Analysis and interpretation of high transverse entanglement in optical parametric down conversion

Details Analysis and interpretation of high transverse entanglement in optical parametric down conversion Analysis and interpretation of high transverse entanglement in optical parametric down conversion

2003-12-10

arxiv.org/abs/quant-ph/0312088v1

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.92.127903

Quantum entanglement associated with transverse wave vectors of down conversion photons is investigated based on the Schmidt decomposition method. We show that transverse entanglement involves two variables: orbital angular momentum and transverse frequency. We show that in the monochromatic limit high values of entanglement are closely controlled by a single parameter resulting from the competition between (transverse) momentum conservation and longitudinal phase matching. We examine the features of the Schmidt eigenmodes, and indicate how entanglement can be enhanced by suitable mode selection methods.

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