Quantum computation with quantum dots
Abstract
We propose an implementation of a universal set of one- and two-quantum-bit gates for quantum computation using the spin states of coupled single-electron quantum dots. Desired operations are effected by the gating of the tunneling barrier between neighboring dots. Several measures of the gate quality are computed within a recently derived spin master equation incorporating decoherence caused by a prototypical magnetic environment. Dot-array experiments that would provide an initial demonstration of the desired nonequilibrium spin dynamics are proposed.
- Publication:
-
Physical Review A
- Pub Date:
- January 1998
- DOI:
- arXiv:
- arXiv:cond-mat/9701055
- Bibcode:
- 1998PhRvA..57..120L
- Keywords:
-
- 03.67.Lx;
- 89.70.+c;
- 75.10.Jm;
- 89.80.+h;
- Quantum computation;
- Information theory and communication theory;
- Quantized spin models;
- Condensed Matter - Mesoscale and Nanoscale Physics;
- Quantum Physics
- E-Print:
- 12 pages, Latex, 2 ps figures. v2: 20 pages (very minor corrections, substantial expansion), submitted to Phys. Rev. A