210 citations · 1.1k across the 38 of their papers we have counts for
37 papers · 1 filter
A scalable edge-pass Purcell filter for high-fidelity readout of superconducting qubits
Xudong Liao, Yuan Li, Sainan Huai +11
High-fidelity readout with strong Purcell protection of qubit coherence is essential for scalable superconducting quantum processors, yet the finite passband and sizable footprint…
Local Universality and Structural Certificates for Minimal Fixed-Depth Two-Qutrit Gate Decomposition
Yurui Liu, Ruoting Dou, Peng Xu +4
We study a dimension-saturating fixed-core ansatz in which four copies of a fixed, non-tunable two-qutrit core are interleaved with five adjustable local layers from $…
Probing Tensor Singularities and Their Euler-Class Descendants via Non-Abelian Quantum Geometry Measurement
Zhe Wang, Yan-Qing Zhu, Xinsheng Tan +5
We report the theoretical prediction and experimental observation of a new class of four-dimensional (4D) tensor singularities and their three-dimensional (3D) Euler-class descenda…
Breaking the scalability barrier via a vertical tunable coupler in 3D integrated transmon system
Xudong Liao, Shuyi Pan, Zhenxing Zhang +11
Scaling superconducting quantum processors beyond the constraints of monolithic planar architectures is essential for fault-tolerant quantum computation. Here we demonstrate a thre…
Information-Scrambling-Enhanced Quantum Sensing Beyond the Standard Quantum Limit
Yangyang Ge, Haoyu Zhou, Wen Zheng +16
Quantum sensing promises measurement precision beyond classical limits, but its practical realization is often hindered by decoherence and the challenges of generating and stabiliz…
Parametric phase modulation in superconducting circuits
Zhuang Ma, Xianke Li, Hongyi Shi +4
Parametric modulation, valued for its versatility, is widely employed in superconducting circuits for quantum simulations and high-fidelity two-qubit gates. Conventionally, the qub…
Frequency collisions in parametrically modulated superconducting circuits
Zhuang Ma, Peng Zhao, Xinsheng Tan +1
Superconducting circuits are a leading platform for scalable quantum computing, where parametric modulation is a widely used technique for implementing high-fidelity multi-qubit op…
Fast and Robust Remote Two-Qubit Gates on Distributed Qubits
Yunan Li, Xi Zhang, Weixin Zhang +4
Distributed quantum computing offers a potential solution to the complexity of superconducting chip hardware layouts and error correction algorithms. High-quality gates between dis…
Efficient Implementation of a Single-Qutrit Gate Set via Coherent Control
Xiang-Min Yu, Xiang Deng, Wen Zheng +15
Qutrits offer the potential for enhanced quantum computation by exploiting an enlarged Hilbert space. However, the synthesis of high-fidelity and fast qutrit gates, particularly fo…
Variational quantum algorithms with invariant probabilistic error cancellation on noisy quantum processors
Yulin Chi, Hongyi Shi, Wen Zheng +8
In the noisy intermediate-scale quantum era, emerging classical-quantum hybrid optimization algorithms, such as variational quantum algorithms (VQAs), can leverage the unique chara…
Tunable Hybrid-Mode Coupler Enabling Strong Interactions between Transmons at Centimeter-Scale Distance
Jianwen Xu, Xiang Deng, Wen Zheng +12
The transmon, a fabrication-friendly superconducting qubit, remains a leading candidate for scalable quantum computing. Recent advances in tunable couplers have accelerated progres…
Long-Range Interaction via Resonator-Induced Phase in Superconducting Qubits
Xiang Deng, Wen Zheng, Xudong Liao +8
Superconducting quantum computing emerges as one of leading candidates for achieving quantum advantage. However, a prevailing challenge is the coding overhead due to limited quantu…
Exploring Parity Magnetic Effects through Experimental Simulation with Superconducting Qubits
Yu Zhang, Yan-Qing Zhu, Jianwen Xu +8
We present the successful realization of four-dimensional (4D) semimetal bands featuring tensor monopoles, achieved using superconducting quantum circuits. Our experiment involves…
Experimental Implementation of Noncyclic and Nonadiabatic Geometric Quantum Gates in a Superconducting Circuit
Zhuang Ma, Jianwen Xu, Tao Chen +6
Quantum gates based on geometric phases possess intrinsic noise-resilience features and therefore attract much attention. However, the implementations of previous geometric quantum…
Measuring quantum geometric tensor of non-Abelian system in superconducting circuits
Wen Zheng, Jianwen Xu, Zhuang Ma +11
Topology played an important role in physics research during the last few decades. In particular, the quantum geometric tensor that provides local information about topological pro…
Cancelling microwave crosstalk with fixed-frequency qubits
Wuerkaixi Nuerbolati, Zhikun Han, Ji Chu +5
Scalable quantum information processing requires that modular gate operations can be executed in parallel. The presence of crosstalk decreases the individual addressability, causin…
Accelerated quantum adiabatic transfer in superconducting qubits
Wen Zheng, Jianwen Xu, Zhimin Wang +4
Quantum adiabatic transfer is widely used in quantum computation and quantum simulation. However, the transfer speed is limited by the quantum adiabatic approximation condition, wh…
Optimal control of stimulated Raman adiabatic passage in a superconducting qudit
Wen Zheng, Yu Zhang, Yuqian Dong +9
Stimulated Raman adiabatic passage (STIRAP) is a widely used protocol to realize high-fidelity and robust quantum control in various quantum systems. However, further application o…
Suppression of static ZZ interaction in an all-transmon quantum processor
Peng Zhao, Dong Lan, Peng Xu +5
The superconducting transmon qubit is currently a leading qubit modality for quantum computing, but gate performance in quantum processor with transmons is often insufficient to su…
High-fidelity, high-scalability two-qubit gate scheme for superconducting qubits
Yuan Xu, Ji Chu, Jiahao Yuan +9
High-quality two-qubit gate operations are crucial for scalable quantum information processing. Often, the gate fidelity is compromised when the system becomes more integrated. The…
Experimental Observation of Tensor Monopoles with a Superconducting Qudit
Xinsheng Tan, Dan-Wei Zhang, Wen Zheng +9
Monopoles play a center role in gauge theories and topological matter. There are two fundamental types of monopoles in physics: vector monopoles and tensor monopoles. Examples of v…
Experimental Realization of Universal Time-optimal non-Abelian Geometric Gates
Zhikun Han, Yuqian Dong, Baojie Liu +14
Based on the geometrical nature of quantum phases, non-adiabatic holonomic quantum control (NHQC) has become a standard technique for enhancing robustness in constructing quantum g…
Simultaneously exciting two atoms with photon-mediated Raman interaction
Peng Zhao, Xinsheng Tan, Haifeng Yu +2
We propose an approach to simultaneously excite two atoms by using cavity-assisted Raman process in combination with cavity photon-mediated interaction. The system consists of a tw…
Switchable next-nearest-neighbor coupling for controlled two-qubit operations
Peng Zhao, Peng Xu, Dong Lan +3
In a superconducting quantum processor with nearest neighbor coupling, the dispersive interaction between adjacent qubits can result in an effective next-nearest-neighbor coupling…