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arXiv · 1801.09310

Metastable decoherence-free subspace and pointer states in mesoscopic quantum systems

F. Lastra·C. E. López·J. C. Retamal
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Abstract

Two initially correlated coherent states, each interacting with its own independent dissipative environment exhibit a sudden transition from classical to quantum decoherence. This change in the dynamics is a turning point in the decoherence, in the sense that depending on the average number of photons of each cavity, decoherence can even be suppressed. Indeed, the quantum state is time-independent for a time span in the mesoscopic regime, revealing a decoherence-free subspace. Furthermore, the absence of decoherence is manifested in the apparition of a metastable pointer state basis.

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F. Lastra, C. E. López, J. C. Retamal. 2018-01-28. Metastable decoherence-free subspace and pointer states in mesoscopic quantum systems. https://doi.org/10.1103/physreva.97.042123

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