不纯密度算符的提纯和纠缠态的恢复
Purification of impure density operators and the recovery of entanglements
摘要:
在量子力学中需要保留相对相位,这意味着需要一个由两个密度算符的相位参数化的加法律,这是纯化密度矩阵所需的。这是用量子层析成像和维格纳函数来表示的。纠缠度是根据相位相关乘法确定的。
英文摘要:
The need to retain the relative phases in quantum mechanics implies an addition law parametrized by a phase of two density operators required for the purification of a density matrix. This is shown with quantum tomography and the Wigner function. Entanglement is determined in terms of phase dependent multiplication.
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