- Spin-Orbit Coupled Degenerate Fermi Gases.
- (PDF) Radio-Frequency Spectroscopy of a Strongly... - A.
- PDF Resonant Fermi gas of atoms with spin-orbit coupling.
- Chapter 2 Quasi-low Dimensional Fermi Gases with Spin-orbit.
- PDF Rashba spin-orbit-coupled atomic Fermi gases.
- Spin dynamics in a spin-orbit coupled Fermi gas | Request PDF.
- [PDF] Phase Diagram of Two-dimensional Polarized Fermi Gas With Spin.
- (PDF) Thermodynamic properties of Rashba Spin-Orbit Coupled Fermi Gas.
- Realization of two-dimensional spin-orbit coupling for Bose... - Science.
- (PDF) Fermi Gases with Synthetic Spin-Orbit Coupling.
- [PDF] Appropriate conditions to realize a p-wave superfluid state.
- PDF Topological superfluid in one-dimensional spin-orbit-coupled atomic.
- Hydrodynamics of Normal Atomic Gases with Spin-orbit Coupling.
- Long-Lived Spin-Orbit-Coupled Degenerate Dipolar Fermi Gas.
Spin-Orbit Coupled Degenerate Fermi Gases.
PDF - We investigate Rashba spin-orbit coupled Fermi gases in square optical lattice by using the determinant quantum Monte Carlo (DQMC) simulations which is free of the sign-problem. We show that the Berezinskii-Kosterlitz-Thoules phase transition temperature is firstly enhanced and then suppressed by spin-orbit coupling in the strong attraction region. In the intermediate attraction region.
(PDF) Radio-Frequency Spectroscopy of a Strongly... - A.
Spin-orbit coupling in two dimensions is essential for observing topological phases in ultracold atoms. Such a coupling was produced in a gas of potassium atoms and a robust Dirac point was. Synthetic spin-orbit (SO) coupling, an important ingredient for quantum simulation of many exotic condensed matter physics, has recently attracted considerable attention. The static and dynamic properties of a SO-coupled Bose-Einstein condensate (BEC) have been extensively studied in both theory and experiment.
PDF Resonant Fermi gas of atoms with spin-orbit coupling.
Recently a scheme has been proposed for generating the two-dimensional Rashba-type spin-orbit coupling (SOC) for ultracold atomic bosons in a bilayer geometry [S.-W. Su et al., Phys. Rev. A 93, 053630 (2016)]. Here we investigate the superfluidity properties of a degenerate Fermi gas affected by the SOC in such a bilayer system. Download PDF Abstract: We describe the creation of a long-lived spin-orbit-coupled gas of quantum degenerate atoms using the most magnetic fermionic element, dysprosium. Spin-orbit-coupling arises from a synthetic gauge field created by the adiabatic following of degenerate dressed states comprised of optically coupled components of an atomic spin. Artificial spin-orbit coupling In 2011 and 2012 artificial spin-orbit coupling has been imposed on both bosonic3 and fermionic4 atomic gases. The single-particle Hamiltonian ˆh sp with both Rashba and Dresselhaus spin-orbit couplings reads ˆh sp = pˆ2 2m +v R (ˆσ 1ˆp y −σˆ 2ˆp x)+v D (ˆσ 1ˆp y + ˆσ 2ˆp x) , (2) with ˆp2.
Chapter 2 Quasi-low Dimensional Fermi Gases with Spin-orbit.
Of three-dimensional (3D) ones. Such superfluids include 3He A phase,54 spin-orbit (SO) coupled Fermi gases,55 ,56 SO coupled Fulde-Ferrell (FF) superfluids57 58 and dipolar Fermi gases.59 Weyl fermions are massless chiral Dirac fermions in 3D mo-mentum space with linear energy dispersion. Such fermions are robust and can only. PDF - 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. Here we report the first experimental study of a spin-orbit coupled Fermi gas. We observe spin dephasing in spin dynamics and momentum distribution asymmetry in the equilibrium state as hallmarks.
PDF Rashba spin-orbit-coupled atomic Fermi gases.
SO coupled degenerate Fermi gas, and the main results include the following: (i) starting from a fully spin polar-ized state and turning on the Raman coupling, we have observed SO coupling induced spin dephasing in the quan-tum spin dynamics; (ii) for equilibrium states we have observed the asymmetry in the spin-resolved momentum distribution. 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. We investigate the ground state of the two-dimensional polarized Fermi gas with spin-orbit coupling and construct the phase diagram at zero temperature. We find there exist phase separation when the binding energy is low. As the binding energy increasing, the topological nontrivial superfluid phase coexist with topologically trivial superfluid phase which is topological phase separation. The.
