Mixedness and teleportation
- 6 March 2000
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 61 (4), 040101
- https://doi.org/10.1103/physreva.61.040101
Abstract
We show that on exceeding a certain degree of mixedness (as quantified by the von Neumann entropy), entangled states become useless for teleportation. By increasing the dimension of the entangled systems, this entropy threshold can be made arbitrarily close to maximal. This entropy is found to exceed the entropy threshold sufficient to ensure the failure of dense coding.Keywords
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