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Spin-orbit Coupled Fermi Gases and Heavy Solitons in... - NASA/ADS.
[1305.2443] Spin dynamics in a spin-orbit coupled Fermi.
Long-Lived Spin-Orbit-Coupled Degenerate Dipolar Fermi Gas.
Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas.
PDF Observation of Floquet bands in driven spin-orbit-coupled Fermi gases.
Fulde-Ferrell pairing instability of a Rashba spin-orbit-coupled Fermi gas.
Spin dynamics in a spin-orbit coupled Fermi gas | Request PDF.
Collective dipole oscillations of a spin-orbit coupled Fermi gas.
PDF FFLO Superfluids in 2D Spin-Orbit Coupled Fermi Gases.
Spin orbit coupled fermi gas pdf arxiv - online casino.
Pairing superfluidity in spin-orbit coupled ultracold Fermi gases.
Probing two Higgs oscillations in a one-dimensional Fermi superfluid.
Spin-orbit-coupled two-electron Fermi gases of ytterbium atoms.

Spin-orbit Coupled Fermi Gases and Heavy Solitons in... - NASA/ADS.

In this Letter, we report the first experimental realization and investigation of a spin-orbit coupled Fermi gas. Both spin dephasing in spin dynamics and momentum distribution asymmetry of the equilibrium state are observed as hallmarks of spin-orbit coupling in a Fermi gas. The single particle dispersion is mapped out by using momentum-resolved radio-frequency spectroscopy. From momentum.

[1305.2443] Spin dynamics in a spin-orbit coupled Fermi.

The information of the spin-orbit coupling is encoded in the single atom dispersion α,k. For degenerate Fermi gases, χab shall be dominated by the contribution from close to the Fermi surface. We calculate χxx by Eq. (16) for 1D, 2D and 3D Fermi gases with spin-orbit coupling generated in the x direction by the NIST scheme with δ = 0.

Long-Lived Spin-Orbit-Coupled Degenerate Dipolar Fermi Gas.

Abstract. Dark solitons in quantum fluids are well-known nonlinear excitations that are usually characterized by a single length scale associated with the underlying background fluid. We show that in the presence of spin-orbit coupling and a linear Zeeman field, superfluid Fermi gases support two different types of nonlinear excitations. We study the dynamics of a non-degenerate, harmonically trapped Fermi gas following a sudden ramp of the spin-orbit coupling strength. In the non-interacting limit, we solve the Boltzmann equation in the presence of spin orbit coupling analytically, and derive expressions for the dynamics of an arbitrary initial spin state. In particular we show that for a fully spin polarized initial state.

Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas.

Ultracold Fermi gas. Keywords spin-orbit coupling, Bose-Einstein condensate, Fermi gases, topological change, momentum-resolved radio-frequency spectroscopy, momentum-resolved Raman spectroscopy PACS numbers 67.85.d, 05.30.Fk, 03.75.b, 03.75.Mn Contents 1 Introduction 598 2 Generation of SO coupling in BEC 87Rb 600. We address a possibility of creating soliton states in oblate binary-fermionic clouds in the framework of the density-functional theory, which include…..

PDF Observation of Floquet bands in driven spin-orbit-coupled Fermi gases.

The realization of all-optical SOC for ytterbium fermions should offer a new route to a long-lived spin-orbit coupled Fermi gas and greatly expand our capability in studying novel spin-orbit physics with alkaline-earth-like atoms.

Fulde-Ferrell pairing instability of a Rashba spin-orbit-coupled Fermi gas.

1D spin-orbit-coupled Fermi gas were recently predicted [30,31]. However, the crucial issue raised in practical manipulations, i.e., the fate of these solitons at a finite velocity of motion, was not addressed. For concreteness, in the main text we focus on 1D spin-orbit-coupled Fermi superfluids. The results of 2D Fermi. However, for three-dimensional (3D) Fermi gas, the FFLO phase is not favored [18-21] 4. Over the last few years, another milestone achievement in cold-atom research, the realization of artificial spin-orbit (SO) coupling, first in bosonic systems and later in fermioinic ones [23, 24] has occurred. By tailoring the laser fields that generate.

Spin dynamics in a spin-orbit coupled Fermi gas | Request PDF.

Collective dipole oscillations of a spin-orbit coupled Fermi gas.

We investigate the two-body properties of a spin-1/2 Fermi gas subject to a spin-orbit coupling induced by laser fields. When attractive s-wave interaction between unlike spins is present, the. FIG. 1. (a) Energy-level diagram of Fermi gases 40K. Three hyperﬁne spin states are coupled with the electronic excited states through three Raman lasers. The atoms are initially prepared in the free reservoir spin state |9/2,5/2. (b) Conﬁguration of three Raman lasers in the xy plane. The detunings of the Raman lasers 2 and 3 are. Recent experimental breakthrough in realizing spin-orbit (SO) coupling for cold atoms has spurred considerable interest in the physics of 2D SO coupled Fermi superfluids, especially topological Majorana fermions (MFs) which were predicted to exist at zero temperature. However, it is well known that long-range superfluid order is destroyed in 2D by the phase fluctuation at finite temperature.

PDF FFLO Superfluids in 2D Spin-Orbit Coupled Fermi Gases.

1 Hangzhou Workshop on Quantum Matter, 2013 Experimental realization of spin-orbit coupled degenerate Fermi gas Jing Zhang State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan , P.R.China. 2 Outline Motivation: Quantum simulation with ultracold atoms Experimental realization of spin-orbit coupling in degenerate Fermi gas. Zero-temperature mean-field chemical potential of a spin-orbit-coupled Fermi gas on the BCS side (1 / k F a s = − 1) and in the unitary limit (1 / k F a s = 0), calculated following the approach in Ref.. Here, we take a spin-orbit coupling strength λ k F / E F = 1, where k F and E F are the Fermi wave vector and Fermi energy, respectively..

Spin orbit coupled fermi gas pdf arxiv - online casino.

Alternative phonon coupling mechanisms requiring spin-orbit coupling or multiband effects 20,21,22... Interacting fermi gas and phonon mechanisms in the nonadiabatic regime. Phys. Rev. B 93. In this paper, we investigate the phase diagram of the interacting Fermi gas with Rashba-type SOC on a square optical lattice. Such a system can be described by the spin–orbit (SO) coupled fermionic Hubbard model, see equation. We show that the SOC has important implications on the properties of MIT and phase diagram of this system. The speed of the Goldstone sound mode of a spin-orbit-coupled atomic Fermi gas loaded in a square optical lattice with a non-Abelian gauge field in the presence of a Zeeman field is calculated.

Pairing superfluidity in spin-orbit coupled ultracold Fermi gases.

The U.S. Department of Energy's Office of Scientific and Technical Information..

Probing two Higgs oscillations in a one-dimensional Fermi superfluid.

Simplicity we consider a uniform Fermi gas and neglect the weak harmonic trap in the 2D plane, whose effects can be incorporated using the local density approximation. The Hamiltonian for this uniform 2D spin-orbit-coupled degenerate Fermi gas can be written as H = H F +H I +H soc, (1) where H F = k,σ ζ kC † kσ C kσ (2) isthesingle.

Spin-orbit-coupled two-electron Fermi gases of ytterbium atoms.

The case of Rashba spin-orbit coupling [16,20,31-35], while more recent theoretical work has considered the equal mixture of Rashba and Dresselhaus spin-orbit coupling considered here [36,37]. We generate spin-orbit coupling in a Fermi gas by dressing the jf¼9=2;m F ¼ 7=2ij"i and jf¼9=2; m F ¼ 9=2ij#i hyperﬁne spin states of 40K's.