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
32 papers · 1 filter
Enhancing Circuit Fidelity in Transmon Qubit Rings via Operation Duration Tuning under Strong Connectivity Noise
Quan Fu, Xin Wang, Rui Xiong
Superconducting transmon qubits are a promising platform for quantum computation, yet they face significant fidelity degradation due to connectivity noise, particularly in the inte…
Compact non-degenerate entangled-photon source and near-infrared-to-telecom quantum teleportation
Xu-Jie Peng, Ling-Xuan Kong, He Lu
The polarization-entangled photon source (PEPS) at non-degenerated wavelengths is pivotal to connect quantum systems working at different wavelengths, with the assistance of quantu…
Jenga-Krotov algorithm: Efficient compilation of multi-qubit gates for exchange-only qubits
Jiahao Wu, Guanjie He, Wenyuan Zhuo +2
Exchange-only (EO) qubits, implemented in triple-quantum-dot systems, offer a compelling platform for scalable semiconductor-based quantum computing by enabling universal control t…
Photon-resolved Floquet theory approach to spectroscopic quantum sensing
Georg Engelhardt, Konstantin Dorfman, Zhedong Zhang
Spectroscopic methods play a vital role in quantum sensing, which uses the quantized nature of atoms or molecules to reach astonishing precision for sensing of, e.g., electric or m…
Hamiltonian Learning via Inverse Physics-Informed Neural Networks
Jie Liu, Xin Wang
Hamiltonian learning (HL), enabling precise estimation of system parameters and underlying dynamics, plays a critical role in characterizing quantum systems. However, conventional…
Exceptional deficiency of non-Hermitian systems
Zhen Li, Xulong Wang, Rundong Cai +5
Exceptional points (EPs) are non-Hermitian singularities associated with the coalescence of individual eigenvectors accompanied by the degeneracy of their complex energies. Here, w…
Optimizing Quantum Transformation Matrices: A Block Decomposition Approach for Efficient Gate Reduction
Lai Kin Man, Xin Wang
This paper introduces an algorithm designed to approximate quantum transformation matrix with a restricted number of gates by using the block decomposition technique. Addressing ch…
Efficient generation of broadband photon pairs in shallow-etched lithium niobate nanowaveguide
Xiao-Xu Fang, Leiran Wang, He Lu
We design and fabricate shallow-etched periodically poled lithium niobate waveguide to realize highly-efficient broadband spontaneous parametric down-conversion~(SPDC) on nanophoto…
Group Sparse Matrix Optimization for Efficient Quantum State Transformation
Lai Kin Man, Xin Wang
Finding ways to transform a quantum state to another is fundamental to quantum information processing. In this paper, we apply the sparse matrix approach to the quantum state trans…
Decoherence in Exchange-Coupled Quantum Spin Qubit Systems: Impact of Multiqubit Interactions and Geometric Connectivity
Quan Fu, Jiahao Wu, Xin Wang
We investigate the impact of different connectivities on the decoherence time in quantum systems under quasi-static Heisenberg noise. We considered three types of elementary units,…
Experimental virtual distillation of entanglement and coherence
Ting Zhang, Yukun Zhang, Lu Liu +4
Noise is in general inevitable and detrimental to practical and useful quantum communication and computation. Under the resource theory framework, resource distillation serves as a…
Experimental distillation of tripartite quantum steering with an optimal local filtering operation
Qian-Xi Zhang, Xiao-Xu Fang, He Lu
Multipartite Einstein-Podolsky-Rosen~(EPR) steering admits multipartite entanglement in the presence of uncharacterized verifiers, enabling practical applications in semi-device-in…
Quantification of Entanglement and Coherence with Purity Detection
Ting Zhang, Graeme Smith, John A. Smolin +7
Entanglement and coherence are fundamental properties of quantum systems, promising to power near future quantum technologies, such as quantum computation, quantum communication an…
Efficient Characterizations of Multiphoton States with an Ultra-thin Optical Device
Kui An, Zilei Liu, Ting Zhang +7
Metasurface enables the generation and manipulation of multiphoton entanglement with flat optics, providing a more efficient platform for large-scale photonic quantum information p…
A Solvable Model for Discrete Time Crystal Enforced by Nonsymmorphic Dynamical Symmetry
Zi-Ang Hu, Bo Fu, Xiao Li +1
Discrete time crystal is a class of nonequilibrium quantum systems exhibiting subharmonic responses to external periodic driving. Here we propose a class of discrete time crystals…
Multidimensional Coherent Spectroscopy of Molecular Polaritons: Langevin Approach
Zhedong Zhang, Xiaoyu Nie, Dangyuan Lei +1
We present a microscopic theory for nonlinear optical spectroscopy of N molecules in an optical cavity. A quantum Langevin analytical expression is derived for the time- and freque…
Maximal coin-position entanglement generation in a quantum walk for the third step and beyond regardless of the initial state
Xiao-Xu Fang, Kui An, Bai-Tao Zhang +2
We study maximal coin-position entanglement generation via a discrete-time quantum walk, in which the coin operation is randomly selected from one of two coin operators set at each…
Coupling two charge qubits via a superconducting resonator operating in the resonant and dispersive regimes
Chengxian Zhang, Guo Xuan Chan, Xin Wang +1
A key challenge for semiconductor quantum-dot charge qubits is the realization of long-range qubit coupling and performing high-fidelity gates based on it. Here, we describe a new…
Generalizable control for multiparameter quantum metrology
Han Xu, Lingna Wang, Haidong Yuan +1
Quantum control can be employed in quantum metrology to improve the precision limit for the estimation of unknown parameters. The optimal control, however, typically depends on the…
Efficient verification of continuous-variable quantum states and devices without assuming identical and independent operations
Ya-Dong Wu, Ge Bai, Giulio Chiribella +1
Continuous-variable quantum information, encoded into infinite-dimensional quantum systems, is a promising platform for the realization of many quantum information protocols, inclu…
Generic detection-based error-mitigation using quantum autoencoders
Xiao-Ming Zhang, Weicheng Kong, Muhammad Usman Farooq +3
Efficient error-mitigation techniques demanding minimal resources is key to quantum information processing. We propose a generic protocol to mitigate quantum errors using detection…
Implementation of geometric quantum gates on microwave-driven semiconductor charge qubits
Chengxian Zhang, Tao Chen, Xin Wang +1
A semiconductor-based charge qubit, confined in double quantum dots, can be a platform to implement quantum computing. However, it suffers severely from charge noises. Here, we pro…
High-fidelity geometric gate for silicon-based spin qubits
Chengxian Zhang, Tao Chen, Sai Li +2
High-fidelity manipulation is the key for the physical realization of fault-tolerant quantum computation. Here, we present a protocol to realize universal nonadiabatic geometric ga…
Generalizable control for quantum parameter estimation through reinforcement learning
Han Xu, Junning Li, Liqiang Liu +3
Measurement and estimation of parameters are essential for science and engineering, where one of the main quests is to find systematic schemes that can achieve high precision. Whil…