Paper Info
Title
Non-Markovian dynamics of quantum coherence of two-level system driven by classical field.
Abstract
In this paper, we study the quantum coherence dynamics of two-level atom system embedded in non-Markovian reservoir in the presence of classical driving field. We analyze the influence of memory effects, classical driving, and detuning on the quantum coherence. It is found that the quantum coherence has different behaviors in resonant case and non-resonant case. In the resonant case, in stark contrast with previous results, the strength of classical driving plays a negative effect on quantum coherence, while detuning parameter has the opposite effect. However, in non-resonant case through a long time, classical driving and detuning parameter have a different influence on quantum coherence compared with resonant case. Due to the memory effect of environment, in comparison with Markovian regime, quantum coherence presents vibrational variations in non-Markovian regime. In the resonant case, all quantum coherence converges to a fixed maximum value; in the non-resonant case, quantum coherence evolves to different stable values. For zero-coherence initial states, quantum coherence can be generated with evolution time. Our discussions and results should be helpful in manipulating and preserving the quantum coherence in dissipative environment with classical driving field.
Year
DOI
Venue
2017
10.1007/s11128-017-1673-0
Quantum Information Processing
Keywords
Field
DocType
Quantum coherence,Dynamics,Non-Markovian,Classical driving field
Degree of coherence,Coherence theory,Quantum mechanics,Quantum process,Quantum dissipation,Coherence (physics),Quantum discord,Quantum dynamics,Amplitude damping channel,Physics
Journal
Volume
Issue
ISSN
16
9
1570-0755
Citations 
PageRank 
References 
4
0.59
2
Authors
2
Name
Order
Citations
PageRank
Zhiming Huang1145.43
Haozhen Situ24310.96