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

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

2007-04-17

arxiv.org/abs/0704.2246v1

New J. Phys. 9, 207 (2007)

Physics

Quantum Physics

Scientific paper

10.1088/1367-2630/9/6/207

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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