Quantum Decoherence in Dense Media: A Few Examples

We investigate the dynamics of quantum and classical correlations in a system of two qubits under local colored-noise dephasing channels. The time evolution of a single qubit interacting with its own environment is described by a memory kernel non-Markovian master equation. The memory effects of the non-Markovian reservoirs introduce new features in the dynamics of quantum and classical correlations compared to the white noise Markovian case. Depending on the geometry of the initial state, the system can exhibit frozen discord and multiple sudden transitions between classical and quantum decoherence [L. Mazzola, J. Piilo and S. Maniscalco, Phys. Rev. Lett. 104 (2010) 200401]. We provide a geometric interpretation of those phenomena in terms of the distance of the state under investigation to its closest classical state in the Hilbert space of the system.

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Quantum Decoherence and Quantum-Holographic Information Processes: From Biomolecules to Biosystems

Materials Science Forum ◽

10.4028/www.scientific.net/msf.518.485 ◽

2006 ◽

Vol 518 ◽

pp. 485-490 ◽

Cited By ~ 4

Author(s):

D. Raković ◽

M. Dugić ◽

M.B. Plavšić ◽

G. Keković ◽

Irena Ćosić ◽

...

Keyword(s):

Conformational Changes ◽

Energy State ◽

Quantum Decoherence ◽

Biomolecular Recognition ◽

Control Mechanisms ◽

Macroscopic Quantum ◽

Resonant Recognition Model ◽

Expression Of Genes ◽

Quantum Approach ◽

Quantum Ensemble

Our recently proposed quantum approach to biomolecular recognition processes is hereby additionally supported by biomolecular Resonant Recognition Model and by quantum-chemical theory of biomolecular non-radiative resonant transitions. Previously developed general quantumdecoherence framework for biopolymer conformational changes in very selective ligandproteins/ target-receptors key/lock biomolecular recognition processes (with electron-conformational coupling, giving rise to dynamical modification of many-electron energy-state hypersurface of the cellular quantum-ensemble ligand-proteins/target-receptors biomolecular macroscopic quantum system, with revealed possibility to consider cellular biomolecular recognition as a Hopfield-like quantum-holographic associative neural network) is further extended from nonlocal macroscopicquantum level of biological cell to nonlocal macroscopic-quantum level of biological organism, based on long-range coherent microwave excitations (as supported by macroscopic quantum-like microwave resonance therapy of the acupuncture system) - which might be of fundamental importance in understanding of underlying macroscopic quantum (quantum-holographic Hopfieldlike) control mechanisms of embryogenesis/ontogenesis and morphogenesis, and their backward influence on the expression of genes.

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