Jack, B., Yao, A.M., Leach, J., Romero, J., Franke-Arnold, S. , Ireland, D.G. , Barnett, S.M. and Padgett, M.J. (2010) Entanglement of arbitrary superpositions of modes within two-dimensional orbital angular momentum state spaces. Physical Review A: Atomic, Molecular and Optical Physics, 81(4), 043844. (doi: 10.1103/PhysRevA.81.043844)
Full text not currently available from Enlighten.
Abstract
We use spatial light modulators (SLMs) to measure correlations between arbitrary superpositions of orbital angular momentum (OAM) states generated by spontaneous parametric down-conversion. Our technique allows us to fully access a two-dimensional OAM subspace described by a Bloch sphere, within the higher-dimensional OAM Hilbert space. We quantify the entanglement through violations of a Bell-type inequality for pairs of modal superpositions that lie on equatorial, polar, and arbitrary great circles of the Bloch sphere. Our work shows that SLMs can be used to measure arbitrary spatial states with a fidelity sufficient for appropriate quantum information processing systems.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Padgett, Professor Miles and Franke-Arnold, Professor Sonja and Leach, Mr Jonathan and Barnett, Professor Stephen and Ireland, Professor David and Romero, Dr Jacqui |
| Authors: | Jack, B., Yao, A.M., Leach, J., Romero, J., Franke-Arnold, S., Ireland, D.G., Barnett, S.M., and Padgett, M.J. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Physical Review A: Atomic, Molecular and Optical Physics |
| Publisher: | American Physical Society |
| ISSN: | 1050-2947 |
| ISSN (Online): | 1094-1622 |
| Published Online: | 30 April 2010 |
University Staff: Request a correction | Enlighten Editors: Update this record
Altmetric
Altmetric