Zobrazeno 1 - 10
of 321
pro vyhledávání: '"Plata J"'
Autor:
Llorente, J. M. Gomez, Plata, J.
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 57 235301, 2024
The effects of modulating spin-orbit coupled Bose-Einstein condensates are analytically studied. A sinusoidal driving of the coupling amplitude is shown to induce significant changes in the energy bands and in the associated spin-momentum locking. Mo
Externí odkaz:
http://arxiv.org/abs/2411.03151
Publikováno v:
Phys. Rev. A 108, 052412 (2023)
We analyze the robust character against non-static noise of clock transitions implemented via a method of continuous dynamical decoupling (CDD) in a hyperfine Zeeman multiplet in ^{87}\textrm{Rb}. The emergence of features specific to the quadratic c
Externí odkaz:
http://arxiv.org/abs/2311.08508
Autor:
Llorente, J. M. Gomez, Plata, J.
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 56 095301 (2023)
We analytically study the dynamics of a solitonic vortex (SV) in a superfluid confined in a non-axisymmetric harmonic trap. The study provides a framework for analyzing the role of the trap anisotropy in the oscillation of SVs observed in recent expe
Externí odkaz:
http://arxiv.org/abs/2304.03569
Autor:
Llorente, J. M. Gomez, Plata, J.
Publikováno v:
Phys. Rev. A 100, 043613, (2019)
We analytically study the expansion of a Bose-Einstein condensate in a ring-shaped trap with an increasing central radius. The evolution of the ground state is described using a scaling transform. Additionally, the dynamics of excited azimuthal modes
Externí odkaz:
http://arxiv.org/abs/1910.11373
Autor:
Llorente, J. M. Gomez, Plata, J.
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 52 075004 (2019)
We present a theoretical study on the origin of some findings of recent experiments on sonic analogs of gravitational black holes. We focus on the realization of a black-hole lasing configuration, where the conclusive identification of stimulated Haw
Externí odkaz:
http://arxiv.org/abs/1903.08234
Autor:
Llorente, J. M. Gomez, Plata, J.
Publikováno v:
Phys. Rev. A 94, 053605 (2016)
We analytically study the effect of gravitational and harmonic forces on ultra-cold atoms with synthetic spin-orbit coupling (SOC). In particular, we focus on the recently observed transitions between internal states induced by acceleration of the ex
Externí odkaz:
http://arxiv.org/abs/1611.02198
Autor:
Nath, P., Plata, J. J., Usanmaz, D., Toher, C., Fornari, M., Nardelli, M. Buongiorno, Curtarolo, S.
The lack of computationally inexpensive and accurate ab-initio based methodologies to predict lattice thermal conductivity, without computing the anharmonic force constants or time-consuming ab-initio molecular dynamics, is one of the obstacles preve
Externí odkaz:
http://arxiv.org/abs/1607.07826
Autor:
Llorente, J. M. Gomez, Plata, J.
Publikováno v:
Phys. Rev. A 93, 063633 (2016)
We focus on a technique recently implemented for controlling the magnitude of synthetic spin-orbit coupling (SOC) in ultra-cold atoms in the Raman-coupling scenario. This technique uses a periodic modulation of the Raman-coupling amplitude to tune th
Externí odkaz:
http://arxiv.org/abs/1606.08800
Autor:
Plata, J.
Publikováno v:
J. Phys. A: Math. Theor. 49, 045001 (2016)
We study the dynamics of a classical nonlinear oscillator subject to noise and driven by a sinusoidal force. In particular, we give an analytical identification of the mechanisms responsible for the supernarrow peaks observed recently in the spectrum
Externí odkaz:
http://arxiv.org/abs/1512.06251
Autor:
Plata, J.
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 48 245304 (2015)
We present a proposal for controlling the conversion of ultracold atoms into molecules by fixing the phase difference between two oscillating magnetic fields. The scheme is based on the use of a magnetic Feshbach resonance with a field modulation tha
Externí odkaz:
http://arxiv.org/abs/1511.01401