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arXiv · 0911.4356

Universal covariant quantum cloning circuits for qubit entanglement manipulation

Levente Szabo·Matyas Koniorczyk·Peter Adam·Jozsef Janszky
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Abstract

We consider the entanglement manipulation capabilities of the universal covariant quantum cloner or quantum processor circuit for quantum bits. We investigate its use for cloning a member of a bipartite or a genuine tripartite entangled state of quantum bits. We find that for bipartite pure entangled states a nontrivial behavior of concurrence appears, while for GHZ entangled states a possibility of the partial extraction of bipartite entanglement can be achieved.

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Levente Szabo, Matyas Koniorczyk, Peter Adam, Jozsef Janszky. 2009-11-23. Universal covariant quantum cloning circuits for qubit entanglement manipulation. https://doi.org/10.1103/physreva.81.032323

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