Novel Techniques for Quantum State Manipulation in Mesoscopic Systems
Abstract
The most recent results achieved: We showed that electron spin flips are dominated by nuclear interactions and are slowed by several orders of magnitude when a magnetic field of a few millitesla is applied. We demonstrated coherent control of a quantum two-level system based on two-electron spin states in a double quantum dot allowing state preparation, coherent manipulation, and projective read-out. We showed how realistic charge manipulation and measurement techniques, combined with the exchange interaction, allowed for the robust generation and purification of four particle spin entangled states in electrically controlled semiconductor quantum dots. We developed an architecture for quantum computation using electrically controlled semiconductor spins. We described a novel method for precise estimation of the nuclear spin polarization of quantum dot via manipulation and measurement of a single electron spin.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 05, 2005
- Accession Number
- ADA441535
Entities
People
- Mikhail Lukin
Organizations
- Harvard University