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Symmetric Telecloning and Entanglement Distribution of Spin Quantum States |
| WANG Qiong, LI Ji-Xin, ZANG Hao-Sheng |
| Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Department of Physics, Hunan Normal University, Changsha 410081 |
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| Cite this article: |
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WANG Qiong, LI Ji-Xin, ZANG Hao-Sheng 2008 Chin. Phys. Lett. 25 2770-2773 |
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Abstract We propose a physical realization of symmetric telecloning machine for spin quantum states. The concept of area average fidelity is introduced to describe the telecloning quality. It is indicated that for certain input states this quantity may come to an enough high level to satisfy the need of quantum information processing. We also study the properties of entanglement distribution via the spin chain for arbitrary two-qubit entangled pure states as inputs and find that the decay ratio of entanglement for the output states is only determined by the parameters of spin chain and waiting time, independent of the initial input states.
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| Keywords:
03.67.Hk
03.65.Ud
03.67.Lx
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Received: 06 April 2008
Published: 25 July 2008
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| PACS: |
03.67.Hk
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(Quantum communication)
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03.65.Ud
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(Entanglement and quantum nonlocality)
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03.67.Lx
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(Quantum computation architectures and implementations)
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