Coherent scattering of an optically-modulated electron beam by atomsRecent technological advances allowed the coherent optical manipulation of high-energy electron wavepackets with attosecond precision. Here we theoretically investigate the collision of…Yuya Morimoto, Peter Hommelhoff, Lars Bojer Madsen·Jan 11, 2021SaveLearn
Improving Efficiency of Sympathetic Cooling in Atom-Ion and Atom-Atom Confined CollisionsWe propose a new way for sympathetic cooling of ions in an electromagnetic Paul trap: it implies the use for this purpose of cold buffer atoms in the region of atom-ion confinement-induced resonance…Vladimir S. Melezhik·Jan 10, 2021SaveLearn
Assembly of a rovibrational ground state molecule in an optical tweezerWe demonstrate the coherent creation of a single NaCs molecule in its rotational, vibrational, and electronic (rovibronic) ground state in an optical tweezer. Starting with a weakly bound Feshbach…William B. Cairncross, Jessie T. Zhang, Lewis R. B. Picard et al.·Jan 8, 2021SaveLearn
Blackbody Radiation Noise Broadening of Quantum SystemsPrecision measurements of quantum systems often seek to probe or must account for the interaction with blackbody radiation. Over the past several decades, much attention has been given to AC Stark…Eric B Norrgard, Stephen P Eckel, Christopher L Holloway et al.·Jan 8, 2021SaveLearn
Realizing Su-Schrieffer-Heeger topological edge states in Rydberg-atom synthetic dimensionsWe demonstrate a platform for synthetic dimensions based on coupled Rydberg levels in ultracold atoms, and we implement the single-particle Su-Schrieffer-Heeger (SSH) Hamiltonian. Rydberg levels are…S. K. Kanungo, J. D. Whalen, Y. Lu et al.·Jan 8, 2021SaveLearn
Depolarization of Spin-Polarized Hydrogen via Collisions with Chlorine Atoms at Ultrahigh DensityRecently, the production of ultrahigh-density (~1019cm-3) spin-polarized deuterium (SPD) atoms was demonstrated, from the photodissociation of deuterium iodide, but the upper density limit was…Alexandros K. Spiliotis, Michail Xygkis, Michail E. Koutrakis et al.·Jan 7, 2021SaveLearn
Photoionization of nS and nD Rydberg atoms of Rb and Cs from the near-infrared to the ultraviolet spectral regionWe present calculations of the photoionization (PI) cross sections of rubidium and cesium Rydberg atoms for light with wavelengths ranging from the infrared to the ultraviolet, using model potentials…Michael A. Viray, Eric Paradis, Georg Raithel·Jan 7, 2021SaveLearn
Determination of the dipole polarizability of the alkali-metal negative ionsWe present electric dipole polarizabilities (αd) of the alkali-metal negative ions, from H- to Fr-, by employing four-component relativistic many-body methods. Differences in the…B. K. Sahoo·Jan 6, 2021SaveLearn
Investigating properties of Cl- and Au- ions using relativistic many-body methodsWe investigate ground state properties of singly charged chlorine (Cl-) and gold (Au-) negative ions by employing four-component relativistic many-body methods. In our approach, we attach an…B. K. Sahoo·Jan 6, 2021SaveLearn
Collisions Between Ultracold Molecules and Atoms in a Magnetic TrapWe prepare mixtures of ultracold CaF molecules and Rb atoms in a magnetic trap and study their inelastic collisions. When the atoms are prepared in the spin-stretched state and the molecules in the…S. Jurgilas, A. Chakraborty, C. J. H. Rich et al.·Jan 5, 2021SaveLearn
Extended calculations of energy levels, radiative properties, and lifetimes for P-like Ge XVIIIUsing the multiconfiguration Dirac-Hartree-Fock (MCDHF) and the relativistic configuration interaction (RCI) methods, a consistent set of transition energies and radiative transition data for the…Kai Wanga, Xiao Han Zhang, Chun Yu Zhang et al.·Jan 5, 2021SaveLearn
Effect of nuclear magnetization distribution within the Woods-Saxon model: Hyperfine splitting in neutral TlThree models of the nuclear magnetization distribution are applied to predict the hyperfine structure of the hydrogenlike heavy ions and neutral thallium atoms: the uniformly magnetized ball model…S. D. Prosnyak, L. V. Skripnikov·Jan 4, 2021SaveLearn
Stochastic dynamics of a few sodium atoms in a cold potassium cloudWe report on the stochastic dynamics of a few sodium atoms immersed in a cold potassium cloud. The studies are realized in a dual-species magneto-optical trap by continuously monitoring the emitted…Rohit Prasad Bhatt, Jan Kilinc, Lilo Höcker et al.·Jan 4, 2021SaveLearn
