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摘要: 本文探讨了把量子广义测量和无消相干子空间 (DFS) 结合起来抑制消相干的潜力. 证实了: 把量子广义子空间投影测量 (QGSPM) 和量子广义分类投影测量 (QGCPM) 与 DFS 算子条件结合起来, 可以有效增强 Markovian 和非 Markovian 量子开放系统抑制消相干的能力. 强调了量子测量可以作为操控量子态的重要手段. 本方法的优点在于可以构造性地设计相干控制哈密顿量.Abstract: This paper explores the potential of combating the decoherence by associating quantum generalized measurement with decoherence-free subspaces (DFS). It is demonstrated that associating quantum generalized subspace projector measurement (QGSPM) and quantum generalized case-projector measurement (QGCPM) with the operator conditions for DFS will enhance the capability of suppressing the decoherence for both Markovian and non-Markovian open quantum systems. It is emphasized that quantum measurement can be regarded as a means to manipulate quantum states. This method is advantageous because the coherent control Hamilton can be constructively designed.
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Key words:
- Quantum measurement /
- decoherence-free subspace /
- decoherence control
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