Preparation of n-Atom GHZ State and Implementation of Quantum-State Transfer via Cavity Decay

• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2008,（3）
• 页码范围: 655-658
• 页数: 4页
• 语种: 英文

摘要

We propose schemes to prepare n-atom Greenberger-Horne-Zeilinger (GHZ) state via two-sided cavities interacting with single-photon pulses, and achieve quantum state transfer (QST) from one atom to another atom. Entanglement particle pair and the control of coupling between qubits are of no need in the QST process. Some practical quantum noises only decrease the success probabilities of the schemes but have no influence on the fidelity of prepared state. In addition, the success probabilities of our schemes are close to unity in the ideal case.