We compute the entanglement cost of several families of bipartite mixed states, including arbitrary mixtures of two Bell states. This is achieved by developing a technique that allows us to ascertain the additivity of the entanglement of formation for any state supported on specific subspaces. As a...
We find that the asymptotic entanglement of assistance of a general bipartitemixed state is equal to the smaller of its two local entropies. Our protocolgi... JA Smolin,F Verstraete,A Winter - 《Physical Review A》 被引量: 208发表: 2005年 Entanglement Cost of Bipartite Mixed States We comp...
We solve maximal-entanglement generation as an optimization problem with quantum process delity as the cost function. Then we determine an appropriate pair of one-parameter coins along with coin sequences that generate maximal entanglement, which is available for any step beyond the second regardless...
Then, we look at the energy cost of entanglement extraction in quantum field theories using physical arguments. We also discuss some general methods for quantifying the energy cost of entanglement extraction. Finally, we use matrix product states to numerically calculate the energy cost of ...
, M; the set of general (mixed) M-separable states is then formed by all convex mixtures of pure M-separable states, where each term in the mixture may be factorised with respect to a different multipartition. This provides a partition-independent classification of separability (see also the...
These conditions reveal a partial ordering on the entangled states, and connect quantum entanglement to the algebraic theory of majorization. As a consequence, we find that there exist essentially different types of entanglement for bipartite quantum systems. 展开 ...
For example,ALLdenotes the set of all POVMs. If the states are bipartite onAandB, we consider various specialized sets. On the one hand, the sets{\textsf {SEP}}(A:B)and{\textsf {PPT}}(A:B)contain POVMs whose elements are separable ({\textsf {SEP}}) or have positive partial tr...
There exist numerous criteria to detect bipartite entanglement;e however, these criteria are less reliable for higher-dimensional systems. For example, the popular Peres-Horodecki criteria state that the separable states are positive partial transpose (PPT) [15, 16], meaning for separable states \(...
(40) 147 Distillable entanglement is reverse to the entanglement cost and tells how many LOCC operations should be used to extract state ρ into composition of bipartite entangled states. 3. Entanglement of formation: For a mixed states ρ the entanglement of formation is given by EF (ρ) =...
We study the limits of bipartite entanglement distribution using a chain of quantum repeaters that have quantum memories. To generate end-to-end entanglement, each node can attempt the generation of an entangled link with a neighbor, or perform an entang