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

Journal Article · Wed Nov 15 04:00:00 EST 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.053809· OSTI ID:20974790

Inoue, R; Kanai, N; Yonehara, T ^[1]; Miyamoto, Y ^[2]; Koashi, M ^[3]; Kozuma, M ^[1]

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1. Department of Physics, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8550 (Japan)
2. Department of Information and Communication Engineering, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585 (Japan)
3. Division of Materials Physics, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531 (Japan)

Recently, atomic ensemble and single photons were successfully entangled by using collective enhancement [D. N. Matsukevich et al., Phys. Rev. Lett. 95, 040405 (2005)], where atomic internal states and photonic polarization states were correlated in a 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.

• OSTI ID: 20974790
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 74; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
COOLING
DEGREES OF FREEDOM
INFORMATION THEORY
LASER RADIATION
OPTICS
ORBITAL ANGULAR MOMENTUM
PHOTONS
POLARIZATION
QUANTUM ENTANGLEMENT