Introduction.
This issue, the largest issue of Optics Express to date, focuses on some recent developments in the generation and application of novel quantum states of light, particularly those quantum states of light that manifest one or more of the following characteristics upon detection: quadrature squeezing, sub-Poissonian photon statistics, or nonclassical photon correlation. The interest in such quantum states of light stems not only from their fundamental importance, but also from their potential utility in practical applications. The sensitivity of many optical measurements that can be made with laser light can be enhanced by use of such light states.
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