期刊
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
卷 27, 期 18, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217979213500914
关键词
Telecloning; remote information concentration; (non) maximally entangled four-particle cluster state; optimal cloning state; POVM
资金
- National Natural Science Foundation of China [11226336, 61003287]
- Fundamental Research Funds for the Central Universities [SWJTU11BR174]
By using a proper positive operator-valued measure (POVM), we present two new schemes for remote information concentration via four-particle cluster state. It is demonstrated that by employing a maximally entangled (respectively, nonmaximally entangled) four-particle cluster state as the quantum channel, quantum information initially and generally (respectively, specially) distributed in three spatially separated qubits can be remotely and probabilistically concentrated back to a single qubit without performing any global operations. Moreover, the total success probabilities of these two protocols are also worked out. It is more easier to realize experimentally by POVM than by projective measurement.
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