A passively pumped vacuum package sustaining cold atoms for more than 200 daysCompact cold-atom sensors depend on vacuum technology. One of the major limitations to miniaturizing these sensors are the active pumps -- typically ion pumps -- required to sustain the low pressure…Bethany J. Little, Gregory W. Hoth, Justin Christensen et al.·Jan 4, 2021SaveLearn
Induced THz transitions in Rydberg caesium atoms for application in antihydrogen experimentsAntihydrogen atoms are produced at CERN in highly excited Rydberg states. However, precision measurements require anti-atoms in ground state. Whereas experiments currently rely on spontaneous…Mélissa Vieille-Grosjean, Emiliya Dimova, Zeudi Mazzotta et al.·Jan 4, 2021SaveLearn
Ultracold atom interferometry in spaceBose-Einstein condensates (BECs) in free fall constitute a promising source for space-borne matter-wave interferometry. Indeed, BECs enjoy a slowly expanding wave function, display a large spatial…Maike D. Lachmann, Holger Ahlers, Dennis Becker et al.·Jan 4, 2021SaveLearn
TSV-integrated Surface Electrode Ion Trap for Scalable Quantum Information ProcessingIn this study, we report the first Cu-filled through silicon via (TSV) integrated ion trap. TSVs are placed directly underneath electrodes as vertical interconnections between ion trap and a glass…P. Zhao, J. -P. Likforman, H. Y. Li et al.·Jan 4, 2021SaveLearn
Synthesizing Optical Spectra using Computer-Generated Holography TechniquesExperimental control and detection of atoms and molecules often rely on optical transitions between different electronic states. In many cases, substructure such as hyperfine or spin-rotation…Connor M. Holland, Yukai Lu, Lawrence W. Cheuk·Dec 31, 2020SaveLearn
Rydberg atom-ion collisions in cold environmentsLow-energy collisions of Rydberg atom-ion systems are investigated theoretically. We present the parameter space associated with suitable approaches for the dynamics of Rydberg atom-ion collisions,…Henrik Hirzler, Jesús Pérez-Ríos·Dec 31, 2020SaveLearn
Directional THz generation in hot Rb vapor excited to a Rydberg stateWe optically excite 85Rb atoms in a heated vapor cell to a low-lying Rydberg state 10D5/2 and observe directional terahertz (THz) beams at 3.3 THz and 7.8 THz. These THz fields are…Mark Lam, Sambit B. Pal, Thibault Vogt et al.·Dec 31, 2020SaveLearn
Rapid production of defect-free beryllium ion Coulomb crystalsTrapped atomic ions find wide applications ranging from precision measurement to quantum information science and quantum computing. Among the different atomic species employed, beryllium ions are…Qiming Wu, Melina Filzinger, Yue Shi et al.·Dec 30, 2020SaveLearn
A Synchronous Spin-Exchange Optically Pumped NMR-GyroscopeInertial navigation systems generally consist of timing, acceleration, and orientation measurement units. Although much progress has been made towards developing primary timing sources such as atomic…Susan S. Sorensen, Daniel A. Thrasher, Thad G. Walker·Dec 29, 2020SaveLearn
Nuclear spin squeezing by continuous quantum non-demolition measurement: a theoretical studyWe propose to take advantage of the weak coupling of ground-state helium-3 nuclear spin to its environment to produce long-lived macroscopic quantum states, nuclear spin squeezed states, in a gas…Alan Serafin, Yvan Castin, Matteo Fadel et al.·Dec 29, 2020SaveLearn
Picosecond two-photon absorption laser induced fluorescence (ps-TALIF) in krypton: the role of photoionization on the density depletion of the fluorescing state Kr 5p'[3/2]2The present study focuses on the application of a picosecond (ps) TALIF technique in krypton (Kr) at variable pressure (0.1-10 mbar). The laser intensity (I, units W.cm-2) is tuned between 1 and…K. Gazeli, X Aubert, S Prasanna et al.·Dec 29, 2020SaveLearn
Precision Characterization of the 2D5/2 State and Quadratic Zeeman Coefficient in 171Yb+We report measurements of the branching fraction, hyperfine constant, and second-order Zeeman coefficient of the D5/2 level in 171Yb+ with up to two orders-of-magnitude improvement in…T. R. Tan, C. L. Edmunds, A. R. Milne et al.·Dec 28, 2020SaveLearn