Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Grišins, P."'
Autor:
Yang, T. L., Grišins, P., Chang, Y. T., Zhao, Z. H., Shih, C. Y., Giamarchi, T., Hulet, R. G.
Publikováno v:
Phys. Rev. Lett. 121, 103001 (2018)
We present measurements of the dynamical structure factor $S(q,\omega)$ of an interacting one-dimensional (1D) Fermi gas for small excitation energies. We use the two lowest hyperfine levels of the $^6$Li atom to form a pseudo-spin-1/2 system whose s
Externí odkaz:
http://arxiv.org/abs/1803.06331
Autor:
Lebrat, Martin, Grišins, Pjotrs, Husmann, Dominik, Häusler, Samuel, Corman, Laura, Giamarchi, Thierry, Brantut, Jean-Philippe, Esslinger, Tilman
Publikováno v:
Phys. Rev. X 8, 011053 (2018)
We investigate the transport properties of neutral, fermionic atoms passing through a one-dimensional quantum wire containing a mesoscopic lattice. The lattice is realized by projecting individually controlled, thin optical barriers on top of a balli
Externí odkaz:
http://arxiv.org/abs/1708.01250
Publikováno v:
Phys. Rev. B 94, 144518 (2016)
We propose an experiment to detect and characterize the analog Hawking radiation in an analog model of gravity consisting of a flowing exciton-polariton condensate. Under a suitably designed coherent pump configuration, the condensate features an aco
Externí odkaz:
http://arxiv.org/abs/1606.02277
Autor:
Rauer, Bernhard, Grišins, Pjotrs, Mazets, Igor E., Schweigler, Thomas, Rohringer, Wolfgang, Geiger, Remi, Langen, Tim, Schmiedmayer, Jörg
Publikováno v:
Phys. Rev. Lett. 116, 030402 (2016)
We experimentally study the dynamics of a degenerate one-dimensional Bose gas that is subject to a continuous outcoupling of atoms. Although standard evaporative cooling is rendered ineffective by the absence of thermalizing collisions in this system
Externí odkaz:
http://arxiv.org/abs/1505.04747
Publikováno v:
Optica 3, 725 (2016)
Nonlinear optical phenomena are typically local. Here we predict the possibility of highly nonlocal optical nonlinearities for light propagating in atomic media trapped near a nano-waveguide, where long-range interactions between the atoms can be tai
Externí odkaz:
http://arxiv.org/abs/1412.8331
Publikováno v:
Phys. Rev. A 93, 033634 (2016)
We theoretically investigate a weakly-interacting degenerate Bose gas coupled to an empty Markovian bath. We show that in the universal phononic limit the system evolves towards an asymptotic state where an emergent temperature is set by the quantum
Externí odkaz:
http://arxiv.org/abs/1411.4946
Autor:
Grišins, Pjotrs, Mazets, Igor E
Publikováno v:
Computer Physics Communications 185 (7), 2014
We demonstrate the application of the Metropolis-Hastings algorithm to sampling of classical thermal states of one-dimensional Bose-Einstein quasicondensates in the classical fields approximation, both in untrapped and harmonically trapped case. The
Externí odkaz:
http://arxiv.org/abs/1308.6125
Autor:
Grisins, Pjotrs, Mazets, Igor E.
Publikováno v:
Phys. Rev. A 87, 013629 (2013)
We revisit the theory of tunnel-coupled atomic quasicondensates in double-well elongated traps at finite temperatures. Using the functional-integral approach, we calculate the relative-phase correlation function beyond the harmonic limit of small flu
Externí odkaz:
http://arxiv.org/abs/1206.3430
Autor:
Grisins, Pjotrs, Mazets, Igor E.
Publikováno v:
Phys. Rev. A 84, 053635 (2011)
We present numerical results demonstrating the possibility of thermalization of single-particle observables in a one-dimensional integrable system (a quasicondensate of ultra-cold, weakly-interacting bosonic atoms being studied as a definite example)
Externí odkaz:
http://arxiv.org/abs/1108.5380
Autor:
Acosta, V. M., Auzinsh, M., Gawlik, W., Grisins, P., Higbie, J. M., Kimball, D. F. Jackson, Krzemien, L., Ledbetter, M. P., Pustelny, S., Rochester, S. M., Yashchuk, V. V., Budker, D.
Publikováno v:
Optics Express, Vol. 16 Issue 15, pp.11423-11430 (2008)
Anisotropy of atomic states is characterized by population differences and coherences between Zeeman sublevels. It can be efficiently created and probed via resonant interactions with light, the technique which is at the heart of modern atomic clocks
Externí odkaz:
http://arxiv.org/abs/0709.4283