Quantum Features of Light

Davıd L. Andrews

Md Mohaiminul Islam Jahan, Md Fahim Abdullah, Orbe, Nabil, Kowsar +4 more

Luca Salasnich, Francesco Lorenzi

Eugene Simon Polzik, Jan Hald, Jens Lykke Sørensen

In the last few years a new field, atomic physics and spectroscopy with non-classical, squeezed light, has emerged. The frequency tunable sources of such light utilize tunable lasers and frequency doubling and/or parametric down conversion to create quantum correlations between frequency components of radiation [1–5]. The non-classical features of light result in manifestly non-classical features of spectral lines, namely in the rate of atomic processes, in the line shapes, and in the level of quantum noise in atomic spectroscopy. Moreover, the non-classical features of light can be transferred onto atoms leading to their manifestly non-classical behavior. We will briefly review some theoretical proposals and experimental results in this new area.

Barry C. Sanders, Dien A. Rice

Summary form only given. The nonlinear interferometer using coherent light as input can exhibit remarkable quantum features. One of these features is the production of entangled coherent states, a nontrivial generalization of the optical Schrodinger cat states. Another feature is the production of squeezed light in a Sagnac interferometer with a Kerr nonlinearity.