Requirements for copatibility between local and multipartite quantum states
Requirements for copatibility between local and multipartite quantum states
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发表时间：
2003-01
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通讯作者：
S. Bravyi
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作者：
S. Bravyi
我们考虑将多部量子态映射到局部密度矩阵集合的部分迹变换。我们称这个集合为平均场态。对于Hilbert空间(C2)⊗n和C2⊗C2⊗C4，给出了平均场态与至少一个多部纯态相容的充分必要条件。讨论了平均场态与更一般的多部量子态的相容性。
We consider a partial trace transformation which maps a multipartite quantum state to collection of local density matrices. We call this collection a mean field state. For the Hilbert spaces (C2)⊗n and C2 ⊗ C2 ⊗ C4 the necessary and sufficient conditions under which a mean field state is compatible with at least one multipartite pure state are found. Compatibility of mean field states with more general classes of multipartite quantum states is discussed.