22 citations · 54 across the 15 of their papers we have counts for
18 papers
Thermal aliases in quantum noise: sampling clocks and pulse widths
Zi-Xuan Wang, Xiu-Hao Deng
Can collective quantum-noise measurements distinguish different mode temperatures from one common temperature when the coupling spectrum is unknown? For stationary Gaussian oscilla…
All-Microwave Multiqubit Gates
Guanqi Wang, Yao Song, Peng-Bo Li +1
Implementing high-fidelity multiqubit gates is critical for reducing circuit depth in near-term quantum processors and fault-tolerant architectures. However, realizing multiqubit i…
A Memory-Magic Exchange Law in Streaming Clifford+T Compilation
Jinze Yang, Yangyang Li, Xiu-Hao Deng
A phase that reaches a fault-tolerant processor in additive pieces can be remembered until the last piece arrives, or executed on arrival: the first option costs classical memory c…
Do Quantum AIs Dream in Paths? Path-Integral Slow Thinking through Grover Interference
Xiansheng Cai, Xiu-Hao Deng, Kun Chen
Reinforcement learning with verifiable rewards enables large language models to think slowly, but the same training can induce policy collapse: probability concentrates onto a few…
Robust CZ gate against flux line memory
Yao Song, Xiu-Hao Deng
High-fidelity CZ gates are central to superconducting quantum processors, but implementations based on flux tuning are still sensitive to pulse distortion. Conventional predistorti…
Measurement-Free Toric-Code Memory in Array Globally Controlled Rydberg Array
Han Wang, Yusheng Zhao, Xiuhao Deng +1
The central prerequisite of any fault-tolerant quantum architecture is a quantum memory: a block of encoded physical qubits whose logical state is actively preserved against noise…
Universal Robust Quantum Gates via Doubly Geometric Control
Hai Xu, Tao Chen, Junkai Zeng +5
Geometric quantum computation offers a potential route to fault-tolerant quantum information processing by exploiting the global nature of geometric phases. However, achieving cont…
Pareto Front Engineering of Dynamical Sweet Spots in Superconducting Qubits
Zhen Yang, Shan Jin, Yajie Hao +4
Operating superconducting qubits at dynamical sweet spots (DSSs) suppresses decoherence from low-frequency flux noise. A key open question is how long coherence can be extended und…
Enhanced Quantum Signal Control and Sensing Under Multicolored Noise via Generalized Filter Function Framework
Zhi-Da Zhang, Yao Song, Wen-Zheng Dong +1
We introduce a generalized filter-function framework that treats noise coupling strength as a tunable control parameter, enabling target noise suppression across user-defined frequ…
Non-Perturbative Geometric Framework for Single-Qubit Gates under Always-On Couplings
Junkai Zeng, Lin Chen, Xiu-Hao Deng
In qubit arrays with always-on couplings, single-qubit gates pose a control challenge often as demanding as entangling operations. The same interactions that enable two-qubit entan…
Smolyak algorithm assisted robust control for quantum systems with uncertainties
Zigui Zhang, Zibo Miao, Xiu-Hao Deng
Efficient and systematic numerical methods for robust control design are crucial in quantum systems due to inevitable uncertainties or disturbances. We propose a novel approach tha…
Weaving Complex Graph on simple low-dimensional qubit lattices
Yu-Hang Dang, Shyam Dhamapurkar, Xiao-Long Zhu +3
In quantum computing, the connectivity of qubits placed on two-dimensional chips limits the scalability and functionality of solid-state quantum computers. This paper presents two…
Integrated and DC-powered superconducting microcomb
Chen-Guang Wang, Wuyue Xu, Chong Li +21
Frequency combs, specialized laser sources emitting multiple equidistant frequency lines, have revolutionized science and technology with unprecedented precision and versatility. R…
Robust Quantum Gates against Correlated Noise in Integrated Quantum Chips
Kangyuan Yi, Yong-Ju Hai, Kai Luo +9
As quantum circuits become more integrated and complex, additional error sources that were previously insignificant start to emerge. Consequently, the fidelity of quantum gates ben…
Geometric correspondence of noisy quantum dynamics and universal robust quantum gates
Yong-Ju Hai, Junning Li, Junkai Zeng +1
Quantum information processing faces a significant hurdle: noise. Different noise sources induce varying errors in quantum operations depending on the underlying dynamics. To gain…
Observability of the scalar Aharonov-Bohm effect inside a 3D Faraday cage with time-varying exterior charges and masses
R. Y. Chiao, X. H. Deng, K. M. Sundqvist +5
In this paper we investigate the scalar Aharonov-Bohm (AB) effect in two of its forms, i.e., its electric form and its gravitational form. The standard form of the electric AB effe…
Protecting Superconducting Qubits with Universal Quantum Degeneracy Point
X. -H. Deng, Y. Hu, Lin Tian
Low-frequency noise can induce serious decoherence in superconducting qubits. Due to its diverse physical origin, such noise can couple with the qubits either as transverse or as l…
Universal Quantum Degeneracy Point for Superconducting Qubits
Xiu-Hao Deng, Yong Hu, Lin Tian
The quantum degeneracy point approach [D. Vion et al., Science 296, 886 (2002)] effectively protects superconducting qubits from low-frequency noise that couples with the qubits as…