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telecloning Quantum States with Trapped Ions

Communications in Theoretical Physics 2007年第5X期48卷 827-830页

作者： YANG Rong-Can LI Hong-Cai LIN Xiu HUANG Zhi-Ping School of Physics and OptoElectronics Technology Fujian Normal University Fuzhou 350007 China

We propose a scheme for telecloning quantum states with trapped ions. The scheme is based on a single ion interacting with a single laser pulse. In the protocol, an ion is firstly measured to determine whether the telecloning succeeds or not, and then another ion is detected to complete the whole procedure. The required experimental techniques are within the scope of what can be obtained in the ion-trap setup.

关键词： telecloning W states state-dependent trapped ions

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Scheme to implement optimal asymmetric economical 1→3 phase-covariant telecloning via cavity QED

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Chinese Physics B 2010年第8期19卷 127-132页

作者：宋庆敏叶柳 School of Physics and Material Science Anhui University

We propose an experimentally feasible scheme to implement the optimal asymmetric economical 1→3 phasecovariant telecloning protocol, which works without ancilla, based on cavity quantum electrodynamics （QED）. The scheme is insensitive to the cavity field states and the cavity decay. In the telecloning process, the cavity is only virtually excited, it greatly prolongs the efficient decoherent time. Therefore, the scheme may be experimentally realized in the field of current cavity QED techniques.

关键词： telecloning cavity QED

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Scheme to Implement Optimal Symmetric 1→2 Universal Quantum telecloning Through Cavity-Assisted Interaction

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Communications in Theoretical Physics 2008年第11期50卷 1096-1100页

作者： YANG Zhen ZHANG Wen-Hai HE Juan YE Liu School of Physics ＆： Material Science Anhui University Hefei 230039 China Department of Physics ＆ Electronic Engineering Hefei Teachers College Hefei 230601 China Department of Physics Fuyang Normal College Fuyang 236041 China

We propose a scheme to implement the optimal symmetric 1 → 2 universal quantum telecloning through cavity-assisted interaction. In our scheme an arbitrary single atomic state can be telecloned to two single atomic states. And three atoms are trapped in three spatially separated cavities respectively. With a particular multiparticle entangled state acting as a quantum information channel and the trapped single atom acting as a quantum network node for its long-lived internal state, quantum information can be telecloned among nodes and can stored in the nodes.

关键词： telecloning cavity-QED cavity-assisted interaction

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Remote Quantum-Information Concentration: Reversal of Ancilla-Free Phase-Covariant telecloning

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Open Journal of Microphysics 2013年第1期3卷 18-21页

作者： Xinwen Wang Shiqing Tang Department of Physics and Electronic Information Science Hengyang Normal University Hengyang China Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Department of Physics Hunan Normal University Changsha China

telecloning and its reverse process, referred to as remote quantum-information concentration (RQIC), have been attracting considerable interest because of their potential applications in quantum-information processing. The previous RQIC protocols were focused on the reverse process of the optimal universal telecloning. We here study the reverse process of ancilla-free phase-covariant telecloning (AFPCT). It is shown that the quantum information originally distributed into two spatially separated qubits from a single qubit via the optimal AFPCT procedure can be remotely concentrated back to a single qubit with a certain probability by using an asymmetric W state as the quantum channel.

关键词： Remote Quantum-Information Concentration Phase-Covariant telecloning W State

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Generation and application of a controllable multi-atom entangled state

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Chinese Physics B 2004年第12期13卷 2021-2024页

作者：黄燕霞詹明生 DepartmentofPhysics HubeiNormalUniversityHuangshi435002China//StateKeyLaboratoryofMagneticResonanceandAtomicandMolecularPhysicsWuhanInstituteofPhysicsandMathematicsChineseAcademyofSciencesWuhan430071China StateKeyLaboratoryofMagneticResonanceandAtomicandMolecularPhysics WuhanInstituteofPhysicsandMathematicsChineseAcademyofSciencesWuhan430071China

In this paper, we present a scheme to prepare a set of the multi-atom entangled states by the cavity quantum electrodynamics (QED) technology. The multi-atom entangled states have some particular entanglement *** example, the remaining reduced density matrices Pij still retain entanglement or disentanglement when any N-2atoms of the N atoms are traced out, which can be chosen freely according to our need, and the relative entanglement strength of any pair of atoms (measured by the concurrence) can be arbitrarily adjusted. In addition, they may be completely symmetric under the exchange of any two atoms, and perform certain quantum information tasks, such as telecloning, teleportation, secret sharing and so on.

关键词： multi-atom entangled states QED telecloning

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