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Remote State Preparation via a Non-Maximally Entangled Channel |
| ZHENG Yi-Zhuang1,2;GU Yong-Jian1,3;GUO Guang-Can1 |
| 1Laboratory of Quantum Communication and Quantum
Computation, University of Science and Technology of China, Hefei 230026
2Department of Physics, Wenzhou Normal College, Wenzhou 325027
3Department of Physics, Weifang University, Weifang 261043
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| Cite this article: |
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ZHENG Yi-Zhuang, GU Yong-Jian, GUO Guang-Can 2002 Chin. Phys. Lett. 19 14-16 |
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Abstract We investigate remote state preparation (RSP) via a non-maximally entangled channel for three cases: a general qubit, a special ensemble of qubits (qubit states on the equator of the Bloch sphere) and asymptotic limit of N copies of a general state. The results show that the classical communication cost of RSP for the two latter cases can be less than that of teleportation, but for the first case, in a restricted setting, the classical communication cost is equal to that of teleportation. Whether or not this is the case for more general setting is still an open question.
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| Keywords:
03.67.-a
03.67.Hk
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Published: 01 January 2002
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