Faraday waves in quasi-one-dimensional superfluid Fermi-Bose mixtures

Abdullaev, F. Kh.; Ögren, Magnus; Sørensen, Mads Peter

doi:10.1103/physreva.87.023616

Cited by 28 publications

(21 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[5][6][7][8]. Similar phenomena are also found in other branches of physics, such as Bose-Einstein condensates with timevarying external fields [9,10].The occurrence of these effects in micro-structured fibers, which permit to observe them on a shorter scale and explore a wide range of input power and wavelength, have been recently reported, see [11,12], where a photonic-crystal fiber (PCF, [13]) of varying diameter is used. By operating near the zero-dispersion point (ZDP) [14], the main contribution comes from the variation of the GVD, from which the name dispersion-oscillating * andrea.armaroli@mpl.mpg.de fibers (DOFs); partial coherence and the effects of large GVD swings [15,16] were considered.The conventional explanation is in term of a long grating assisted quasi-phase matching (QPM) process [4,7,8,11,12], but it was verified in [17] that this approximation is inaccurate if the period of parameter variation is comparable with the length scale at which the nonlinear processes occur.…”

mentioning

confidence: 59%

Suppression and splitting of modulational instability sidebands in periodically tapered optical fibers because of fourth-order dispersion

Armaroli

Biancalana

2014

Opt. Lett.

View full text Add to dashboard Cite

We study the modulational instability induced by periodic variations of group-velocity dispersion in the proximity of the zero dispersion point. Multiple instability peaks originating from parametric resonance coexist with the conventional modulation instability because of fourth-order dispersion, which in turn is suppressed by the oscillations of dispersion. Moreover, isolated unstable regions appear in the space of parameters because of imperfect phase matching. This confirms the dramatic effect of periodic tapering in the control and shaping of MI sidebands in optical fibers.

show abstract

mentioning

confidence: 59%

Suppression and splitting of modulational instability sidebands in periodically tapered optical fibers because of fourth-order dispersion

Armaroli

Biancalana

2014

Opt. Lett.

View full text Add to dashboard Cite

show abstract

“…As an example, we have two-component BECs with time-dependent inter-and intra-species interactions, with single and coupled BECs with time-dependent dipolar interactions, where FWs are considered an excellent tool to study nonlocal effects in polar gases [22,23]. Another example is given in [24], considering studies of superfluid Bose-Fermi mixtures with modulated two-body scattering length for the Bose-Fermion system. Also belonging to this group are studies with an analysis of parametric instabilities in an array of BECs with varying atomic scattering length, based on a discrete nonlinear Schrödinger equation [25].…”

Section: Introductionmentioning

confidence: 99%

Faraday waves in Bose–Einstein condensates with engineering three-body interactions

Abdullaev¹,

Gammal²,

Tomio³

2015

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

We consider Bose-Einstein condensates with two-and three-body interactions periodically varying in time. Two models of time-dependent three-body interactions, with quadratic and quartic dependence on the two-body atomic scattering length a s , are studied. It is shown that parametric instabilities in the condensate lead to the generation of Faraday waves (FWs), with wavelengths depending on the background scattering length, as well as on the frequency and amplitude of the modulations of a s. From an experimental perspective, this opens a new possibility to tune the period of Faraday patterns by varying not only the frequency of modulations and background scattering length, but also the amplitude of the modulations. The latter effect can be used to estimate the parameters of three-body interactions from the FW experimental results. Theoretical predictions are confirmed by numerical simulations of the corresponding extended Gross-Pitaevskii equation.

show abstract

“…The experimental breakthrough provides new opportunities to study the intriguing properties of SBFMs inaccessible in a Bose-Einstein condensate (BEC) with arbitrary spin [8,9], pure bosonic superfluid mixtures, and pure fermionic superfluid mixtures. As a matter of fact, many novel physical characteristics have been predicted theoretically in SBFMs, including the saturation effect of nonlinear interaction in the strong-coupling unitarity limit [10], localized Bose-Fermi bright soliton [11], possibility of simulating dense quantum chromodynamics matter [12], phase transition overlapping with phase separation [13], and the Faraday pattern generation [14].…”

Section: Introductionmentioning

confidence: 99%

Structure and dynamics of a rotating superfluid Bose-Fermi mixture

Wen

2014

Phys. Rev. A

View full text Add to dashboard Cite

We investigate the structure and dynamics of a rotating superfluid Bose-Fermi mixture (SBFM) made of superfluid bosons and two-component (spin up and down) superfluid fermions. A ground-state phase diagram for the nonrotating case of a SBFM with specific parameters is given, where the ground-state configuration of a nonrotating SBFM is mainly determined by the boson-fermion interaction. For the rotating case of a SBFM with a sufficiently large rotation frequency, we show that the system supports a mixed phase and three typical layer separated phases. In particular, the visible vortex formation in the fermionic superfluid exhibits a remarkable hysteresis effect during the dynamical evolution of a rotating SBFM, which is evidently different from the case of rotating two-component Bose-Einstein condensates.Comment: 8 pages,6 figure

show abstract

Faraday waves in quasi-one-dimensional superfluid Fermi-Bose mixtures

Cited by 28 publications

References 44 publications

Suppression and splitting of modulational instability sidebands in periodically tapered optical fibers because of fourth-order dispersion

Suppression and splitting of modulational instability sidebands in periodically tapered optical fibers because of fourth-order dispersion

Faraday waves in Bose–Einstein condensates with engineering three-body interactions

Structure and dynamics of a rotating superfluid Bose-Fermi mixture

Contact Info

Product

Resources

About