Non-positivity of the energy-change Kirkwood-Dirac quasiprobability distribution witnesses CP-divisibility violations in open quantum systems, with stronger link under energy-preserving interactions.
Ciccarello, Collision models in quantum optics, Quantum Measurements and Quantum Metrology4, 10.1515/qmetro- 2017-0007 (2017)
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Nonclassical energy-change distribution as a witness of non-Markovian quantum dynamics
Non-positivity of the energy-change Kirkwood-Dirac quasiprobability distribution witnesses CP-divisibility violations in open quantum systems, with stronger link under energy-preserving interactions.