Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 58: Poster: Quantum Optics and Photonics IV
Q 58.25: Poster
Donnerstag, 3. März 2016, 16:30–19:00, Empore Lichthof
Entanglement of Polarization and Orbital Angular Momentum — •Daniel Bhatti1,3, Joachim von Zanthier1,3, and Girish S. Agarwal2 — 1Institut für Optik, Information und Photonik, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany — 2Department of Physics, Oklahoma State University, Stillwater, OK, USA — 3Erlangen Graduate School in Advanced Optical Technologies (SAOT), Universität Erlangen-Nürnberg, 91052 Erlangen, Germany
It is known that for identical particles entangled states can be constructed using different degrees of freedom, e.g., linear momentum and polarization. Recently it was shown that also orbital angular momentum (OAM), another degree of freedom of the radiation field, can be employed for entanglement generation [1]. We discuss the particular case of two photons with the same linear momentum but entangled in polarization and OAM degrees of freedom [2]. We show how to produce such entangled states and use the recently introduced concept of duality [3,4] to perform entanglement sorting. Here, the entangled character can be detected by studying either polarization variables or OAM variables using appropriate witnesses. In both cases identical information is obtained if the particles are indistinguishable. We also present generalizations to three- and four-photon entangled states.
[1] A. Mair, et al., Nature 412, 313 (2001).
[2] D. Bhatti, J. von Zanthier, G. S. Agarwal, Phys. Rev. A 91, 062303 (2015).
[3] S. Bose, D. Home, Phys. Rev. Lett. 110, 140404 (2013).
[4] J.-J. Ma, et al., New Journal of Physics 16, 083011 (2014).