期刊
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
卷 53, 期 5, 页码 1637-1647出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10773-013-1961-0
关键词
Optimal universal 1 -> 2 cloning; Telecloning of arbitrary two-qubit states; Remote information concentration; Cluster state; GHZ state
资金
- National Natural Science Foundation of China [11071178]
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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