Bell Inequality Violation with Two Remote Atomic Qubits

作者：Dzmitry Matsukevich, Peter Maunz, David L. Moehring, Steven Olmschenk, Christopher R. Monroe · 发表于：Physical Review Letters · 年份：2008 · DOI：10.1103/physrevlett.100.150404 · 被引用次数：391 · 研究领域：Quantum Information and Cryptography、Quantum Mechanics and Applications、Quantum Computing Algorithms and Architecture

We observe violation of a Bell inequality between the quantum states of two remote Yb+ ions separated by a distance of about 1 m with the detection loophole closed. The heralded entanglement of two ions is established via interference and joint detection of two emitted photons, whose polarization is entangled with each ion. The entanglement of remote qubits is also characterized by full quantum state tomography.