Identifying the orbital angular momentum of light based on atomic ensembles

2012/07/10 by Liang Han, Mingtao Cao, Ruifeng Liu +7 · 19 citations
Computer Science · Physics and Astronomy · #Angular momentum #Angular momentum coupling #Atom optics #Atomic beam #Beam (structure) #Field (mathematics) #Orbital Angular Momentum in Optics #Orbital angular momentum of light #Phase (matter) #Quantum Information and Cryptography #Quantum optics and atomic interactions #Transverse plane #physics.atom-ph #physics.optics #quant-ph

paper · pdf · doi:10.1209/0295-5075/99/34003

published in Europhysics Letters (EPL) 99(3), 34003 (Institute of Physics) · 4 pages, 4 figures

arxiv created 2012/07/10 · openalex publication_date 2012/08/01 · arxiv updated 2012/08/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We propose a scheme to distinguish the orbital angular momentum state of the Laguerre-Gaussian (LG) beam based on the electromagnetically induced transparency modulated by a microwave field in atomic ensembles. We show that the transverse phase variation of a probe beam with the LG mode can be mapped into the spatial intensity distribution due to the change of atomic coherence caused by the microwave. The proposal may provide a useful tool for studying higher-dimensional quantum information based on atomic ensembles.

Citations

• Narrowing of electromagnetically induced transparency resonance in a Doppler-broadened medium
• Electromagnetically induced transparency controlled by a microwave field
• Orbital angular momentum of light and the transformation of Laguerre-Gaussian laser modes
• Long-distance quantum communication with atomic ensembles and linear optics

Cited by

• Identifying orbital angular momentum of light in quantum wells