Twin photons entangled in polarization and angular momentum

G. A. Barbosa

doi:10.1140/epjd/e2003-00004-2

EPJ

Twin photons entangled in polarization and angular momentum

G. A. Barbosa^a

Center for Photonic Communication and Computing, ECE Department, Northwestern University, 2145 N. Sheridan Rd., Evanston, IL 60208-3118, USA

Received: 30 August 2002
Revised: 10 October 2002
Published online: 21 January 2003

Abstract

Quantum states of twin photons entangled in angular momentum and polarization provide new degrees of freedom to researchers in quantum information and imaging. This work discuss these states and also emphasizes differences between two proposed models for twin photons entangled in angular momentum. Answers to the presented questions would contribute to a better understanding of this nonlinear process.

PACS: 42.50.-p – Quantum optics / 03.65.Ud – Entanglement and quantum nonlocality (e.g. EPR paradox, Bell's inequalities, GHZ states, etc.) / 03.67.-a – Quantum information