Classical memoryless noise-induced maximally discordant mixed separable steady states

We have investigated the dynamics of quantum discord and entanglement for two qubits subject to independent global transverse and/or longitudinal memoryless noisy classical fields. Global transverse and/or longitudinal random fields are found to drive the system to maximally discordant mixed separab...

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Bibliographic Details
Published in:Physics letters. A 2012-12, Vol.377 (1-2), p.53-59
Main Authors: Altintas, Ferdi, Kurt, Arzu, Eryigit, Resul
Format: Article
Language:English
Subjects:
Classical noise
Maximally discordant mixed state
Quantum discord
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Summary:We have investigated the dynamics of quantum discord and entanglement for two qubits subject to independent global transverse and/or longitudinal memoryless noisy classical fields. Global transverse and/or longitudinal random fields are found to drive the system to maximally discordant mixed separable steady states for suitable initial conditions. Moreover, two independent noises in the system are found to enhance both the steady state randomness and quantum discord in the absence of entanglement for some initial states. ► The effects of classical memoryless transverse and/or longitudinal random fields on quantum discord and entanglement. ► Noise induced maximally discordant mixed separable steady states are explored. ► Two independent noises increases both the randomness and quantum discord.
ISSN:0375-9601
1873-2429
DOI:10.1016/j.physleta.2012.11.004