483 citations · 1k across the 24 of their papers we have counts for
25 papers
Two-Dimensional Quantum Droplets in a Mixture of Bose-Einstein Condensates
Yue Zhang, Liangchao Chen, Wei Han +10
Quantum droplets represent a striking manifestation of beyond-mean-field physics, with properties that depend sensitively on dimensionality. Although quantum droplets have been exp…
Magnetic-Field-Calibration-Free Determination of the Hyperfine Constant in Ultracold Fermi gases of K
Yajing Yang, Biao Shan, Yuhang Zhao +8
Hyperfine constant is a key parameter of the hyperfine structure and underpins precision spectroscopy and metrology. In this Letter, we develop a magnetic-field-calibration-fre…
Experimental study of matter-wave four-wave mixing in K Bose-Einstein condensates with tunable interaction
Yue Zhang, Liangchao Chen, Zekui Wang +7
We experimentally investigate four-wave mixing (FWM) of matter waves in two geometric configurations in K Bose-Einstein condensates with the atomic interaction tuned via Fes…
Experimental study of magnetically insensitive transitions in ultracold Fermi gas of K
Biao Shan, Lianghui Huang, Yajing Yang +8
This paper presents an experimental study of microwave single-photon transitions that are magnetic-field-insensitive in degenerate Fermi gases of K. This contrasts with micr…
Topologically nontrivial and trivial flat bands via weak and strong interlayer coupling in twisted bilayer honeycomb optical lattices for ultracold atoms
Wenjie Sui, Wei Han, Zheng Vitto Han +2
In recent years, flat electronic bands in twisted bilayer graphene (TBG) have attracted significant attention due to their intriguing topological properties, extremely slow electro…
Observation of high partial-wave Feshbach resonances in K Bose-Einstein condensates
Yue Zhang, Liangchao Chen, Zekui Wang +6
We report the new observation of several high partial-wave (HPW) magnetic Feshbach resonances (FRs) in K atoms of the hyperfine substate . T…
Observation of quantized vortex in an atomic Bose-Einstein condensate at Dirac point with emergent spin-orbit coupling
Yunda Li, Wei Han, Zengming Meng +3
When two or more energy bands become degenerate at a singular point in the momentum space, such singularity, or ``Dirac points", gives rise to intriguing quantum phenomena as well…
Atomic Bose-Einstein condensate in a twisted-bilayer optical lattice
Zengming Meng, Liangwei Wang, Wei Han +6
Observation of strong correlations and superconductivity in twisted-bilayer-graphene have stimulated tremendous interest in fundamental and applied physics. In this system, the sup…
Experimental study of tune-out wavelengths for spin-dependent optical lattice in Rb Bose-Einstein condensation
Kai Wen, Zengming Meng, Liangwei Wang +4
We study the periodic potential of one-dimensional optical lattice originated from scalar shift and vector shift by manipulating the lattice polarizations. The ac Stark shift of op…
Photoassociation spectroscopy of weakly bound molecules near threshold by optical Bragg scattering in Bose-Einstein condensates
Khan Sadiq Nawaz, Liangchao Chen, Chengdong Mi +4
We report the high resolution photoassociation (PA) spectroscopy of a Bose-Einstein condensate (BEC) to excited molecular states near the dissociation limit of $5P_{1/2}…
Active Learning Approach to Optimization of Experimental Control
Yadong Wu, Zengming Meng, Kai Wen +3
In this work we present a general machine learning based scheme to optimize experimental control. The method utilizes the neural network to learn the relation between the control p…
Experimental realization of spin-tensor momentum coupling in ultracold Fermi gases
Donghao Li, Lianghui Huang, Peng Peng +5
We experimentally realize the spin-tensor momentum coupling (STMC) using the three ground Zeeman states coupled by three Raman laser beams in ultracold atomic system of K Fe…
Experimental generation of phase wraps for subwavelength phase structures in Bose-Einstein condensate with two-dimensional optical lattice
Kai Wen, Zengming Meng, Pengjun Wang +6
We report an experimental demonstration of engineering phase wraps for sub-wavelength structure in a Bose-Einstein condensate (BEC) with two-dimensional optical lattices. A short l…
Experimental observation of one-dimensional superradiance lattices in ultracold atoms
Liangchao Chen, Pengjun Wang, Zengming Meng +5
We measure the superradiant emission in a one-dimensional (1D) superradiance lattice (SL) in ultracold atoms. Resonantly excited to a superradiant state, the atoms are further coup…
Sub-Doppler laser cooling of 23Na in gray molasses on the D2 line
Zhenlian Shi, Pengjun Wang, Ziliang Li +3
We report on the efficient gray molasses cooling of sodium atoms using the optical transition at 589.1 nm. Thanks to the hyperfine split about 6 between the $|F'=2\rangl…
Universal Feature in Optical Control of a p-wave Feshbach Resonance
Peng Peng, Ren Zhang, Lianghui Huang +6
In this Letter we report the experimental results on optical control of a p-wave Feshbach resonance, by utilizing a laser driven bound-to-bound transition to shift the energy of cl…
Observation of Floquet band topology change in driven ultracold Fermi gases
Lianghui Huang, Peng Peng, Donghao Li +6
Periodic driving of a quantum system can significantly alter its energy bands and even change the band topology, opening a completely new avenue for engineering novel quantum matte…
Experimental study of balanced optical homodyne and heterodyne detection by controlling sideband modulation
Wei Li, Zengming Meng, Xudong Yu +1
We experimentally study optical homodyne and heterodyne detections with a same setup, which is flexible to manipulate the signal sideband modulation. When the modulation only gener…
Experimental realization of a two-dimensional synthetic spin-orbit coupling in ultracold Fermi gases
Lianghui Huang, Zengming Meng, Pengjun Wang +6
Spin-orbit coupling (SOC) is central to many physical phenomena, including fine structures of atomic spectra and quantum topological matters. Whereas SOC is in general fixed in a p…
Dissociation of Feshbach molecules via spin-orbit coupling in ultracold Fermi gases
Lianghui Huang, Pengjun Wang, Peng Peng +4
We study the dissociation of Feshbach molecules in ultracold Fermi gases with spin-orbit (SO) coupling. Since SO coupling can induce quantum transition between the Feshbach molecul…
Radio-Frequency Manipulation of Fano-Feshbach Resonances in an Ultracold Fermi Gas of K
Lianghui Huang, Pengjun Wang, B. P. Ruzic +5
Experimental control of magnetic Fano-Feshbach resonances in ultracold K Fermi gases, using radio-frequency (RF) fields, is demonstrated. Spectroscopic measurements are made…
Spin-Orbit Coupling Induced Coherent Production of Feshbach Molecules in a Degenerate Fermi Gas
Zhengkun Fu, Lianghui Huang, Zengming Meng +6
In this work we demonstrate a dynamic process in which SO coupling can coherently produce s-wave Feshbach molecules from a fully polarized Fermi gas, and can induce a coherent osci…
Optical control of a magnetic Feshbach resonance in ultracold Fermi gases
Zhengkun Fu, Pengjun Wang, Lianghui Huang +3
We use laser light near-resonant with a molecular bound-to-bound transition to control a magnetic Feshbach resonance in ultracold Fermi gases of K atoms. The spectrum of exc…
Radio-frequency spectroscopy of a strongly interacting spin-orbit coupled Fermi gas
Zhengkun Fu, Lianghui Huang, Zengming Meng +5
We investigate experimentally and theoretically radio-frequency spectroscopy and pairing of a spin-orbit-coupled Fermi gas of K atoms near a Feshbach resonance at $B_{0}=202…