混合量子态的可观测纠缠度量
Observable entanglement measure for mixed quantum States.
作者信息
Mintert Florian, Buchleitner Andreas
机构信息
Department of Physics, Harvard University, 17 Oxford Street, Cambridge Massachusetts, USA.
出版信息
Phys Rev Lett. 2007 Apr 6;98(14):140505. doi: 10.1103/PhysRevLett.98.140505. Epub 2007 Apr 4.
Abstract
We quantify an unknown mixed quantum state's entanglement by suitable, local parity measurements on its twofold copy. The associated observable qualifies as a generalized entanglement witness.
摘要
我们通过对未知混合量子态的两份拷贝进行适当的局域宇称测量来量化其纠缠。相关的可观测量可作为广义纠缠见证者。
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