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We study laser induced spin-orbit (SO) coupling in cold atom systems where lasers couple three internal states to a pair of excited states, in a double tripod topology. Proper choice of laser amplitudes and phases produces a Hamiltonian…

量子物理 · 物理学 2015-05-30 G. Juzeliunas , J. Ruseckas , D. L. Campbell , I. B. Spielman

We investigate the thermal physics of a Bose-Hubbard model with Rashba spin-orbit coupling starting from a strong coupling mean-field ground state. The essential role of the spin-orbit coupling $\left(\gamma\right)$ is to promote…

强关联电子 · 物理学 2019-05-22 Arijit Dutta , Abhishek Joshi , K. Sengupta , Pinaki Majumdar

We propose an experimental scheme to create spin-orbit coupling in spin-3 Cr atoms using Raman processes. Employing linear Zeeman effect and optical Stark shift, two spin states within the ground electronic manifold are selected, which…

量子气体 · 物理学 2012-06-11 Y. Deng , J. Cheng , H. Jing , C. -P. Sun , S. Yi

Moir\'e related physics in twisted bilayer two-dimensional (2D) materials has attracted widespread interest in condensed matter physics. Simulation of moir\'e related physics in cold atom platform is expected to outperform the 2D materials…

量子气体 · 物理学 2025-07-03 Jian-Hua Zeng , Qizhong Zhu , Liang He

Spin-orbit coupling (SOC) and electron-electron interaction can mutually influence each other and give rise to a plethora of intriguing phenomena in condensed matter systems. In pristine bilayer graphene, which has weak SOC, intrinsic…

We study the effect of the synthetic spin-orbit coupling in a two-component Bose-Hubbard model in one dimension by employing the density-matrix renormalization group method. A ferromagnetic long-range order emerges in both Mott insulator…

强关联电子 · 物理学 2014-04-21 Jize Zhao , Shijie Hu , Jun Chang , Ping Zhang , Xiaoqun Wang

We present a general framework for optically inducing, controlling, and probing spin states in moir\'e systems. In particular, we demonstrate that applying Raman optical drives to moir\'e transition metal dichalcogenide bilayers can realize…

强关联电子 · 物理学 2025-04-21 Tsung-Sheng Huang , Andrey Grankin , Yu-Xin Wang , Mohammad Hafezi

The discovery of correlated insulating states in moir\'e heterostructures has renewed the interest in strongly-coupled electron systems where spin and valley (or layer) degrees of freedom are intertwined. In the strong-coupling limit, such…

强关联电子 · 物理学 2023-07-10 Lasse Gresista , Dominik Kiese , Simon Trebst , Michael M. Scherer

We present accurate ab initio and quantum scattering calculations on a prototypical hybrid ion-atom system Yb$^+$-Rb, recently suggested as a promising candidate for the experimental study of open quantum systems, quantum information…

原子物理 · 物理学 2016-09-29 Timur V. Tscherbul , Paul Brumer , Alexei A. Buchachenko

The valence flat bands in transition metal dichalcogenide (TMD) heterobilayers are shown to exhibit strong intralayer spin-orbit coupling. This is reflected in a simple tight-binding model with spin-dependent complex hoppings based on the…

介观与纳米尺度物理 · 物理学 2022-06-01 Louk Rademaker

We study cold atoms in an optical lattice with synthetic spin-orbit coupling in the Mott-insulator regime. We calculate the parameters of the corresponding tight-binding model using Peierls substitution and "localized Wannier states method"…

量子气体 · 物理学 2012-08-28 Juraj Radic , Andrea Di Ciolo , Kai Sun , Victor Galitski

The superfluid--Mott-insulator phase transition of ultracold spin-1 bosons with ferromagnetic and antiferromagnetic interactions in an optical lattice is theoretically investigated. Two counterpropagating linearly polarized laser beams with…

其他凝聚态物理 · 物理学 2007-05-23 K. V. Krutitsky , R. Graham

This review focuses on recent developments on studying synthetic spin-orbit (SO) coupling in ultracold atomic gases. Two types of SO coupling are discussed. One is Raman process induced coupling between spin and motion along one of the…

量子气体 · 物理学 2015-02-12 Hui Zhai

We propose coupling two internal atomic states using a pair of Raman beams operated in Laguerre-Gaussian laser modes with unequal phase windings. This generates a coupling between the atom's pseudo-spin and its orbital angular momentum. We…

量子气体 · 物理学 2015-03-26 Michael DeMarco , Han Pu

We investigate the ground-state properties of spin-orbit coupled Bose-Einstein condensates in spin-dependent optical lattices. The competition between the spin-orbit coupling strength and the depth of the optical lattice leads to a rich…

量子气体 · 物理学 2013-01-11 Wei Han , Suying Zhang , Wu-Ming Liu

The interaction between a particle's spin and momentum -- known as spin-orbit (SO) coupling -- is the cornerstone of modern spintronics. In Bose-Einsten condensates of ultracold atoms, SO coupling can be implemented and precisely controlled…

介观与纳米尺度物理 · 物理学 2026-03-17 Valeria A. Maslova , Nina S. Voronova

Time-reversal invariance plays a crucial role for many exotic quantum phases, particularly for topologically nontrivial states, in spin-orbit coupled electronic systems. Recently realized spin-orbit coupled cold-atom systems, however, lack…

量子气体 · 物理学 2018-06-26 Matthew Maisberger , Lin-Cheng Wang , Kuei Sun , Yong Xu , Chuanwei Zhang

We show how spin-orbit coupling and Berry phase can appear in two-dimensional optical lattices by coupling atoms' internal degrees of freedom to radiation. The Rashba Hamiltonian, a standard description of spin-orbit coupling for…

软凝聚态物质 · 物理学 2007-05-23 Artem M. Dudarev , Roberto B. Diener , Iacopo Carusotto , Qian Niu

Light-induced spin-orbit coupling is a flexible tool to study quantum magnetism with ultracold atoms. In this work we show that spin-orbit coupled Bose gases in a one-dimensional optical lattice can be mapped into a two-leg triangular…

量子气体 · 物理学 2020-07-09 Josep Cabedo , Joan Claramunt , Jordi Mompart , Verònica Ahufinger , Alessio Celi

We present a new model for the study of spin-orbit coupling in interacting quasi-one-dimensional systems and solve it exactly to find the spectral properties of such systems. We show that the combination of spin-orbit coupling and…

介观与纳米尺度物理 · 物理学 2009-10-31 A. V. Moroz , K. V. Samokhin , C. H. W. Barnes