Auflistung nach Schlagwort "atoms"

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  • BCS pairing in a trapped dipolar Fermi gas 
    Baranov, M.A.; Dobrek, L.; Lewenstein, M. (Bristol : IOP Publishing Ltd., 2004)
    We present a detailed study of the BCS pairing transition in a trapped polarized dipolar Fermi gas. In the case of a shallow nearly spherical trap, we find a decrease in the transition temperature as a function of the trap ...
  • Damped Bloch oscillations of Bose-Einstein condensates in disordered potential gradients 
    Drenkelforth, S.; Buening, G. Kleine; Will, J.; Schulte, T.; Murray, N.; Ertmer, Wolfgang; Santos, Luis; Arlt, Jan J. (Bristol : IOP Publishing Ltd., 2008)
    We investigate both experimentally and theoretically disorder-induced damping of Bloch oscillations of Bose-Einstein condensates in optical lattices. The spatially inhomogeneous force responsible for the damping is realized ...
  • Detecting metrologically useful entanglement in the vicinity of Dicke states 
    Apellaniz, Iagoba; Lücke, Bernd; Peise, Jan; Klempt, Carsten; Toth, Geza (Bristol : IOP Publishing Ltd., 2015-08-13)
    We present a method to verify the metrological usefulness of noisy Dicke states of a particle ensemble with only a few collective measurements, without the need for a direct measurement of the sensitivity. Our method ...
  • Long-range interaction of copper adatoms and copper dimers on Ag(111) 
    Morgenstern, Karina; Rieder, Karl-Heinz (Bristol : IOP Publishing Ltd., 2005)
    Formation and motion of copper adatoms and addimers on Ag( 1 1 1) are investigated with low-temperature scanning tunnelling microscopy between 6 and 25 K. Adatoms move between fcc and hcp sites with a strong preference for ...
  • On the definitions of bond index and valence for correlated wave functions 
    Ponec, R.; Uhlik, F.; Cooper, D.L.; Jug, K. (Zagreb : Croatian Chemical Soc., 1996)
    Definitions of bond index and Valence for correlated wave functions are discussed. The utility of renormalizing Wiberg bond indices is investigated for a series of simple molecules at the spin-coupled level of theory.
  • Optomechanical resonator-enhanced atom interferometry 
    Richardson, Logan L.; Rajagopalan, Ashwin; Albers, Henning; Meiners, Christian; Nath, Dipankar; Schubert, Cchristian; Tell, Dorothee; Wodey, Étienne; Abend, Sven; Gersemann, Mathias; Ertmer, Wolfgang; Rasel, Ernst M.; Schlippert, Dennis; Mehmet, Moritz; Kumanchik, Lee; Colmenero, Luis; Spannagel, Ruven; Braxmaier, Claus; Guzmán, Felipe (Berlin [u.a.] : Nature Research, 2020)
    Matter-wave interferometry and spectroscopy of optomechanical resonators offer complementary advantages. Interferometry with cold atoms is employed for accurate and long-term stable measurements, yet it is challenged by ...
  • Phase magnification by two-axis countertwisting for detection-noise robust interferometry 
    Anders, Fabian; Pezze, Luca; Smerzi, Augusto; Klempt, Carsten (College Park : American Physical Society, 2018)
    Entanglement-enhanced atom interferometry has the potential of surpassing the standard quantum limit and eventually reaching the ultimate Heisenberg bound. The experimental progress is, however, hindered by various technical ...
  • Scalable Dissipative Preparation of Many-Body Entanglement 
    Reiter, Florentin; Reeb, David; Sorensen, Anders S. (College Park : American Physical Society, 2016)
    We present a technique for the dissipative preparation of highly entangled multiparticle states of atoms coupled to common oscillator modes. By combining local spontaneous emission with coherent couplings, we engineer ...
  • Two-Color Grating Magneto-Optical Trap for Narrow-Line Laser Cooling 
    Bondza, S.; Lisdat, C.; Kroker, S.; Leopold, T. (College Park, Md. [u.a.] : American Physical Society, 2022)
    We demonstrate the two-color cooling and trapping of alkaline-earth atoms in a grating magneto-optical trap (GMOT). The trap is formed by a single incident laser beam together with four secondary beams that are generated ...
  • Universality of weakly bound dimers and Efimov trimers close to Li-Cs Feshbach resonances 
    Ulmanis, J.; Haefner, S.; Pires, R.; Kuhnle, E. D.; Weidemueller, M.; Tiemann, Eberhard (Bristol : IOP Publishing Ltd., 2015-05-07)
    We study the interspecies scattering properties of ultracold Li-Cs mixtures in their two energetically lowest spin channels in the magnetic field range between 800 and 1000 G. Close to two broad Feshbach resonances (FR) ...