Cloning the entanglement of a pair of d-dimensional quantum systems
| Autor: | Patrick Navez, Evgueni Karpov, Nicolas J. Cerf |
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| Rok vydání: | 2007 |
| Předmět: |
Physics
Nuclear and High Energy Physics Radiation TheoryofComputation_GENERAL Quantum Physics Quantum entanglement State (functional analysis) Squashed entanglement Multipartite entanglement Atomic and Molecular Physics and Optics Quantum mechanics Radiology Nuclear Medicine and imaging Quantum cloning W state Quantum Entanglement witness |
| Zdroj: | Physics of Particles and Nuclei Letters. 4:112-118 |
| ISSN: | 1531-8567 1547-4771 |
| DOI: | 10.1134/s1547477107020021 |
| Popis: | We derive a quantum cloning machine that maximizes the entanglement of formation of the two copies of any maximally entangled input state, while preserving the separability of all unentangled input states. In addition, it is proven to optimally duplicate the entanglement of formation of all isotropic input states. For large d, the cloning machine behaves classically and outperforms a local entanglement cloner, studied for comparison. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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