Complete positivity in quantum open system dynamics

2001 ◽  
Author(s):  
Fabio Benatti
Keyword(s):  
System Dynamics ◽  
Open System ◽  
Complete Positivity ◽  
Quantum Open System

scholarly journals Five approaches to exact open-system dynamics: Complete positivity, divisibility, and time-dependent observables

2019 ◽  
Vol 151 (4) ◽  
pp. 044101 ◽  
Author(s):  
V. Reimer ◽  
M. R. Wegewijs ◽  
K. Nestmann ◽  
M. Pletyukhov
Keyword(s):  
System Dynamics ◽  
Open System ◽  
Time Dependent ◽  
Complete Positivity

scholarly journals Revisiting the Quantum Open System Dynamics of Central Spin Model

Quanta ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 55-64
Author(s):  
Samyadeb Bhattacharya ◽  
Subhashish Banerjee
Keyword(s):  
System Dynamics ◽  
Master Equation ◽  
Open System ◽  
Open Quantum Systems ◽  
Quantum Systems ◽  
Spin Model ◽  
Open Quantum ◽  
Spin Bath ◽  
Quantum Open System ◽  
Kraus Operators

In this work, we revisit the theory of open quantum systems from the perspective of fermionic baths. Specifically, we concentrate on the dynamics of a central spin half particle interacting with a spin bath. We have calculated the exact reduced dynamics of the central spin and constructed the Kraus operators in relation to that. Further, the exact Lindblad type canonical master equation corresponding to the reduced dynamics is constructed. We have also briefly touched upon the aspect of non-Markovianity from the backdrop of the reduced dynamics of the central spin.Quanta 2021; 10: 55–64.

scholarly journals Symmetry in the open-system dynamics of quantum correlations

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Henri Lyyra ◽  
Göktuğ Karpat ◽  
Chuan-Feng Li ◽  
Guang-Can Guo ◽  
Jyrki Piilo ◽  
...  
Keyword(s):  
System Dynamics ◽  
Open System ◽  
Quantum Correlations

scholarly journals Purity as a witness for initial system-environment correlations in open-system dynamics

2011 ◽  
Vol 84 (4) ◽  
Author(s):  
D Z. Rossatto ◽  
T. Werlang ◽  
L K. Castelano ◽  
C J. Villas-Boas ◽  
F F. Fanchini
Keyword(s):  
System Dynamics ◽  
Open System ◽  
Initial System ◽  
System Environment

Disentanglement and decoherence by open system dynamics

2004 ◽  
Vol 69 (5) ◽  
Author(s):  
P. J. Dodd ◽  
J. J. Halliwell
Keyword(s):  
System Dynamics ◽  
Open System

A View on Decoherence Via Master Equations

2005 ◽  
Vol 12 (01) ◽  
pp. 37-54 ◽  
Author(s):  
Rolando Rebolledo
Keyword(s):  
System Dynamics ◽  
Open System ◽  
Quantum Physics ◽  
Master Equations

This paper addresses the discussion on probabilistic features of the concept of decoherence as it appeared in quantum physics. Given a Lindblad-type generator of an open system dynamics, we derive applicable criteria to characterize decoherent behaviour.

scholarly journals Relativistic Quantum Metrology in Open System Dynamics

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Zehua Tian ◽  
Jieci Wang ◽  
Heng Fan ◽  
Jiliang Jing
Keyword(s):  
System Dynamics ◽  
Open System ◽  
Relativistic Quantum ◽  
Quantum Metrology
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