Abstract

Currently available squeezed and twin-beams sources generate quantum-noise reduction around a fixed carrier frequency, whereas for spectroscopic application^[1] tunability of the carrier frequency is desirable. Recently we proposed that quantum frequency conversion (QFC), a process in which an input beam of light is converted into an output beam of a different frequency while preserving the quantum state, could be used to obtain frequency tunable quantum states of light.^[2] In this Paper we report on the first, to the best of the authors’ knowledge, observation of QFC.

© 1992 IQEC