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Results tagged with entanglement-negativity
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user 14122
For questions about the entanglement measure derived from the PPT separability criterion.
2
votes
1
answer
463
views
In a bipartite system $AB$, why does the entanglement negativity $\mathcal{N}(\rho^{T_A})$ m...
Consider a system composed of two subsystems $A$ and $B$ living in $\mathcal{H}=\mathcal{H}_A \otimes \mathcal{H}_B$. The density matrix of the system $AB$ is defined to be $\rho$. The entanglement ne …
- 24.9k
3
votes
1
answer
709
views
Is there an identity for the partial transpose of a product of operators?
The partial transpose of an operator $M$ with respect to subsystem $A$ is given by
$$
M^{T_A} := \left(\sum_{abcd} M^{ab}_{cd} \underbrace{|a\rangle \langle b| }_{A}\otimes \underbrace{|c \rangle \la …
- 24.9k