300 citations · 2k across the 36 of their papers we have counts for
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Elementary excitations in a spin-orbit-coupled spin-1 Bose-Einstein condensate
Yuanyuan Chen, Hao Lyu, Yong Xu +1
While a spin-orbit-coupled spin-1 Bose-Einstein condensate has been experimentally observed, its elementary excitations remain unclear in the stripe phase. Here, we systematically…
Non-Hermitian Absorption Spectroscopy
Kai Li, Yong Xu
While non-Hermitian Hamiltonians have been experimentally realized in cold atom systems, it remains an outstanding open question of how to experimentally measure their complex ener…
Time-reversal-invariant spin-orbit-coupled bilayer Bose-Einstein Condensates
Matthew Maisberger, Lin-Cheng Wang, Kuei Sun +2
Time-reversal invariance plays a crucial role for many exotic quantum phases, particularly for topologically nontrivial states, in spin-orbit coupled electronic systems. Recently r…
Phase tunable Josephson junction and spontaneous mass current in a spin-orbit coupled Fermi superfluid
Lei Jiang, Yong Xu, Chuanwei Zhang
Atomtronics has the potential for engineering new types of functional devices, such as Josephson junctions (JJs). Previous studies have mainly focused on JJs whose ground states ha…
Dirac and Weyl Rings in Three Dimensional Cold Atom Optical Lattices
Yong Xu, Chuanwei Zhang
Recently three dimensional topological quantum materials with gapless energy spectra have attracted considerable interests in many branches of physics. Besides the celebrated examp…
Interacting spin-orbit-coupled spin-1 Bose-Einstein condensates
Kuei Sun, Chunlei Qu, Yong Xu +2
The recent experimental realization of spin-orbit (SO) coupling for spin-1 ultracold atoms opens an interesting avenue for exploring SO-coupling-related physics in large-spin syste…
Bright solitons in a 2D spin-orbit-coupled dipolar Bose-Einstein condensate
Yong Xu, Yongping Zhang, Chuanwei Zhang
We study a two-dimensional spin-orbit-coupled dipolar Bose-Einstein condensate with repulsive contact interactions by both the variational method and the imaginary time evolution o…
Gap Solitons in Spin-Orbit-Coupled Bose-Einstein Condensates in Optical Lattices
Yongping Zhang, Yong Xu, Thomas Busch
While different ways to realize spin-orbit coupling in Bose-Einstein condensates exist, not all are currently experimentally implementable. Here we present a detailed study of gap…
Structured Weyl Points in Spin-Orbit Coupled Fermionic Superfluids
Yong Xu, Fan Zhang, Chuanwei Zhang
We demonstrate that a Weyl point, widely examined in 3D Weyl semimetals and superfluids, can develop a pair of non-degenerate gapless spheres. Such a bouquet of two spheres is char…
Topological Fulde-Ferrell Superfluids of a Spin-Orbit Coupled Fermi Gas
Yong Xu, Chuanwei Zhang
Topological Fermi superfluids have played the central role in various fields of physics. However, all previous studies focus on the cases where Cooper pairs have zero center-of-mas…
Berezinskii-Kosterlitz-Thouless Phase Transition in 2D Spin-Orbit Coupled Fulde-Ferrell Superfluids
Yong Xu, Chuanwei Zhang
The experimental observation of traditional Zeeman-field induced Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superfluids has been hindered by various challenges, in particular, the req…
Dark Solitons with Majorana Fermions in Spin-Orbit-Coupled Fermi Gases
Yong Xu, Li Mao, Biao Wu +1
We show that a single dark soliton can exist in a spin-orbit-coupled Fermi gas with a high spin imbalance, where spin-orbit coupling favors uniform superfluids over non-uniform Ful…
Majorana fermions in quasi-1D and higher dimensional ultracold fermionic optical lattices
Chunlei Qu, Ming Gong, Yong Xu +2
We show that Majorana fermions (MFs) exist in two- and three-dimensional (2D,3D) fermionic optical lattices with strictly 1D spin-orbit coupling (SOC) which has already been realiz…
Anisotropic Weyl Fermions from Quasiparticle Excitation Spectrum of a 3D Fulde-Ferrell Superfluid
Yong Xu, Rui-Lin Chu, Chuanwei Zhang
Weyl fermions, first proposed for describing massless chiral Dirac fermions in particle physics, have not been observed yet in experiments. Recently, much effort has been devoted t…
Topological Superfluids with Finite Momentum Pairing and Majorana Fermions
Chunlei Qu, Zhen Zheng, Ming Gong +5
Majorana fermions, quantum particles that are their own anti-particles, are not only of fundamental importance in elementary particle physics and dark matter, but also building blo…
Competing superfluid orders in spin-orbit coupled fermionic cold atom optical lattices
Yong Xu, Chunlei Qu, Ming Gong +1
The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase, a superconducting state with non-zero total momentum Cooper pairs in a large magnetic field, was first predicted about 50 years a…
Structure of two-component Bose-Einstein condensates with respective vortex-antivortex superposition states
Linghua Wen, Yongjun Qiao, Yong Xu +1
We investigate the phase structure of two-component Bose-Einstein condensates (BECs) with repulsive intra- and interspecies interactions in the presence of respective vortex-antivo…
Stability of -orbital Bose-Einstein condensates in optical checkerboard and square lattices
Yong Xu, Zhu Chen, Hongwei Xiong +2
We investigate -orbital Bose-Einstein condensates in both the square and checkerboard lattice by numerically solving the Gross-Pitaevskii equation. The periodic potential for th…
Bright solitons in spin-orbit-coupled Bose-Einstein condensates
Yong Xu, Yongping Zhang, Biao Wu
We study bright solitons in a Bose-Einstein condensate with a spin-orbit coupling that has been realized experimentally. Both stationary bright solitons and moving bright solitons…