Journal
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
Volume 53, Issue 5, Pages 1637-1647Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10773-013-1961-0
Keywords
Optimal universal 1 -> 2 cloning; Telecloning of arbitrary two-qubit states; Remote information concentration; Cluster state; GHZ state
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Funding
- National Natural Science Foundation of China [11071178]
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The previous protocols of remote quantum information concentration were focused on the reverse process of quantum telecloning of single-qubit states. We here investigate the reverse process of optimal universal 1 -> 2 telecloning of arbitrary two-qubit states. The aim of this telecloning is to distribute respectively the quantum information to two groups of spatially separated receivers from a group of two senders situated at two different locations. Our scheme shows that the distributed quantum information can be remotely concentrated back to a group of two different receivers with 1 of probability by utilizing maximally four-particle cluster state and four-particle GHZ state as quantum channel.
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