On Markovianity and classicality in multilevel spin–boson models

D Chruściński, S Hesabi, D Lonigro - Scientific Reports, 2023 - nature.com
We provide a detailed discussion about the unitary and reduced evolution induced by family
of Hamiltonian models describing a multilevel system, with a ground state and a possibly …

Detecting spin-bath polarization with quantum quench phase shifts of single spins in diamond

PC Jerger, YX Wang, M Onizhuk, BS Soloway… - PRX Quantum, 2023 - APS
Single-qubit sensing protocols can be used to measure qubit-bath coupling parameters.
However, for sufficiently large coupling, the sensing protocol itself perturbs the bath, which is …

Deep learning the nonclassicality within quasi-distribution representations from marginals

HB Chen, CH Liu, KL Lai, BY Tseng, PY Lo… - arXiv preprint arXiv …, 2023 - arxiv.org
To unequivocally distinguish the genuine quantumness from classicality, a widely adopted
approach appeals to the negativity within a join quasi-distribution representation as a …

Adaptively partitioned analog quantum simulation on near-term quantum computers: The nonclassical free-induction decay of NV centers in diamond

YH Kuo, HB Chen - Physical Review Research, 2023 - APS
The idea of simulating quantum physics with controllable quantum devices had been
proposed several decades ago. With the extensive development of quantum technology …