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Author

Heng-Zhun Chen

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Preprint Oct 2026

Quantum Simulation of Non-Markovian Open Quantum Systems via Low-Rank Kernel Compression and Coupling Dilution

We present an error-controlled framework for the quantum simulation of non-Markovian open-system dynamics in Gaussian environments. For a system coupled linearly to a Gaussian environment with zero mean, the bath's influence on the reduced dynamics is completely determined by its two-time correlation kernel. This allow...

Heng-Zhun Chen, Zhen-Ning Cai · 0 citations
Preprint Oct 2026

Efficient quantum phase estimation with adaptive entanglement-assisted Hadamard test

The entanglement-assisted Hadamard test (EHT) is a practical method for estimating a quantum phase by amplifying the phase signal. However, the feasible amplification is fundamentally limited by the accuracy of the reference phase, such that the method is inefficient in the high-precision regime. In this work, we propo...

Heng-Zhun Chen, Ben-Chi Zhao, Ying-Zhou Li · 0 citations

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