A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Revealing memory effects in phase-covariant quantum master equations
Tekijät: Teittinen J, Lyyra H, Sokolov B, Maniscalco S
Kustantaja: IOP PUBLISHING LTD
Julkaisuvuosi: 2018
Journal: New Journal of Physics
Tietokannassa oleva lehden nimi: NEW JOURNAL OF PHYSICS
Lehden akronyymi: NEW J PHYS
Artikkelin numero: ARTN 073012
Vuosikerta: 20
Sivujen määrä: 13
ISSN: 1367-2630
DOI: https://doi.org/10.1088/1367-2630/aacc38
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/32174185
Tiivistelmä
We study and compare the sensitivity of multiple non-Markovianity indicators for a qubit subjected to general phase-covariant noise. For each of the indicators, we derive analytical conditions to detect the dynamics as non-Markovian. We present these conditions as relations between the time-dependent decay rates for the general open system dynamics and its commutative and unital subclasses. These relations tell directly if the dynamics is non-Markovian w.r.t.. each indicator, without the need to explicitly derive and specify the analytic form of the time-dependent coefficients. Moreover, with a shift in perspective, we show that if one assumes only the general form of the master equation, measuring the non-Markovianity indicators gives us directly non-trivial information on the relations between the unknown decay rates.
We study and compare the sensitivity of multiple non-Markovianity indicators for a qubit subjected to general phase-covariant noise. For each of the indicators, we derive analytical conditions to detect the dynamics as non-Markovian. We present these conditions as relations between the time-dependent decay rates for the general open system dynamics and its commutative and unital subclasses. These relations tell directly if the dynamics is non-Markovian w.r.t.. each indicator, without the need to explicitly derive and specify the analytic form of the time-dependent coefficients. Moreover, with a shift in perspective, we show that if one assumes only the general form of the master equation, measuring the non-Markovianity indicators gives us directly non-trivial information on the relations between the unknown decay rates.
Ladattava julkaisu This is an electronic reprint of the original article. |  |
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