Author

Wibe A. de Jong

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Preprint Sep 2026

Efficient Calculation of Equilibrium Correlation Functions

A majority of measurable dynamic quantities of a physical system is described as an equilibrium correlation function of the form $G_{AB}(t-t') = \left$, where $t'$ represents the impact time and $t$ represents the response time. Conventional quantum algorithms to compute such quantities via Hamiltonian simulation such...

Yi-Zhi Shen, R. Van Beeumen, Wibe A. de Jong et al. · 0 citations

Preprint Oct 2026

$T$-efficient unitary synthesis via block-sparse Hamiltonian simulation

We construct Clifford+$T$ circuits implementing arbitrary $n$-qubit unitaries with worst-case $T$-count $\widetilde{O}(N^{8/7})$ at constant operator-norm error, where $N=2^n$, improving the previous exponent $5/4$. The construction uses $\widetilde{O}(N^{6/7})$ clean ancillas. The main idea is to reduce the data addre...

Diyi Liu, Shu-Chen Zhu, Wibe A. de Jong et al. · 0 citations