Spin dynamics in a spin-orbit coupled Fermi gas | Request PDF.
Abstract The spin-orbit-coupled (SOC) ultracold atomic gases provide unique opportunities for exploring exotic quantum phases and introduce new capabilities into the quantum simulation. In this paper, we study the coherent control of spin states in SOC Bose-Einstein condensate (BEC) by exploiting and implementing the general concept of Landau-Zener-Stüeckelberg-Majorana (LZSM.
[PDF] Phase Diagram of Two-dimensional Polarized Fermi Gas With Spin.
We investigate the pairing physics of a three-component spin-orbit coupled Fermi gas in two spatial dimensions. The three atomic hyperfine states of the system are coupled by the recently realized synthetic spin-orbit coupling (SOC), which mixes different hyperfine states into helicity branches in a momentum-dependent manner. As a consequence, the interplay of spin-orbit coupling and the. With + (−) standing for the upper (lower) branch. The same scheme was later applied to Fermi gases 6,7.. The ground state of a Bose gas subject to the spin-orbit coupling realized by the NIST scheme can be either the stripe, the magnetic, or the non-magnetic states depending on the spin-orbit couplings and interatomic interactions 4,5,8.Recently the finite temperature phase diagram of the. 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.... PDF; Other formats. Current browse context: < prev | next > new | recent | 1608. Change to.
(PDF) Thermodynamic properties of Rashba Spin-Orbit Coupled Fermi Gas.
Spin-orbit coupling has been created in this manner in Bose-Einstein condensates [2,7-14] and degen- erate Fermi gases (DFGs) [15-19] of alkali metals. Theseachievementsopennewavenuestoexperimentally study topological matter not realizable in the solid state [20,21].
Realization of two-dimensional spin-orbit coupling for Bose... - Science.
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.
(PDF) Fermi Gases with Synthetic Spin-Orbit Coupling.
Phase separation in a polarized Fermi gas with spin-orbit. Within this work we only study Rashba spin-orbit coupling, and the spin-orbit field is defined as A = A x, 0, 0 where determines the spin-orbit field strength and is the field alignment. Theoretical Chemistry literature database.
[PDF] Appropriate conditions to realize a p-wave superfluid state.
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. Motivated by recent experimental breakthroughs in generating spin-orbit coupling in ultracold Fermi gases using Raman laser beams, we present a systematic study of spin-orbit-coupled Fermi gases con ned in a quasi-one-dimensional trap in the presence of an in-plane Zeeman eld (which can be realized using a nite two-photon Raman detuning).
PDF Topological superfluid in one-dimensional spin-orbit-coupled atomic.
The above two obstacles can be overcome using spin-orbit (SO) coupled degenerate Fermi gases with an in-plane Zeeman field. SO coupling is essential for many important phenomena in condensed matter physics22,23. In solid materials, SO coupling is induced by inversion symmetry breaking of the bulk structure24. While in cold. Download PDF. Open Access;... Liu, X. & Pu, H. Anderson localization of Cooper pairs and Majorana fermions in an ultracold atomic Fermi gas with synthetic spin-orbit coupling. arXiv: 1512. Note that 1D atomic Fermi gases can now be routinely created in cold-atom laboratories [19]. The spin-orbit coupling for neutral atoms may also be generated by using the so-called non-Abelian synthetic gauge fields technique [20,21]. Even in the absence of spin-orbit coupling the 1D ul-tracold atomic Fermi gas is of great interest. It hosts a.
Hydrodynamics of Normal Atomic Gases with Spin-orbit Coupling.
Download PDF Abstract: We investigate Rashba spin-orbit coupled Fermi gases in square optical lattice by using the determinant quantum Monte Carlo (DQMC) simulations which is free of the sign-problem. We show that the Berezinskii-Kosterlitz-Thoules phase transition temperature is firstly enhanced and then suppressed by spin-orbit coupling in the strong attraction region. Abstract. We review our recent experimental realization and investigation of a spin-orbit (SO) coupled Bose-Einstein condensate (BEC) and quantum degenerate Fermi gas. By using two counter-propagating Raman lasers and controlling the different frequency of two Raman lasers to engineer the atom-light interaction, we first study the SO coupling.
Long-Lived Spin-Orbit-Coupled Degenerate Dipolar Fermi Gas.
The spin-orbit-coupled degenerate Fermi gas provides a new platform for realizing topological superfluids and related topological excitations. However, previous studies have been mainly focused.
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