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arXiv · 0704.2246

Towards experimental entanglement connection with atomic ensembles in the single excitation regime

J. Laurat·C. W. Chou·H. Deng·K. S. Choi·D. Felinto·H. de Riedmatten·H. J. Kimble
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Abstract

We present a protocol for performing entanglement connection between pairs of atomic ensembles in the single excitation regime. Two pairs are prepared in an asynchronous fashion and then connected via a Bell measurement. The resulting state of the two remaining ensembles is mapped to photonic modes and a reduced density matrix is then reconstructed. Our observations confirm for the first time the creation of coherence between atomic systems that never interacted, a first step towards entanglement connection, a critical requirement for quantum networking and long distance quantum communications.

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J. Laurat, C. W. Chou, H. Deng, K. S. Choi, D. Felinto, H. de Riedmatten, H. J. Kimble. 2007-04-17. Towards experimental entanglement connection with atomic ensembles in the single excitation regime. https://doi.org/10.1088/1367-2630%2F9%2F6%2F207

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