Robustness and fragility of Markovian dynamics in a qubit dephasing channel

The Markovian dynamics of a qubit is investigated in the scheme of random unitary dynamics, where Kraus operators are changed by an extra noise. The behavior of Markovianity is explored in the perturbed scenario. We provide a new algorithm for checking CP-divisibility (Markovianity) of a dynamical m...

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Veröffentlicht in:	arXiv.org 2017-02
Hauptverfasser:	Wudarski, Filip A, Petruccione, Francesco
Format:	Artikel
Sprache:	eng
Schlagworte:	Algorithms Fragility Physics - Quantum Physics
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	The Markovian dynamics of a qubit is investigated in the scheme of random unitary dynamics, where Kraus operators are changed by an extra noise. The behavior of Markovianity is explored in the perturbed scenario. We provide a new algorithm for checking CP-divisibility (Markovianity) of a dynamical map.
ISSN:	2331-8422
DOI:	10.48550/arxiv.1611.07322