Quantum Computation with Ballistic Electrons
Abstract
We describe a solid state implementation of a quantum computer using ballistic single electrons as flying qubits in 1D nanowires. We show how to implement all the steps required for universal quantum computation: preparation of the initial state, measurement of the final state and a universal set of quantum gates. An important advantage of this model is the fact that we do not need ultrafast optoelectronics for gate operations. We use cold programming (or preprogramming), i.e. the gates are set before launching the electrons; all programming can be done using static electric fields only.
 Publication:

International Journal of Modern Physics B
 Pub Date:
 2001
 DOI:
 10.1142/S0217979201003521
 arXiv:
 arXiv:quantph/0011051
 Bibcode:
 2001IJMPB..15..125I
 Keywords:

 03.67.Lx;
 85.30.S;
 85.30.V;
 Quantum computation;
 Quantum Physics;
 Condensed Matter  Mesoscale and Nanoscale Physics;
 Physics  Computational Physics
 EPrint:
 5 pages, RevTeX4, 5 figures, uses epsf, latexsym, times