwiak, Hubert Cybulski, Piotr Wcisło·Jun 10, 2020SaveLearn
QED calculation of ionization energies of 1snd states in heliumQuantum electrodynamical (QED) calculations of ionization energies of the 1snd\,D states are performed for the helium atom. We reproduce the previously known relativistic and QED effects up to…Vladimir A. Yerokhin, Vojtěch Patkóš, Mariusz Puchalski et al.·Jun 9, 2020SaveLearn
Confinement of an alkaline-earth element in a grating magneto-optical trapWe demonstrate a compact magneto-optical trap (MOT) of alkaline-earth atoms using a nanofabricated diffraction grating chip. A single input laser beam, resonant with the broad 1S$0\,→…A. Sitaram, P. K. Elgee, G. K. Campbell et al.·Jun 9, 2020SaveLearn
Cavity probe for real-time detection of atom dynamics in an optical latticeWe propose and demonstrate real-time sub-wavelength cavity QED measurements of the spatial distribution of atoms in an optical lattice. Atoms initially confined in one "trap" standing wave of…Robert D. Niederriter, Chandler Schlupf, Paul Hamilton·Jun 8, 2020SaveLearn