Entanglement of remote atomic qubits.
Entanglement of remote atomic qubits.
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DOI：
10.1103/physrevlett.96.030405
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发表时间：
2005-11
影响因子：
8.6
通讯作者：
D. Matsukevich;T. Chanelière;S. Jenkins;Shau-Yu Lan;T. Kennedy;A. Kuzmich
中科院分区：
文献类型：
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作者：
D. Matsukevich;T. Chanelière;S. Jenkins;Shau-Yu Lan;T. Kennedy;A. Kuzmich
我们报告了两个远程原子量子比特纠缠的观测结果，通过在现场产生原子量子比特和单个光子的纠缠态，通过光纤将光子传输到相邻实验室的现场，并将光子转换为原子量子比特来实现。两个远程原子量子比特的纠缠是通过在本地执行每个原子量子比特到光子量子比特的量子态转移以及随后违反贝尔不等式的偏振相关性的测量来推断的[等式：见正文]。我们通过实验确定[方程：见正文]。两个远程原子量子比特的纠缠，每个量子比特由两个独立的自旋波激发组成，以及物质和光之间纠缠的可逆相干转移代表了量子信息科学的重要进展。
We report observations of entanglement of two remote atomic qubits, achieved by generating an entangled state of an atomic qubit and a single photon at site , transmitting the photon to site in an adjacent laboratory through an optical fiber, and converting the photon into an atomic qubit. Entanglement of the two remote atomic qubits is inferred by performing, locally, quantum state transfer of each of the atomic qubits onto a photonic qubit and subsequent measurement of polarization correlations in violation of the Bell inequality [EQUATION: SEE TEXT]. We experimentally determine [EQUATION: SEE TEXT]. Entanglement of two remote atomic qubits, each qubit consisting of two independent spin wave excitations, and reversible, coherent transfer of entanglement between matter and light represent important advances in quantum information science.