Abstract

Widely frequency tunable bright sub-Poissonian field preparation has been experimentally achieved with quantum-correlated twin beams in the continuously variable regime. The noise of the sub-Poissonian field is reduced to more than $2\mathrm{dB}$ below the shot-noise level throughout the entire wavelength-tunable range of $7.4\mathrm{nm}$. A maximum noise reduction of 45% $\left(2.6\mathrm{dB}\right)$ is observed. The statistical distribution of a sub-Poissonian field is also obtained.

© 2006 Optical Society of America

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