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34 papers · 1 filter
A memory-information window in finite-duration quantum control
Doyeol, Ahn
Environmental noise is a major source of decoherence and errors in quantum systems. In a non-Markovian environment, the noise has a finite correlation time, and the system can reta…
Kubo-Martin-Schwinger relation for energy eigenstates of SU(2)-symmetric quantum many-body systems
Jae Dong Noh, Aleksander Lasek, Jade LeSchack +1
The fluctuation-dissipation theorem (FDT) is a fundamental result in statistical mechanics. It stipulates that, if perturbed out of equilibrium, a system responds at a rate proport…
Numerical evidence for the non-Abelian eigenstate thermalization hypothesis
Aleksander Lasek, Jae Dong Noh, Jade LeSchack +1
The eigenstate thermalization hypothesis (ETH) explains how generic quantum many-body systems thermalize internally. It implies that local operators' time-averaged expectation valu…
Non-Markovian cost function for quantum error mitigation with Dirac Gamma matrices representation
Doyeol Ahn
In this study, we explore the non-Markovian cost function for quantum error mitigation (QEM) and the representation of two-qubit operators using Dirac Gamma matrices, central to th…
Non-Markovian noise sources for quantum error mitigation
Doyeol Ahn, Byeongyong Park
Reducing the impact of errors and decoherence in near-term quantum computers, such as noisy intermediate-scale quantum (NISQ) devices, is critical for their practical implementatio…
Optimizing the number of CNOT gates in one-dimensional nearest-neighbor quantum Fourier transform circuit
Byeongyong Park, Doyeol Ahn
The physical limitations of quantum hardware often require nearest-neighbor qubit structures, in which two-qubit gates are required to construct nearest-neighbor quantum circuits.…