The Real Density Matrix

被引：12

作者：

Havel, Timothy F. ^{[1
]}

机构：

[1] MIT, Dept Nucl Engn, Cambridge, MA 02139 USA

来源：

QUANTUM INFORMATION PROCESSING | 2002年 / 1卷 / 06期

关键词：

Density matrix; superoperator; Hadamard product; nuclear magnetic resonance; product operator formalism; Pauli algebra;

D O I：

10.1023/A:1024026700444

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We introduce a nonsymmetric real matrix which contains all the information that the usual Hermitian density matrix does, and which has exactly the same tensor product structure. The properties of this matrix are analyzed in detail in the case of multi-qubit (e.g., spin = 1/2) systems, where the transformation between the real and Hermitian density matrices is given explicitly as an operator sum, and used to convert the essential equations of the density matrix formalism into the real domain.

引用

页码：511 / 538

页数：28

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