Entanglement of orbital angular momentum states between an ensemble of cold atoms and a photon

Details Entanglement of orbital angular momentum states between an ensemble of cold atoms and a photon Entanglement of orbital angular momentum states between an ensemble of cold atoms and a photon

2006-04-21

arxiv.org/abs/quant-ph/0604165v4

Phys. Rev. A 74, 053809 (2006)

Physics

Quantum Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevA.74.053809

Recently, atomic ensemble and single photons were successfully entangled by using collective enhancement [D. N. Matsukevich, \textit{et al.}, Phys. Rev. Lett. \textbf{95}, 040405(2005).], where atomic internal states and photonic polarization states were correlated in nonlocal manner. Here we experimentally clarified that in an ensemble of atoms and a photon system, there also exists an entanglement concerned with spatial degrees of freedom. Generation of higher-dimensional entanglement between remote atomic ensemble and an application to condensed matter physics are also discussed.

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