In a linear r.f. Paul trap, ‘crystallized’ structures of laser-cooled 199Hg+io ns are observed. The ground-state hyperfine transition at 40.5 GHz is observed in microwave-optical double-resonance spectroscopy. Future prospects are also discussed.

Experiments directed toward the realization of frequency standards of high accuracy using stored ions are briefly summarized. In one experiment, an RF oscillator is locked to a nuclear spin-flip hyperfine transition (frequency approximately 3.03×10(8) Hz) in (9 )Be(+) ions that are stored in...

We calculate the spontaneous-emission spectrum and the spectrum of weakly driven fluorescence for a two-level atom coupled to a resonant-cavity mode. For strong atom-cavity coupling the spectra split into two peaks that can have subnatural linewidths. If the cavity linewidth is negligible, the spontaneous-emission...

An investigation of the radiative processes for a collection of N two-state atoms strongly coupled to the field of a high-finesse optical cavity is presented. Observations of the spectral response of the composite system to weak external modulation reveal a coupling-induced normal-mode splitting....

Experiments to generate squeezed states of light are described for a collection of two-level atoms within a highfinesse cavity. The investigation is conducted in a regime for which the weak-field coupling of atoms to the cavity mode produces a splitting in the normal mode structure of the atom-field...

A new regime for the generation of squeezed states of the electromagnetic field is described for a collection of atoms within a high-finesse cavity. The process responsible for squeezing is a coupling-induced splitting in the normal-mode structure of the atom-field system. A theoretical analysis...

Evidence is presented for low-dimensional strange attractors in Couette-Taylor flow data.  Computations of the largest Lyapunov exponent and metric entropy show that the system displays sensitive dependence on initial conditions.  Although the phase space is very high dimensional, analysis of experimental...

Motion of cells, and motion within cells, often entails fluctuations that have a strongly Brownian character.  However, these motions are driven by the molecular motors within the cells, rather than by thermal motion.  This talk will describe the use of simple optical methods to measure this motion,...