THE EFFECT OF STATIONARY UV EXCITATION ON THE OPTICAL BEHAVIOR OF ELECTROCHEMICALLY SELF-ASSEMBLED SEMICONDUCTOR NANOWIRES By Rajesh A. Katkar, M.S. A Dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at Virginia Commonwealth University. Virginia Commonwealth University, 2006 Major Director: Dr. Gregory B. Tait Associate Professor, Electric...

Rydberg atom arrays offer flexible geometries of strongly interacting neutral atoms, which are useful for many quantum applications such as simulation and computation. Here, we consider an all-optical gate-based computing scheme the arrays, in auxiliary atoms (wire atoms) used a mean quantum-mechanical remote-couplings among data-qubit optical individual-atom addressing data wire is to construc...

We study charge and spin pumping in an interacting one-dimensional wire. We show that a spatially periodic potential modulated in space and time acts as a quantum pump, inducing a dc–current component at zero bias. The current generated by the pump is strongly affected by the interactions. It has a power-law dependence on the frequency or temperature, with the exponent determined by the interac...

One-dimensional structures are expected to show unique electronic transport behavior as a consequence of the Coulomb interaction between carriers. A considerable number of theoretical predictions remain largely untested by experiment due to a lack of a suitable one-dimensional wire. Using a new crystal growth technique a unique tube-like structure with a cross section of 25 nm x 25 nm has been ...

We propose that a pseudospin ferromagnetic (i.e., interwire coherent) state can exist in a system of two parallel wires of finite width in the presence of a perpendicular magnetic field. This novel quantum many-body state appears when the interwire distance decreases below a certain critical value which depends on the magnetic field. We determine the phase boundary of the ferromagnetic phase by...

The binding energies as well as wave functions of hydrogenic impurities located in V-groove GaAs/AlxGa1−xAs quantum wires are calculated for different positions of the impurity inside the wires. The variational method is used and the carrier ground states are analytically calculated by an effective potential scheme together with a suitable coordinate transformation that allows the decoupling of...