We report the direct observation of quantum dynamical tunneling of atoms between
separated momentum regions in phase space. We study how the tunneling oscillations are …

In their famous 1927 experiment, Davisson and Germer observed the diffraction of electrons
by a periodic material structure, so showing that electrons can behave like waves. Shortly …

The interface between nonlinear dynamics and quantum mechanics has become an active
area of research in recent years. This emerging field, known as quantum chaos, has focused …

Bragg scattering has been observed for free electrons using a standing wave of light. Both
the rocking curve and the angular electron distribution have been measured. The results of a …

We consider the case of a cubic nonlinear Schrödinger equation with an additional chaotic
potential, in the sense that such a potential produces chaotic dynamics in classical …

We report studies of the motion of cold atoms in a time-dependent optical potential. The
dynamics of our system are that of the quantum kicked rotor, and exhibit a wide variety of …

We generalize the discrete quantum walk on the line using a time-dependent unitary coin
operator. We find an analytical relation between the long-time behaviors of the standard …

Atomic motion in pulsed, periodic optical potentials provides a unique experimental testing
ground for quantum chaos. In the first generation of experiments with sodium atoms we …

We discuss two different aspects of the dynamics of ultracold atoms in periodically driven
optical lattices. We consider the reorganization of the quantum mechanical level structure …

We study all possible configurations (V, Λ, Ξ) of a three-level atom coupled to a single-mode,
frequency-tunable cavity field with a pre-selected polarization in the bad cavity limit, and …