We use the phase difference of two lasers with equal frequencies for the control of
spontaneous emission in a four-level system. Effects such as extreme spectral narrowing …

Control of amplitude and phase of the driving field in an atom-field interaction leads towards
the strong line narrowing and quenching in the spontaneous emission spectrum. We exploit …

Applications of the method of multiple scales to the quantum-optical problems are reviewed.
After a preliminary study of applications to the classical and quantum anharmonic oscillator …

In this paper we present a detailed treatment of the ac Stark effect of a three-level atom
driven by two strong laser fields in a cascade scheme. We consider two situations where …

In a three-level atomic system coupled by two equal-amplitude laser fields with a frequency
separation 2δ, a weak probe field exhibits a multiple-peaked absorption spectrum with a …

We analyze the fluorescence and absorption spectra of a two-level atom driven by a
bichromatic field with frequencies ω 1 and ω 2, separated by ω 2-ω 1= 2δ, and Rabi …

We present a detailed experimental study of the frequency-modulated excitation of a two-
level atom, using a microwave field to drive transitions between two Rydberg Stark states of …

We study the spectrum and statistical properties of photons scattered from a semiconductor-
quantum-dot–metal-nanoparticle system under monochromatic and bichromatic excitations …

We report an experimental observation of doubly dressed states in 87 Rb atoms cooled and
confined in a magneto-optical trap. The doubly dressed states are produced by a strong …

A two-level quantum emitter with broken inversion symmetry simultaneously driven by an
optical field and a microwave field that couples to the permanent dipole's moment is …