Zobrazeno 1 - 10
of 318
pro vyhledávání: '"Demarco B"'
Experimental quantum physics and computing platforms rely on sophisticated computer control and timing systems that must be deterministic. An exemplar is the sequence used to create a Bose-Einstein condensate at the University of Illinois, which invo
Externí odkaz:
http://arxiv.org/abs/2311.09437
Publikováno v:
Phys. Rev. Research 3, 012009 (2021)
Understanding the collective behavior of strongly correlated electrons in materials remains a central problem in many-particle quantum physics. A minimal description of these systems is provided by the disordered Fermi-Hubbard model (DFHM), which inc
Externí odkaz:
http://arxiv.org/abs/2001.07341
Autor:
Scarola, V. W., DeMarco, B.
Publikováno v:
Phys. Rev. A 92, 053628 (2015)
Quantum degenerate gases trapped in optical lattices are ideal testbeds for fundamental physics because these systems are tunable, well characterized, and isolated from the environment. Controlled disorder can be introduced to explore suppression of
Externí odkaz:
http://arxiv.org/abs/1503.07195
We probe the transition between superfluid and Bose glass phases using quantum quenches of disorder in an ultracold atomic lattice gas that realizes the disordered Bose-Hubbard model. Measurements of excitations generated by the quench exhibit thresh
Externí odkaz:
http://arxiv.org/abs/1502.02333
Autor:
Ponti, G., Bianchi, S., Munoz-Darias, T., DeMarco, B., Dwelly, T., Fender, R. P., Nandra, K., Rea, N., Mori, K., Haggard, D., Heinke, C. O., Degenaar, N., Aramaki, T., Clavel, M., Goldwurm, A., Hailey, C. J., Israel, G. L., Morris, M. R., Rushton, A., Terrier, R.
AX J1745.6-2901 is a high-inclination (eclipsing) neutron star Low Mass X-ray Binary (LMXB) located less than ~1.5 arcmin from Sgr A*. Ongoing monitoring campaigns have targeted Sgr A* frequently and these observations also cover AX J1745.6-2901. We
Externí odkaz:
http://arxiv.org/abs/1409.3224
Publikováno v:
Phys. Rev. A 90, 013602 (2014)
Dissipation is introduced to a strongly interacting ultracold bosonic gas in the Mott-insulator regime of a 3D spin-dependent optical lattice. A weakly interacting superfluid comprised of atoms in a state that does not experience the lattice potentia
Externí odkaz:
http://arxiv.org/abs/1401.5096
We report on the impact of variable-scale disorder on 3D Anderson localization of a non-interacting ultracold atomic gas. A spin-polarized gas of fermionic atoms is localized by allowing it to expand in an optical speckle potential. Using a sudden qu
Externí odkaz:
http://arxiv.org/abs/1307.7175
Publikováno v:
Phys. Rev. Lett. 114, 083002 (2015)
We observe the emergence of a disorder-induced insulating state in a strongly interacting atomic Fermi gas trapped in an optical lattice. This closed quantum system free of a thermal reservoir realizes the disordered Fermi-Hubbard model, which is a m
Externí odkaz:
http://arxiv.org/abs/1305.6072
Publikováno v:
Science 334, 66 (2011)
Anderson localization (AL) is a ubiquitous interference phenomenon in which waves fail to propagate in a disordered medium. We observe three-dimensional AL of noninteracting ultracold matter by allowing a spin-polarized atomic Fermi gas to expand int
Externí odkaz:
http://arxiv.org/abs/1105.5368
We study quenches across the Bose-Hubbard Mott-insulator-to-superfluid quantum phase transition using an ultra-cold atomic gas trapped in an optical lattice. Quenching from the Mott insulator to superfluid phase is accomplished by continuously tuning
Externí odkaz:
http://arxiv.org/abs/1103.4662