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Quantum Information Processing

Erschienen in:

01.01.2020

Coherence-based measure of quantumness in (non-) Markovian channels

verfasst von: Javid Naikoo, Subhashish Banerjee

Erschienen in: Quantum Information Processing | Ausgabe 1/2020

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Abstract

We make a detailed analysis of quantumness for various quantum noise channels, both Markovian and non-Markovian. The noise channels considered include dephasing channels like random telegraph noise, non-Markovian dephasing and phase damping, as well as the non-dephasing channels such as generalized amplitude damping and Unruh channels. We make use of a recently introduced witness for quantumness based on the square \(l_1\) norm of coherence. It is found that the increase in the degree of non-Markovianity increases the quantumness of the channel. This may be attributed to the fact that the non-Markovian dynamics involves the generation of entanglement between the system and environment degrees of freedom.

Vorheriger Artikel Tighter generalized monogamy and polygamy relations for multiqubit systems

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Titel: Coherence-based measure of quantumness in (non-) Markovian channels
verfasst von: Javid Naikoo
Subhashish Banerjee
Publikationsdatum: 01.01.2020
Verlag: Springer US
Erschienen in: Quantum Information Processing / Ausgabe 1/2020
Print ISSN: 1570-0755
Elektronische ISSN: 1573-1332
DOI: https://doi.org/10.1007/s11128-019-2533-x

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