Quantum computing and single-qubit measurements using the spin-filter effect (invited)
- 15 April 1999
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 85 (8) , 4785-4787
- https://doi.org/10.1063/1.370481
Abstract
Many things will have to go right for quantum computation to become a reality in the lab. For any of the presently-proposed approaches involving spin states in solids, an essential requirement is that these spins should be measured at the single-Bohr-magneton level. Fortunately, quantum computing provides a suggestion for a new approach to this seemingly almost impossible task: convert the magnetization into a charge, and measure the charge. I show how this might be done by exploiting the spin filter effect provided by ferromagnetic tunnel barriers, used in conjunction with one-electron quantum dots.Comment: 11 pages, LaTeX, 1 figure. To be published in J. Appl. Phys., paper given at the 43rd Annual MMM ConferencAll Related Versions
This publication has 21 references indexed in Scilit:
- Quantum computation with quantum dotsPhysical Review A, 1998
- Quantum Manipulations of Small Josephson JunctionsPhysical Review Letters, 1997
- Homogeneous Linewidths in the Optical Spectrum of a Single Gallium Arsenide Quantum DotScience, 1996
- Quantum ComputationScience, 1995
- Examining Nanoenvironments in Solids on the Scale of a Single, Isolated Impurity MoleculeScience, 1994
- Variation of the electron-spin polarization in EuSe tunnel junctions from zero to near 100% in a magnetic fieldPhysical Review Letters, 1993
- Single-electron transfer in metallic nanostructuresNature, 1992
- Mechanical detection of magnetic resonanceNature, 1992
- Macroscopic Quantum Effects in Nanometer-Scale MagnetsScience, 1992
- Electron-Spin Polarization in Tunnel Junctions in Zero Applied Field with Ferromagnetic EuS BarriersPhysical Review Letters, 1988