基于腔场QED和囚禁技术的量子态转移方案(英文)

提出一个量子态转移的方案,该方案的实现是基于囚禁二能级粒子与单模腔场的相互作用．研究表明：当场模与囚禁粒子调谐为载波激发时,无需选择性测量,量子信息就能确定性地在腔场与囚禁粒子内态之间转移；当调谐为第一兰边带时,量子信息只能从囚禁粒子振动态传递到场模态,囚禁粒子的内态到其振动态,或单子系统态到双子系统纠缠态的单向转移．根据量子态转移方案设计了一个量子网络．最后,进行了实验上可行性分析．

Scheme for Implementing Quantum State Transfer in Cavity QED with Trapped Ion

We propose a physical scheme for implementing quantum state transfer utilizing the interaction of a two- level trapped ion with a quantum monomode electromagnetic field within an optical cavity, The results show that by controlling the frequency of cavity field to be resonant with the carrier, quantum information can be transferred between cavity field and the internal state of the ion without the need for the selected measurement of the qubits, Quantum information may also be transmitted from the vibrational state of the ion into cavity mohe, from the internal state of the ion into its vibration state, and from a single-qubit state into an entangled bipartite state by means of the measurement on the qubits when we tune the light field to the first blue sideband. A practical model of a quantum network is proposed, Finally, we analyze the experimental feasibility of the present scheme.