1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- City University of Hong KongHK108 papers
- University of Hong KongHK37 papers
- Shandong UniversityCN27 papers
- Hong Kong University of Science and TechnologyHK20 papers
- Chinese Academy of SciencesCN17 papers
- Wuhan UniversityCN14 papers
- Peking UniversityCN11 papers
- University of Chinese Academy of SciencesCN10 papers
- Suzhou Research InstituteCN9 papers
- Southern University of Science and TechnologyCN8 papers
- Tianjin UniversityCN8 papers
- Institute of PhysicsPL7 papers
22 papers · 1 filter
Asymmetric real topology of conduction and valence bands
J. X. Dai, Chen Zhang, Y. X. Zhao
Previously, it was believed that conduction and valence bands exhibit a symmetry: They possess opposite topological invariants (e.g., the Chern numbers of conduction and valence ba…
Observation of liquid-solid transition of nanoconfined water at ambient temperature
Wentian Zheng, Shichen Zhang, Jian Jiang +8
Nanoconfined water plays an indispensable role in various phenomena in biology, chemistry, and engineering. It exhibits many abnormal properties compared to bulk water, especially…
Exploring Entanglement Spectrum and Phase Diagram in multi-electron Quantum Dot Chains
Guanjie He, Xin Wang
We investigate the entanglement properties in semiconductor quantum dot systems modeled by extended Hubbard model, focusing on the impact of potential energy variations and electro…
Projective Spacetime Symmetry of Spacetime Crystals
Zheng Zhang, Z. Y. Chen, Y. X. Zhao
Wigner's seminal work on the Poincaré group revealed one of the fundamental principles of quantum theory: symmetry groups are projectively represented. The condensed-matter counter…
Sign-switching of superexchange mediated by few electrons under non-uniform magnetic field
Guo Xuan Chan, Xin Wang
Long range interaction between distant spins is an important building block for the realization of large quantum-dot network in which couplings between pairs of spins can be select…
Theory on electron-phonon spin dehphasing in GaAs multi-electron double quantum dots
Guanjie He, Guo Xuan Chan, Xin Wang
Recent studies reveal that a double-quantum-dot system hosting more than two electrons may be superior in certain aspects as compared to the traditional case in which only two elec…
Universal control of superexchange in linear triple quantum dots with an empty mediator
Guo Xuan Chan, Peihao Huang, Xin Wang
Superexchange is one of the vital resources to realize long-range interaction between distant spins for large-scale quantum computing. Recent experiments have demonstrated coherent…
Microscopic theory on magnetic-field-tuned sweet spot of exchange interactions in multielectron quantum-dot systems
Guo Xuan Chan, Xin Wang
The exchange interaction in a singlet-triplet qubit defined by two-electron states in the double-quantum-dot system ("two-electron singlet-triplet qubit") typically varies monotoni…
Robust entangling gate for capacitively coupled few-electron singlet-triplet qubits
Guo Xuan Chan, Xin Wang
The search of a sweet spot, locus in qubit parameters where quantum control is first-order insensitive to noises, is key to achieve high-fidelity quantum gates. Efforts to search f…
Band topology of pseudo-Hermitian phases through tensor Berry connections and quantum metric
Yan-Qing Zhu, Wen Zheng, Shi-Liang Zhu +1
Among non-Hermitian systems, pseudo-Hermitian phases represent a special class of physical models characterized by real energy spectra and by the absence of non-Hermitian skin effe…
Charge noise suppression in capacitively coupled singlet-triplet spin qubits under magnetic field
Guo Xuan Chan, Jason P. Kestner, Xin Wang
Charge noise is the main hurdle preventing high-fidelity operation, in particular that of two-qubit gates, of semiconductor-quantum-dot-based spin qubits. While certain sweet spots…
Valley filtering effect of phonons in graphene with a grain boundary
Xiaobin Chen, Yong Xu, Jian Wang +1
Due to their possibility to encode information and realize low-energy-consumption quantum devices, control and manipulation of the valley degree of freedom have been widely studied…
S-type Negative Differential Resistance in Semiconducting Transition-Metal Dichalcogenides
Miao Wang, Chengyu Wang, Chenchen Wu +5
Current-controlled (also known as "S-type") negative differential resistance (NDR) is of crucial importance to many emerging applications including neuromorphic computing and high-…
Suppression of leakage for a charge quadrupole qubit in triangular geometry
Guo Xuan Chan, Xin Wang
We present a simple yet effective strategy to suppress the leakage in the charge quadrupole qubit system by having the dots in a triangle as opposed to the linear geometry original…
Minimal Non-orthogonal Gate Decomposition for Qubits with Limited Control
Xiao-Ming Zhang, Jianan Li, Xin Wang +1
In quantum control theory, a question of fundamental and practical interest is how an arbitrary unitary transformation can be decomposed into minimum number of elementary rotations…
Tunable charge qubit based on barrier-controlled triple quantum dots
Xu-Chen Yang, Guo Xuan Chan, Xin Wang
We present a theoretical proposal of a tunable charge qubit, hosted in triple quantum dots. The manipulation is solely performed by changing the heights of the two potential barrie…
Automatic spin-chain learning to explore the quantum speed limit
Xiao-Ming Zhang, Zi-Wei Cui, Xin Wang +1
One of the ambitious goals of artificial intelligence is to build a machine that outperforms human intelligence, even if limited knowledge and data are provided. Reinforcement Lear…
Leakage and sweet spots in triple-quantum-dot spin qubits: A molecular-orbital study
Chengxian Zhang, Xu-Chen Yang, Xin Wang
A triple-quantum-dot system can be operated as either an exchange-only qubit or a resonant-exchange qubit. While it is generally believed that the decisive advantage of the resonan…
Fast pulse sequences for dynamically corrected gates in single-triplet qubits
Robert E. Throckmorton, Chengxian Zhang, Xu-Chen Yang +3
We present a set of experimentally feasible pulse sequences that implement any single-qubit gate on a singlet-triplet spin qubit and demonstrate that these new sequences are up to…
Magic angle for barrier-controlled double quantum dots
Xu-Chen Yang, Xin Wang
We show that the exchange interaction of a singlet-triplet spin qubit confined in double quantum dots, when being controlled by the barrier method, is insensitive to a charged impu…
Valley Seebeck effect in gate tunable zigzag graphene nanoribbons
Zhizhou Yu, Fuming Xu, Jian Wang
We propose, for the first time, a valley Seebeck effect in gate tunable zigzag graphene nanoribbons as a result of the interplay between thermal gradient and valleytronics. A pure…
Randomized benchmarking of barrier versus tilt control of a singlet-triplet qubit
Chengxian Zhang, Robert E. Throckmorton, Xu-Chen Yang +3
Decoherence due to charge noise is one of the central challenges in using spin qubits in semiconductor quantum dots as a platform for quantum information processing. Recently, it h…