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We study the interplay between electron-electron interaction and Rashba spin-orbit coupling in the two-dimensional electron gas. Using the random phase approximation we predict new screening properties of the electron gas which result in…

介观与纳米尺度物理 · 物理学 2007-05-23 M. Pletyukhov , V. Gritsev

Due to the recent experimental progress, tunable spin-orbit (SO) interactions represent ideal candidates for the control of polarization and dynamical spin properties in both quantum wells and cold atomic systems. A detailed understanding…

量子气体 · 物理学 2016-09-05 Alberto Ambrosetti , Luca Salasnich , Pier Luigi Silvestrelli

We consider two-dimensional spin-orbit coupled atomic Bose-Einstein condensate in a radially-periodic potential. The system supports different types of stable self-sustained states including radially-symmetric vorticity-carrying modes with…

量子气体 · 物理学 2019-03-28 Yaroslav V. Kartashov , Dmitry A. Zezyulin

We investigate the low-energy scattering and bound states of two two-component fermionic atoms in pure two-dimensional (2D) and quasi-2D confinements with Rashba spin-orbit coupling (SOC). We find that the SOC qualitatively changes the…

量子气体 · 物理学 2013-05-30 Peng Zhang , Long Zhang , Wei Zhang

The realization of spin-orbit-coupled ultracold gases has driven a wide range of researches and is typically based on the rotating wave approximation (RWA). By neglecting the counter-rotating terms, RWA characterizes a single near-resonant…

We consider a two-component pancake-shaped, i.e., effectively two-dimensional (2D), Bose-Einstein condensate (BEC) coupled by the spin-orbit (SO) and Rabi terms. The SO coupling adopted here is of the mixed Rashba-Dresselhaus type. For this…

量子气体 · 物理学 2014-10-14 Luca Salasnich , Wesley B. Cardoso , Boris A. Malomed

We study a two-component Bose gas with artificial spin-orbit coupling (SOC) which couples the center-of-mass momentum of atom to its internal states. We show that in this system resonance can be induced by tuning SOC strength. With a…

量子气体 · 物理学 2018-10-10 Qi Gu , Lan Yin

Ultracold bosons in optical lattices are one of the few systems where bosonic matter is known to exhibit strong correlations. Here we push the frontier of our understanding of interacting bosons in optical lattices by adding synthetic…

量子气体 · 物理学 2018-01-03 Daisuke Yamamoto , I. B. Spielman , C. A. R. Sá de Melo

Spin-orbit coupling (SOC) can give rise to interesting physics, from spin Hall to topological insulators, normally in condensed matter systems. Recently, this topical area has extended into atomic quantum gases in searching for…

量子气体 · 物理学 2012-04-11 Z. F. Xu , L. You

The band structure of two-dimensional artificial superlattices in the presence of (Rashba-type) spin-orbit interaction (SOI) is presented. The position and shape of the energy bands in these spintronic crystals depend on the geometry as…

介观与纳米尺度物理 · 物理学 2015-06-24 Peter Foldi , Viktor Szaszko-Bogar , F. M. Peeters

Disorder in spin-orbit (SO) coupling is an important feature of real low-dimensional electron structures. We study spin relaxation due to such a disorder as well as resulting abilities of spin manipulation. The spin relaxation reveals…

介观与纳米尺度物理 · 物理学 2009-09-03 V. K. Dugaev , E. Ya. Sherman , V. I. Ivanov , J. Barnas

We derive an analytical expression for the scattering amplitude of two ultracold atoms of arbitrary spin and with general spin-orbit (SO) coupling, on the basis of our recent work (Phys. Rev. A \textbf{86}, 053608 (2012)). As an…

量子气体 · 物理学 2013-07-16 Long Zhang , Youjin Deng , Peng Zhang

The quantum emulation of spin-momentum coupling (SMC), a crucial ingredient for the emergence of topological phases, is currently drawing considerable interest. In previous quantum gas experiments, typically two atomic hyperfine states were…

量子气体 · 物理学 2016-03-01 M. A. Khamehchi , Chunlei Qu , M. E. Mossman , Chuanwei Zhang , P. Engels

We discuss pairing of light-matter bosons under effective spin-orbit (SO) coupling in two-dimensional semiconductors. The SO coupling is shown to induce dynamical broadening of a two-body bound state. Application of a transverse magnetic…

量子气体 · 物理学 2022-11-02 Sergueï V. Andreev

We study the spin squeezing in a spin-1/2 Bose-Einstein condensates (BEC) with Raman induced spin-orbit coupling (SOC). Under the condition of two-photon resonance and weak Raman coupling strength, the system possesses two degenerate ground…

量子气体 · 物理学 2020-08-26 Li Chen , Yunbo Zhang , Han Pu

An effective spin-orbit coupling can be generated in cold atom system by engineering atom-light interactions. In this letter we study spin-1/2 and spin-1 Bose-Einstein condensates with Rashba spin-orbit coupling, and find that the…

量子气体 · 物理学 2010-10-27 Chunji Wang , Chao Gao , Chao-Ming Jian , Hui Zhai

Spin and orbital are two basic degrees of freedom that play significant roles in exploring exotic quantum phases in optical lattices with synthetic spin-orbit coupling (SOC) and high orbital bands, respectively. Here, we combine these two…

量子气体 · 物理学 2026-02-05 Zhi-Hao Huang , Kou-Han Ma , Bao-Zong Wang , W. Vincent Liu , Xiong-Jun Liu

Spin-orbit coupling (SOC) is one of the crucial factors that affect the chiral symmetry of matter by causing the spatial symmetry breaking of the system. We find that Raman-induced SOC can induce a chiral supersolid phase with a helical…

量子气体 · 物理学 2025-10-07 Xianghua Su , Xiping Fu , Yang He , Ying Shang , Kaiyuan Ji , Linghua Wen

We investigate magnetic properties in the superfluid and Mott-insulating states of two-component bosons with spin-orbit (SO) coupling in 2D square optical lattices. The spin-independent hopping integral $t$ and SO coupled one $\lambda $are…

量子气体 · 物理学 2013-05-13 Zi Cai , Xiangfa Zhou , Congjun Wu

We report the observation of tunable spin-orbit coupling (SOC) for ultracold $^{87}$Rb atoms in hyperfine spin-1 states. Different from most earlier experiments where atomic SOC of pseudo-spin-1/2 are synthesized with Raman coupling lasers,…

量子气体 · 物理学 2017-01-05 Xinyu Luo , Lingna Wu , Jiyao Chen , Qing Guan , Kuiyi Gao , Zhi-Fang Xu , L. You , Ruquan Wang