153 citations · 2k across the 42 of their papers we have counts for
13 papers · 1 filter
Dynamical quantum phase transitions in a spinor Bose-Einstein condensate and criticality enhanced quantum sensing
Lu Zhou, Jia Kong, Zhihao Lan +1
Quantum phase transitions universally exist in the ground and excited states of quantum many-body systems, and they have a close relationship with the nonequilibrium dynamical phas…
Stückelberg interferometry using spin-orbit-coupled cold atoms in an optical lattice
Shuang Liang, Zheng-Chun Li, Weiping Zhang +2
Time evolution of spin-orbit-coupled cold atoms in an optical lattice is studied, with a two-band energy spectrum having two avoided crossings. A force is applied such that the ato…
Nonlinear Floquet dynamics of spinor condensates in an optical cavity: Cavity-amplified parametric resonance
Zheng-Chun Li, Qi-Hui Jiang, Zhihao Lan +2
We investigate Floquet dynamics of a cavity-spinor Bose-Einstein condensate coupling system via periodic modulation of the cavity pump laser. Parametric resonances are predicted an…
Quantum melting of two-component Rydberg crystals
Zhihao Lan, Weibin Li, Igor Lesanovsky
We investigate the quantum melting of one dimensional crystals that are realized in an atomic lattice in which ground state atoms are laser excited to two Rydberg states. We focus…
Emergent devil's staircase without particle-hole symmetry in Rydberg quantum gases with competing attractive and repulsive interactions
Zhihao Lan, Jiří Minář, Emanuele Levi +2
The devil's staircase is a fractal structure that characterizes the ground state of one-dimensional classical lattice gases with long-range repulsive convex interactions. Its plate…
Excitonic states of an impurity in a Fermi gas
Zhihao Lan, Carlos Lobo
We study excitonic states of an atomic impurity in a Fermi gas, i.e., bound states consisting of the impurity and a hole. Previous studies considered bound states of the impurity w…
Goos-Hänchen shifts in spin-orbit-coupled cold atoms
Lu Zhou, Jie-Li Qin, Zhihao Lan +2
We consider a matter wave packet of cold atom gas impinging upon a step potential created by the optical light field. In the presence of spin-orbit (SO) coupling, the atomic eigens…
A single impurity in an ideal atomic Fermi gas: current understanding and some open problems
Zhihao Lan, Carlos Lobo
We briefly review some current theoretical and experimental aspects of the problem of a single spinless impurity in a 3D polarised atomic Fermi gas at zero temperature where the in…
The Raman dressed spin-1 spin-orbit coupled quantum gas
Zhihao Lan, Patrik Ohberg
The recently realized spin-orbit coupled quantum gases (Y.-J Lin {\it et al}., Nature 471, 83-86 (2011); P. Wang {\it et al}., PRL 109, 095301 (2012); L. W. Cheuk {\it et al}., PRL…
Optical lattices with large scattering length: Using few-body physics to simulate an electron-phonon system
Zhihao Lan, Carlos Lobo
We propose to go beyond the usual Hubbard model description of atoms in optical lattices and show how few-body physics can be used to simulate many-body phenomena, e.g., an electro…
Quasiparticle lifetime in ultracold fermionic mixtures with density and mass imbalance
Zhihao Lan, Georg M. Bruun, Carlos Lobo
We show that atomic Fermi mixtures with density and mass imbalance exhibit a rich diversity of scaling laws for the quasiparticle decay rate beyond the quadratic energy and tempera…
Coexistence of spin-1/2 and spin-1 Dirac-Weyl fermions in the edge-centered honeycomb lattice
Zhihao Lan, Nathan Goldman, Patrik Ohberg
We investigate the properties of an edge-centered honeycomb lattice, and show that this lattice features both spin-1/2 and spin-1 Dirac-Weyl fermions at different filling fractions…
Dirac-Weyl fermions with arbitrary spin in two-dimensional optical superlattices
Z. Lan, N. Goldman, A. Bermudez +2
Dirac-Weyl fermions are massless relativistic particles with a well-defined helicity which arise in the context of high-energy physics. Here we propose a quantum simulation of thes…