Reversible optical memory for twisted photons

We report on an experiment in which orbital angular momentum (OAM) of light is mapped at the single-photon level into and out of a cold atomic ensemble. Based on the dynamic electromagnetically induced transparency protocol, the demonstrated optical memory enables the reversible mapping of Laguerre-...

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Bibliographic Details
Published in:Optics letters 2013-03, Vol.38 (5), p.712-714
Main Authors: Veissier, L, Nicolas, A, Giner, L, Maxein, D, Sheremet, A S, Giacobino, E, Laurat, J
Format: Article
Language:English
Subjects:
Angular momentum
Dynamics
Handedness
Helical
Optical memory (data storage)
Photons
Physics
Quantum Physics
Qubits (quantum computing)
Solid phases
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Summary:We report on an experiment in which orbital angular momentum (OAM) of light is mapped at the single-photon level into and out of a cold atomic ensemble. Based on the dynamic electromagnetically induced transparency protocol, the demonstrated optical memory enables the reversible mapping of Laguerre-Gaussian modes with preserved handedness of the helical phase structure. The demonstrated capability opens the possibility to the storage of qubits encoded as superpositions of OAM states and to multidimensional light matter interfacing.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.38.000712