Control of Decoherence and Correlation in Single Quantum Dissipative Oscillator Systems

Details Control of Decoherence and Correlation in Single Quantum Dissipative Oscillator Systems Control of Decoherence and Correlation in Single Quantum Dissipative Oscillator Systems

2000-08-23

arxiv.org/abs/quant-ph/0008099v1

Physics Letters A 279, 175 (2001)

Physics

Quantum Physics

10 pages, 2 figures

Scientific paper

10.1016/S0375-9601(00)00821-5

A single quantum dissipative oscillator described by the Lindblad equation serves as a model for a nanosystem. This model is solved exactly by using the ambiguity function. The solution shows the features of decoherence (spatial extent of quantum behavior), correlation (spatial scale over which the system localizes to its physical dimensions), and mixing (mixed- state spatial correlation). A new relation between these length scales is obtained here. By varying the parameters contained in the Lindblad equation, it is shown that decoherence and correlation can be controlled. We indicate possible interpretation of the Lindblad parameters in the context of experiments using engineered reservoirs.

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