Noiseless amplification in cavity-based optical systems with an internal two-photon process.

Stefano Mancini, A. Gatti, L. A. Lugiato

Kumar

L. A. Lugiato, A. Pregnolato, Lorenzo Spinelli

We study the features of noiseless amplification in a general class of optical systems, characterized by an intracavity nonlinearity which induces a two-photon process, in the limit where the damping constant of the mode which undergoes the two-photon process greatly exceeds all other relaxation rates of the system. By applying a previously formulated analytical approach, we write the universal-form expressions for the linear amplification factor and the noise figure. Noiseless amplification is attainable under resonance conditions.

A. Pregnolato, Lorenzo Spinelli, Luigi A. Lugiato +1 more

We consider a cavity containing both a χ(2)-nonlinear material and a laser two-level medium for the cases of self-frequency-doubling and self-down-converting configurations. For both situations, the squeezing properties of the two fields are analysed in detail, while special attention is devoted to the problem of ‘noiseless amplification’ of a small monochromatic signal injected in the lower frequency mode.

Horace P. Yuen

В. Н. Горбачев, A. S. Troshin, Andrew I. Trubilko