Quantum Coherent Effects in the Presence of External Control Fields
by
Robert Badzey
Boston University
Coauthors: Doru Cuturella, Pritiraj Mohanty

Electron coherence effects, such as the Aharonov-Bohm effect, have been the focus of much interest in condensed matter physics over the past few decades. At low temperatures, low-dimensional conductors demonstrate electron coherence even in the presence of a disordered potential. Here we present results from our initial investigations into applying quantum control methods to coherent electron systems. We examine the effects external control fields, both broadband and pulsed, have on an Aharonov-Bohm ring sample. We discuss the potential for quantum control of electron coherence through the use of both passive control and bang-bang pulses with learning control.

Date received: March 31, 2004