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arXiv quant-ph/0304018quant-ph
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实退相干自由子空间

Realistic Decoherence Free Subspaces

K. M. Fonseca Romero, S. G. Mokarzel, M. O. Terra Cunha, M. C. Nemes

摘要:

消相干自由子空间(DFS)是实现量子信息存储和处理的理论工具。然而,它们是一个实验性的挑战,因为它们存在的条件非常严格。本文研究了耦合到谐振子池中的$N$振子系统满足DFS存在条件的情况。我们表明,在Born-Markov极限和小偏差的可分性和退化条件,有{ \emph{weak decoherence subspaces} }类似于原来的概念DFS。

英文摘要:

Decoherence free subspaces (DFS) is a theoretical tool towards experimental implementation of quantum information storage and processing. However, they represent an experimental challenge, since conditions for their existence are very stringent. This work explores the situation in which a system of $N$ oscillators coupled to a bath of harmonic oscillators is close to satisfy the conditions for the existence of DFS. We show, in the Born-Markov limit and for small deviations from separability and degeneracy conditions, that there are {\emph{weak decoherence subspaces}} which resemble the original notion of DFS.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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