The Jaynes–Cummings Model (JCM) has recently been receiving increased attention as
one of the simplest, yet intricately nonlinear, models of quantum physics. Emphasising the …

Nobel Lecture: Superposition, entanglement, and raising Schrodinger ’s cat* Page 1 Nobel
Lecture: Superposition, entanglement, and raising Schrodinger ’s cat* David J. Wineland …

Heat engines convert thermal energy into mechanical work and generally involve a large
number of particles. We report the experimental realization of a single-atom heat engine. An …

According to quantum mechanics, a harmonic oscillator can never be completely at rest.
Even in the ground state, its position will always have fluctuations, called the zero-point …

We consider a quantum Otto cycle for a time-dependent harmonic oscillator coupled to a
squeezed thermal reservoir. We show that the efficiency at maximum power increases with …

Single trapped ions represent elementary quantum systems that are well isolated from the
environment. They can be brought nearly to rest by laser cooling, and both their internal …

By coupling a macroscopic mechanical oscillator to two microwave cavities, we
simultaneously prepare and monitor a nonclassical steady state of mechanical motion. In …

Methods for, and limitations to, the generation of entangled states of trapped atomic ions are
examined. As much as possible, state manipulations are described in terms of quantum …

We investigate the properties of angular-momentum states which yield high sensitivity to
rotation. We discuss the application of these ''squeezed-spin''or correlated-particle states to …

The superposition principle plays the most central role in all considerations of quantum
information, and in most of the" gedanken" experiments and even the paradoxes of quantum …