Quantum coherence, correlated noise and Parrondo games

Abstract

We discuss the effect of correlated noise on the robustness of quantum coherent phenomena. First we consider a simple, toy model to illustrate the effect of such correlations on the decoherence process. Then we show how decoherence rates can be suppressed using a Parrondo-like effect. Finally, we report the results of many-body calculations in which an experimentally-measurable quantum coherence phenomenon is significantly enhanced by non-Markovian dynamics arising from the noise source.

8 pages

References in corpus (5)

• New paradoxical games based on Brownian ratchets
• Entangled Bell and GHZ states of excitons in coupled quantum dots
• Quantum entanglement and information processing via excitons in optically-driven quantum dots
• Quantum Parrondo's Games
• Exploiting Randomness in Quantum Information Processing

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• Discrete--time ratchets, the Fokker--Planck equation and Parrondo's paradox
• Genuine Parrondo's paradox in quantum walks with time-dependent coin operators
• A q-deformed logistic map and its implications
• Preferences in Quantum Games
• Quantum version of a generalized Monty Hall game and its possible applications to quantum secure communications
• Collective decision making and paradoxical games
• Pulsed Generation of Quantum Coherences and Non-classicality in Light-Matter Systems