Decoherence and dephasing in spin-based solid state quantum computers

Details Decoherence and dephasing in spin-based solid state quantum computers Decoherence and dephasing in spin-based solid state quantum computers

2001-08-21

arxiv.org/abs/cond-mat/0108339v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Conclusion added. Other minor changes made

Scientific paper

We discuss the operational definition of decoherence in various solid state systems. In particular, we review, in the context of spin-based solid state quantum computation, the introduction of $T_1$ and $T_2$ to describe decoherence in a two level system. We provide a perspective on recent experiments involving the manipulation of spin coherence in semiconductors, and discuss specific decoherence and dephasing issues in electron spin-based quantum dot quantum computer architectures.

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