Abstract
We generate intensity-difference-squeezed Laguerre-Gauss twin beams of light carrying orbital angular momentum by using four-wave mixing in a hot atomic vapor. The conservation of orbital angular momentum in the four-wave mixing process is studied as well as the spatial distribution of the quantum correlations obtained with different configurations of orbital angular momentum. Intensity-difference squeezing of up to -6.7dB is demonstrated with beams carrying orbital angular momentum. Delocalized spatial correlations between the twin beams are observed.
| Original language | English |
|---|---|
| Article number | 093602 |
| Journal | Physical Review Letters |
| Volume | 101 |
| Issue number | 9 |
| DOIs | |
| State | Published - Aug 27 2008 |
| Externally published | Yes |