Product state

In quantum mechanics, a product state, or simply separable state, is a special type of separable state in which there are neither classical nor quantum correlations. Precisely, it is a joint state of two systems which can be expressed as

where $\rho_1$ and $\rho_2$ are states of the respective systems. This is a more restrictive condition than mere separability,

单词	Product state
释义	Product state 英语百科 Product state In quantum mechanics, a product state, or simply separable state, is a special type of separable state in which there are neither classical nor quantum correlations. Precisely, it is a joint state of two systems which can be expressed as where $\rho_1$ and $\rho_2$ are states of the respective systems. This is a more restrictive condition than mere separability,
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