Tunneling dynamics and phase transition of a Bose-Fermi mixture in a double well

Peng-Tang, Qi; Duan, Wen‐Shan

doi:10.1103/physreva.84.033627

Cited by 17 publications

(2 citation statements)

References 30 publications

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“…The possibility of holding ultracold gases in magnetooptical traps makes it possible to create effectively one-or two-dimensional (1D or 2D) situations. A great number of works addressed such 1D settings [34][35][36][37][38][39][40][41]. In particular, the variational approximation (VA) makes it possible to reduce the 3D description to 1D or 2D [42,43].…”

Section: Introductionmentioning

confidence: 99%

Correlations and synchronization in a Bose–Fermi mixture

Díaz

Laroze

Malomed

2015

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

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We study a Bose-Fermi mixture within the framework of the meanfield theory, including three possible regimes for the fermionic species: fully polarized, BCS, and unitarity. Starting from the 3D description and using the variational approximation (VA), we derive 1D and 2D systems of equations, under the corresponding confining potentials. This method produces a pair of nonlinear Schrödinger (NLS) equations coupled to algebraic equations for the transverse widths of the confined state. The equations incorporate interactions between atoms of the same species and between the species, assuming that the latter can be manipulated by means of the Feshbach resonance (FR). As an application, we explore spatial density correlations in the ground state (GS) between the species, concluding that they strongly depend on the sign and strength of the inter-species interaction. Also studied are the dynamics of the mixture in a vicinity of the GS and the corresponding spatiotemporal inter-species correlation. The correlations are strongly affected by the fermionic component, featuring the greatest variation in the unitary regime. Results produced by the VA are verified by comparison with full numerical solutions.

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Section: Introductionmentioning

confidence: 99%

Correlations and synchronization in a Bose–Fermi mixture

Díaz

Laroze

Malomed

2015

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

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“…In order to supply strong nonlinearity and avoid unmanageable attenuation and distortion, most previous studies utilized intense laser fields and far-off resonance excitation schemes to generate optical vector solitons in passive optical media [14][15][16]. However, based on the quantum coherence effects, for example the electromagnetically induced transparency (EIT) [17], optical nonlinearity of the medium can be largely enhanced in resonant systems [18][19][20][21], which provides the possibility of generating optical solitons with weak-light intensity and ultraslow group velocity [3,[22][23][24][25][26][27][28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Superluminal optical vector solitons in a five-level M-type atomic system

Niu

et al. 2015

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

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We investigate generation of superluminal vector optical solitons in a five-level M-type atomic system within active-Raman-gain regime. By analyzing the linear and nonlinear optical properties of the system, we demonstrate that the dispersion effects of the probe fields can be well balanced by self-phase and cross-phase modulation of the Kerr nonlinearity and various types of optical vector solitons with superluminal group velocity can be formed in the system. Moreover, by choosing proper parameters Manakov temporal vector solitons can also be realized in this atomic system.

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