Estimating entanglement of unknown states
arXiv:quant-ph/0605155 · doi:10.1063/1.2337535
Abstract
The experimental determination of entanglement is a major goal in the quantum information field. In general the knowledge of the state is required in order to quantify its entanglement. Here we express a lower bound to the robustness of entanglement of a state based only on the measurement of the energy observable and on the calculation of a separability energy. This allows the estimation of entanglement dismissing the knowledge of the state in question.
3 pages, 1 figure. Comments welcome. V2: references updated. Accepted version by Applied Physics Letters
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- Entanglement activation and the robustness of quantum correlations
- Multipartite entanglement of superpositions
- Genuine tripartite entanglement in the non-interacting Fermi gas
- Bounding the amount of entanglement from witness operators
- Experimental entanglement verification and quantification via uncertainty relations
- Robustness of entangled states that are positive under partial transposition
- Automated Machine Learning can Classify Bound Entangled States with Tomograms
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- Quantifying necessary quantum resources for nonlocality
- Single-experiment-detectable multipartite entanglement witness for ensemble quantum computing
- Entanglement Detection and Distillation for Arbitrary Bipartite Systems
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- Geometrically induced singular behavior of entanglement