148 citations · 524 across the 18 of their papers we have counts for
18 papers
Localization behavior in a Hermitian and non-Hermitian Raman lattice
Entong Zhao, Yu-Jun Liu, Ka Kwan Pak +4
We propose a flexible Raman lattice system for alkaline-earth-like atoms to theoretically investigate localization behaviors in a quasi-periodic lattice with controllable non-Hermi…
Third-Order Exceptional Point in Non-Hermitian Spin-Orbit-Coupled cold atoms
Yu-Jun Liu, Ka Kwan Pak, Peng Ren +4
Exceptional points (EPs) has seen substantial advances in both experiment and theory. However, in quantum systems, higher-order exceptional points remain of great interest and poss…
Thermodynamics of Spin-Imbalanced Fermi Gases with SU(N) Symmetric Interaction
Chengdong He, Xin-Yuan Gao, Ka Kwan Pak +6
Thermodynamics of degenerate Fermi gases has been extensively studied through various aspects such as Pauli blocking effects, collective modes, BCS superfluidity, and more. Despite…
Multi-reservoir enhanced loading of tweezer atom arrays
Xu Yan, Chengdong He, Kai Wen +4
We introduce a species-independent method for improved loading into a single-atom optical tweezer array, utilizing iterative loading with multiple reservoir tweezers. Demonstrated…
Complete Interband Transitions for Non-Hermitian Spin-Orbit-Coupled Cold-Atom Systems
Dong Liu, Zejian Ren, Wai Chun Wong +5
Recently, synthetic spin-orbit coupling has been introduced into cold-atom systems for more flexible control of the Hamiltonian, which was further made time-varying through two-pho…
Creation of a tweezer array for cold atoms utilizing a generative neural network
Zejian Ren, Xu Yan, Kai Wen +4
Optical tweezers have become essential tools for dynamically manipulating objects, ranging from microspheres or biological molecules to neutral atoms. In this study, we demonstrate…
Two-dimensional non-Hermitian skin effect in an ultracold Fermi gas
Entong Zhao, Zhiyuan Wang, Chengdong He +6
The concept of non-Hermiticity has expanded the understanding of band topology leading to the emergence of counter-intuitive phenomena. One example is the non-Hermitian skin effect…
Observing a topological phase transition with deep neural networks from experimental images of ultracold atoms
Entong Zhao, Ting Hin Mak, Chengdong He +4
Although classifying topological quantum phases have attracted great interests, the absence of local order parameter generically makes it challenging to detect a topological phase…
Defect-induced edge ferromagnetism and fractional spin excitations of the SU(4) -flux Hubbard model on honeycomb lattice
Yang Xie, Cheng-Ping He, Zhao-Yang Dong +1
Recently, a SU(4) -flux Hubbard model on the honeycomb lattice has been proposed to study the spin-orbit excitations of -ZrCl [Phys.~Rev.~Lett. 121.097201~(2017)]. Based…
Chiral control of quantum states in non-Hermitian spin-orbit-coupled fermions
Zejian Ren, Dong Liu, Entong Zhao +4
Spin-orbit coupling is an essential mechanism underlying quantum phenomena such as the spin Hall effect and topological insulators. It has been widely studied in well-isolated Herm…
Heuristic machinery for thermodynamic studies of SU(N) fermions with neural networks
Entong Zhao, Jeongwon Lee, Chengdong He +4
The power of machine learning (ML) provides the possibility of analyzing experimental measurements with an unprecedented sensitivity. However, it still remains challenging to probe…
Effective statistical fringe removal algorithm for high-sensitivity imaging of ultracold atoms
Bo Song, Chengdong He, Zejian Ren +3
High-sensitivity imaging of ultracold atoms is often challenging when interference patterns are imprinted on the imaging light. Such image noises result in low signal-to-noise rati…
Evidence for Bosonization in a three-dimensional gas of SU() fermions
Bo Song, Yangqian Yan, Chengdong He +3
Blurring the boundary between bosons and fermions lies at the heart of a wide range of intriguing quantum phenomena in multiple disciplines, ranging from condensed matter physics a…
Collective excitations in two-dimensional SU() Fermi gases with tunable spin
Chengdong He, Zejian Ren, Bo Song +5
We measure collective excitations of a harmonically trapped two-dimensional (2D) SU() Fermi gas of Yb confined to a stack of layers formed by a one-dimensional optical l…
Collective dipole oscillations of a spin-orbit coupled Fermi gas
Shanchao Zhang, Chengdong He, Elnur Hajiyev +3
The collective dipole mode is induced and measured in a spin-orbit (SO) coupled degenerate Fermi gas of Yb atoms. Using a differential optical Stark shift, we split the deg…
Observation of nodal-line semimetal with ultracold fermions in an optical lattice
Bo Song, Chengdong He, Sen Niu +4
Observation of topological phases beyond two-dimension (2D) has been an open challenge for ultracold atoms. Here, we realize for the first time a 3D spin-orbit coupled nodal-line s…
Observation of symmetry-protected topological band with ultracold fermions
Bo Song, Long Zhang, Chengdong He +5
Symmetry plays a fundamental role in understanding complex quantum matter, particularly in classifying topological quantum phases, which have attracted great interests in the recen…
Spin-orbit coupled two-electron Fermi gases of ytterbium atoms
Bo Song, Chengdong He, Shanchao Zhang +4
We demonstrate all-optical implementation of spin-orbit coupling (SOC) in a two-electron Fermi gas of Yb atoms by coupling two hyperfine ground states with a narrow optical…