Abstract
We have used a two-mode optical parametric oscillator operating above threshold to generate high-intensity twin beams which exhibit quantum correlations. The noise power measured on the intensity difference between two such beams is reduced by 30% below the shot-noise limit. Noise reduction is observed over a broad range of frequencies.
- Received 3 August 1987
DOI:https://doi.org/10.1103/PhysRevLett.59.2555
©1987 American Physical Society
