Coherent preparation by laser light of quantum states of atoms and molecules can lead to
quantum interference in the amplitudes of optical transitions. In this way the optical …

The paper gives an overview of the use of the coherent population trapping phenomenon
(CPT) in alkali-metal atoms in the implementation of atomic frequency standards. Several …

E lectromagnetically induced transparency is a technique for eliminating the effect of a
medium on a propagating beam of electromagnetic radiation. EIT may also be used, but …

We develop a theory of electromagnetically induced transparency in a three-level, ladder-
type Doppler-broadened medium, paying special attention to the case where the coupling …

The dispersive properties of the atomic transition in the rubidium D 2 line (5 S 1 2− 5 P 3 2)
at 780.0 nm are measured with a Mach-Zehnder interferometer when an additional coupling …

Positive and negative subnatural-width resonances (SNWR) were observed in the
absorption and fluorescence of rubidium vapor under excitation by two copropagating …

We utilize a homodyne detection technique to achieve a new sensitivity limit for atom-based,
absolute radio-frequency electric field sensing of 5 μ V cm− 1 Hz− 1/2. A Mach-Zehnder …

Semiconductors have uniquely attractive properties for electronics and photonics. However,
it has been difficult to find a highly coherent quantum state in a semiconductor for …

Abstract. Using optical phase-locking and a buffer gas, coherent population trapping
resonances with linewidths below 50 Hz can be observed in a thermal cesium vapor …

We predict the possibility of sharp, high-contrast resonances in the optical response of a
broad class of systems, wherein interference effects are generated by coherent perturbation …