8 papers
Non-Local and Non-Markovian Effects of a Microscopic Two-Level Defect in Superconducting Quantum Circuits
Yang Gao, Yujia Zhang, Huikai Xu +12
Microscopic two-level systems (TLS) -- ubiquitous atomic-scale defects in solid-state quantum devices -- are a dominant source of qubit decoherence, yet their role is often conside…
Characterizing charge-parity detection based on an offset-charge-tunable transmon qubit via randomized benchmarking
Yao-Yao Jiang, Tang Su, Yuxiang Liu +11
Superconducting qubits are compelling platforms for charge-parity detection and, due to their theoretical sensitivity on the meV energy scale, hold promise for rare event searches.…
Dressed-state relaxation in coupled qubits as a source of two-qubit gate errors
Ruixia Wang, Jiayu Ding, Chenlu Wang +8
Understanding error mechanisms in two-qubit gate operations is essential for building high-fidelity quantum processors. While prior studies predominantly treat dephasing noise as e…
Suppressing spurious transitions using spectrally balanced pulse
Ruixia Wang, Yaqing Feng, Yujia Zhang +10
Achieving precise control over quantum systems presents a significant challenge, especially in many-body setups, where residual couplings and unintended transitions undermine the a…
Efficient Implementation of Arbitrary Two-Qubit Gates via Unified Control
Zhen Chen, Weiyang Liu, Yanjun Ma +16
The native gate set is fundamental to the performance of quantum devices, as it governs the accuracy of basic quantum operations and dictates the complexity of implementing quantum…
Multi-Purpose Architecture for Fast Reset and Protective Readout of Superconducting Qubits
Jiayu Ding, Yulong Li, He Wang +12
The ability to fast reset a qubit state is crucial for quantum information processing. However, to actively reset a qubit requires engineering a pathway to interact with a dissipat…