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74 papers · 1 filter
Control of dynamical phase transitions and non-ergodic relaxation via spinor phases
J. O. Austin-Harris, P. Sigdel, C. Binegar +3
Utilizing ultracold spinor gases as large-scale, many-body quantum simulation platforms, we establish a toolbox for the precise control, characterization, and detection of nonequil…
Lattice-enabled detection of spin-dependent three-body interactions
C. Binegar, J. O. Austin-Harris, S. E. Begg +3
We present the experimental detection of coherent three-body interactions, often masked by stronger two-body effects, through nonequilibrium spin dynamics induced by controllably q…
Observation of Momentum Space Josephson Effects
Annesh Mukhopadhyay, Xi-Wang Luo, Colby Schimelfenig +4
The momentum space Josephson effect describes the supercurrent flow between weakly coupled Bose-Einstein condensates (BECs) at two discrete momentum states. Here, we experimentally…
Many-Body Anderson Metal-Insulator Transition using Kicked Quantum Gases
Jun Hui See Toh, Mengxin Du, Xinxin Tang +6
Understanding the interplay of interactions and disorder in quantum transport poses long-standing scientific challenges, with many-body quantum transport phenomena in high-dimensio…
Nonlinear dynamics in a synthetic momentum state lattice
Fangzhao Alex An, Bhuvanesh Sundar, Junpeng Hou +5
The scope of analog simulation in atomic, molecular, and optical systems has expanded greatly over the past decades. Recently, the idea of synthetic dimensions -- in which transpor…
Pseudo-Goldstone Excitations in a Striped Bose-Einstein Condensate
Guan-Qiang Li, Xi-Wang Luo, Junpeng Hou +1
Significant experimental progress has been made recently for observing long-sought supersolid-like states in Bose-Einstein condensates, where spatial translational symmetry is spon…
Spin-twisted Optical Lattices: Tunable Flat Bands and Larkin-Ovchinnikov Superfluids
Xi-Wang Luo, Chuanwei Zhang
Moiré superlattices in twisted bilayer graphene and transition-metal dichalcogenides have emerged as a powerful tool for engineering novel band structures and quantum phases of two…
Majorana corner pairs in a two-dimensional -wave cold atomic superfluid
Ya-Jie Wu, Xi-Wang Luo, Junpeng Hou +1
We propose a method to prepare Majorana pairs at the corners of imprinted defects on a two-dimensional cold atom optical lattice with -wave superfluid pairing. Different from pr…
Quantized Floquet topology with temporal noise
Christopher I. Timms, Lukas M. Sieberer, Michael H. Kolodrubetz
Time-periodic (Floquet) drive is a powerful method to engineer quantum phases of matter, including fundamentally non-equilibrium states that are impossible in static Hamiltonian sy…
Vortex-antivortex physics in shell-shaped Bose-Einstein condensates
Karmela Padavić, Kuei Sun, Courtney Lannert +1
Shell-shaped hollow Bose-Einstein condensates (BECs) exhibit behavior distinct from their filled counterparts and have recently attracted attention due to their potential realizati…
Tunable Flux through a Synthetic Hall Tube of Neutral Fermions
Xi-Wang Luo, Jing Zhang, Chuanwei Zhang
Hall tube with a tunable flux is an important geometry for studying quantum Hall physics, but its experimental realization in real space is still challenging. Here, we propose to r…
Robust Weyl points in a 1D superlattice with transverse spin-orbit coupling
Xi-Wang Luo, Chuanwei Zhang
Weyl points, synthetic magnetic monopoles in the 3D momentum space, are the key features of topological Weyl semimetals. The observation of Weyl points in ultracold atomic gases us…
Experimental realization of a non-magnetic one-way spin switch
M. E. Mossman, Junpeng Hou, Xi-Wang Luo +2
Controlling magnetism through non-magnetic means is highly desirable for future electronic devices, as such means typically have ultra-low power requirements and can provide cohere…
Quantum spiral spin-tensor magnetism
Xiaofan Zhou, Xi-Wang Luo, Gang Chen +2
The characterization of quantum magnetism in a large spin () system naturally involves both spin-vectors and -tensors. While certain types of spin-vector (e.g., ferromagnet…
Magnetic stripe soliton and localized stripe wave in spin-1 Bose-Einstein condensates
Li-Chen Zhao, Xi-Wang Luo, Chuanwei Zhang
The recent experimental realization of spin-orbit coupling for ultracold atomic gases opens a new avenue for engineering solitons with internal spatial structures through tuning at…
Spin current generation and relaxation in a quenched spin-orbit-coupled Bose-Einstein condensate
Chuan-Hsun Li, Chunlei Qu, Robert J. Niffenegger +9
Understanding the effects of spin-orbit coupling (SOC) and many-body interactions on spin transport is important in condensed matter physics and spintronics. This topic has been in…
Experimental realization of a superfluid stripe phase in a spin-orbit-coupled Bose-Einstein condensate enabled by momentum-space hopping
Thomas M. Bersano, Junpeng Hou, Sean Mossman +5
In the past few decades, the search for supersolid-like phases has attracted great attention in condensed matter and ultracold atom communities. Here we experimentally demonstrate…
Topological phases in pseudospin-1 Fermi gases with two-dimensional spin-orbit coupling
Junpeng Hou, Haiping Hu, Chuanwei Zhang
The recent experimental realization of spin-orbit (SO) coupling for ultracold bosons and fermions opens an exciting avenue for engineering quantum matter that may be challenging to…
Tunable spin-orbit coupling and magnetic superstripe phase in a BEC
Xi-Wang Luo, Chuanwei Zhang
Superstripe phases in Bose-Einstein condensates (BECs), possessing both crystalline structure and superfluidity, opens a new avenue for exploring exotic quantum matters---supersoli…
Rashba and Weyl spin-orbit coupling in an optical lattice clock
Xiaofan Zhou, Xi-Wang Luo, Gang Chen +2
Recent experimental realization of one-dimensional (1D) spin-orbit coupling (SOC) for ultracold alkaline-earth(-like) atoms in optical lattice clocks opens a new avenue for explori…
Spin-1 Topological Monopoles in Parameter Space of Ultracold Atoms
Haiping Hu, Chuanwei Zhang
Magnetic monopole, a hypothetical elementary particle with isolated magnetic pole, is crucial for the quantization of electric charge. In recent years, analogues of magnetic monopo…
Topological Mott Insulator with Bosonic Edge Modes in 1D Fermionic Superlattices
Haiping Hu, Shu Chen, Tian-Sheng Zeng +1
We investigate topological phase transitions driven by interaction and identify a novel topological Mott insulator state in one-dimensional fermionic optical superlattices through…
Static and dynamic properties of shell-shaped condensates
Kuei Sun, Karmela Padavić, Frances Yang +2
Static, dynamic, and topological properties of hollow systems differ from those that are fully filled as a result of the presence of a boundary associated with an inner surface. Ho…
Topological Floquet-Thouless energy pump
Michael H. Kolodrubetz, Frederik Nathan, Snir Gazit +2
We explore adiabatic pumping in the presence of periodic drive, finding a new phase in which the topologically quantized pumped quantity is energy rather than charge. The topologic…