Zobrazeno 1 - 10
of 121
pro vyhledávání: '"Fölling, S."'
Akademický článek
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Autor:
Höfer, M., Riegger, L., Scazza, F., Hofrichter, C., Fernandes, D. R., Parish, M. M., Levinsen, J., Bloch, I., Fölling, S.
Publikováno v:
Phys. Rev. Lett. 115, 265302 (2015)
We report on the experimental observation of a novel inter-orbital Feshbach resonance in ultracold 173-Yb atoms, which opens the possibility of tuning the interactions between the 1S0 and 3P0 metastable state, both possessing vanishing total electron
Externí odkaz:
http://arxiv.org/abs/1509.04257
Publikováno v:
Nature Phys. 10, 779-784 (2014)
We report on the direct observation of spin-exchanging interactions in a two-orbital SU(N)-symmetric quantum gas of ytterbium in an optical lattice. The two orbital states are represented by two different (meta-)stable electronic configurations of fe
Externí odkaz:
http://arxiv.org/abs/1403.4761
We demonstrate a novel optical trapping scheme for ultracold atoms. Using a combination of evanescent wave, standing wave, and magnetic potentials we create a deeply 2D Bose-Einstein condensate (BEC) at a few microns from a glass surface. Using techn
Externí odkaz:
http://arxiv.org/abs/0812.3630
Akademický článek
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Autor:
Gerbier, F., Trotzky, S., Foelling, S., Schnorrberger, U., Thompson, J. D., Widera, A., Bloch, I., Pollet, L., Troyer, M., Capogrosso-Sansone, B., Prokof'ev, N. V., Svistunov, B. V.
Publikováno v:
Phys. Rev. Lett. 101, 155303 (2008)
We analyze the interference pattern produced by ultracold atoms released from an optical lattice. Such interference patterns are commonly interpreted as the momentum distributions of the trapped quantum gas. We show that for finite time-of-flights th
Externí odkaz:
http://arxiv.org/abs/0808.2212
Publikováno v:
EPL 87, 60001 (2009)
We propose a controlled method to create and detect d-wave superfluidity with ultracold fermionic atoms loaded in two-dimensional optical superlattices. Our scheme consists in preparing an array of nearest-neighbor coupled square plaquettes or ``supe
Externí odkaz:
http://arxiv.org/abs/0806.0166
Autor:
Cheinet, P., Trotzky, S., Feld, M., Schnorrberger, U., Moreno-Cardoner, M., Foelling, S., Bloch, I.
Publikováno v:
Phys. Rev. Lett. 101, 090404 (2008)
We report on the observation of an interaction blockade effect for ultracold atoms in optical lattices, analogous to Coulomb blockade observed in mesoscopic solid state systems. When the lattice sites are converted into biased double wells, we detect
Externí odkaz:
http://arxiv.org/abs/0804.3372
Autor:
Trotzky, S., Cheinet, P., Fölling, S., Feld, M., Schnorrberger, U., Rey, A. M., Polkovnikov, A., Demler, E. A., Lukin, M. D., Bloch, I.
Publikováno v:
Science, 319, p.295-299 (2008)
Quantum mechanical superexchange interactions form the basis of quantum magnetism in strongly correlated electronic media. We report on the direct measurement of superexchange interactions with ultracold atoms in optical lattices. After preparing a s
Externí odkaz:
http://arxiv.org/abs/0712.1853
Autor:
Foelling, S., Trotzky, S., Cheinet, P., Feld, M., Saers, R., Widera, A., Mueller, T., Bloch, I.
Publikováno v:
Nature, 448, p. 1029-1032 (2007)
Tunnelling of material particles through a classically impenetrable barrier constitutes one of the hallmark effects of quantum physics. When interactions between the particles compete with their mobility through a tunnel junction, intriguing novel dy
Externí odkaz:
http://arxiv.org/abs/0707.3985