activity
20242026
collaborators

6 papers

quant-ph2026

Distinguishing types of correlated errors in superconducting qubits

Hannah P. Binney, H. Douglas Pinckney, Kate Azar +15

Errors in superconducting qubits that are correlated in time and space can pose problems for quantum error correction codes. Radiation from cosmic and terrestrial sources can incre…

quant-ph2026

Characterization of Radiation-Induced Errors in Superconducting Qubits Protected with Various Gap-Engineering Strategies

H. Douglas Pinckney, Thomas McJunkin, Alan W. Hunt +26

Impacts from high-energy particles cause correlated errors in superconducting qubits by increasing the quasiparticle density in the vicinity of the Josephson junctions (JJs). Such…

quant-ph2025

Frequency- and Amplitude-Modulated Gates for Universal Quantum Control

Qi Ding, Shoumik Chowdhury, Agustin Di Paolo +4

Achieving high-fidelity single- and two-qubit gates is essential for executing arbitrary digital quantum algorithms and for building error-corrected quantum computers. We propose a…

quant-ph2025

ZZ-Free Two-Transmon CZ Gate Mediated by a Fluxonium Coupler

Junyoung An, Helin Zhang, Qi Ding +19

Eliminating residual ZZ interactions in a two-qubit system is essential for reducing coherent errors during quantum operations. In a superconducting circuit platform, coupling two…

quant-ph2025

Pulse Design of Baseband Flux Control for Adiabatic Controlled-Phase Gates in Superconducting Circuits

Qi Ding, Alan V. Oppenheim, Petros T. Boufounos +4

Despite progress towards achieving low error rates with superconducting qubits, error-prone two-qubit gates remain a bottleneck for realizing large-scale quantum computers. Therefo…

quant-ph2024

Qplacer: Frequency-Aware Component Placement for Superconducting Quantum Computers

Junyao Zhang, Hanrui Wang, Qi Ding +7

Noisy Intermediate-Scale Quantum (NISQ) computers face a critical limitation in qubit numbers, hindering their progression towards large-scale and fault-tolerant quantum computing.…