Quantum and Collective Effects in Information Processing and Communication
Abstract
The original aim of this MURI was to combine an experimental effort to develop tools to manipulate quantum coherence in the solid state. based on metallic wires, quantum point contacts, and the quantum Hall effect, with theoretical efforts aimed at understanding device architectures and the information capacity of quantum channels. The Marcus group aims to develop locally controlled magnetic fields in the vicinity of quantum point contacts and to develop novel heterostructure-based spin detectors. Both Marcus and Yamamoto have investigated the so-called 0.7 structure as a means of generating spin filtering properties and are actively pursuing the use of this feature in a quantum point contact as a spin filter. Marcus has demonstrated that the magnetic orientation of the gates can be flipped using on-chip current lines. Yamamoto is presently working to realize this device in a Hall-bar geometry in a high mobility GaAs heterostucture. Gershenson has focused on the role of electron spin in the 2D metal insulator transition, which may have important implications for 2D spin-tronic transisitors in semiconductors.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1999
- Accession Number
- ADA391449
Entities
People
- Charles M. Marcus
Organizations
- Stanford University