Orbital angular momentum analysis of high-dimensional entanglement | Zendy

Wouter H. J. Peeters | Zendy; E. J. K. Verstegen | Zendy; M. P. van Exter | Zendy

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Orbital angular momentum analysis of high-dimensional entanglement

Author(s) -

Wouter H. J. Peeters,

E. J. K. Verstegen,

M. P. van Exter

Publication year - 2007

Publication title -

physical review a

Language(s) - English

Resource type - Journals

eISSN - 1094-1622

pISSN - 1050-2947

DOI - 10.1103/physreva.76.042302

Subject(s) - physics , quantum entanglement , interferometry , angular momentum , photon , orbital angular momentum of light , optics , modal , quantum mechanics , function (biology) , classical mechanics , total angular momentum quantum number , quantum , chemistry , evolutionary biology , polymer chemistry , biology

We describe a simple experiment that is ideally suited to analyze the high-dimensional entanglement contained in the orbital angular momenta (OAM) of entangled photon pairs. For this purpose we use a two-photon interferometer with a built-in image rotator and measure the two-photon visibility versus rotation angle. Mode selection with apertures allows one to tune the dimensionality of the entanglement; mode selection with spiral phase plates and fibers allows detection of a single OAM mode. The experiment is analyzed in two different ways: either via the continuous two-photon amplitude function or via a discrete modal (Schmidt) decomposition of this function. The latter approach proves to be very fruitful, as it provides a complete characterization of the OAM entanglement.

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