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20222026
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quant-ph2026

Drive-Only Interaction Engineering via Dynamical Freezing

Songbo Xie, Jiheng Duan, Sabre Kais

Freezing is usually used to suppress unwanted dynamics, but it can also be used to engineer interactions. We introduce freezing-induced interaction engineering, a drive-only contro…

quant-ph2026

Measuring and correcting nanosecond pulse distortions in quantum-dot spin qubits

Jiheng Duan, Fernando Torres-Leal, John M. Nichol

Gate-defined semiconductor quantum dots utilize fast electrical control to manipulate spin and charge states of individual electrons. Electrical pulse distortions can limit control…

quant-ph2025

Mitigating Residual Exchange Coupling in Resonant Singlet-Triplet Qubits

Jiheng Duan, Fernando Torres-Leal, John M. Nichol

We propose methods to mitigate single- and two-qubit control errors due to residual exchange coupling in systems of exchange-coupled resonant singlet-triplet qubits. Commensurate d…

quant-ph2023

Neural network based time-resolved state tomography of superconducting qubits

Ziyang You, Jiheng Duan, Wenhui Huang +4

Superconducting qubits have emerged as a premier platform for large-scale quantum computation, yet the fidelity of state readout is often hindered by random noise and crosstalk, es…

quant-ph2022

A quantum algorithm for finding collision-inducing disturbance vectors in SHA-1

Jiheng Duan, Minghui Li, Hou Ian

Modern cryptographic protocols rely on sophisticated hash functions to generate quasi-unique numbers that serve as signatures for user authentication and other security verificatio…