Quantum computation with quantum dot excitons
Abstract
Potential application of elementary excitation in semiconductor quantum dot to quantum computation is discussed. We propose a scalable hardware and all optical implementation of a logic gate that exploits the discrete nature of electronhole states and their wellconcentrated oscillator strength for ultrafast gate operation. A multiplebit gate function is based on the nearest neighbour dipoledipole coupling. Rabi population oscillation and longlived coherence of an excitonic twolevel system in an isolated In_{x}Ga_{1x}As quantum dot guarantees quantum gate functions. Technologies that will realize and facilitate the exciton quantum computing are discussed.
 Publication:

Semiconductor Science Technology
 Pub Date:
 April 2004
 DOI:
 10.1088/02681242/19/4/129
 Bibcode:
 2004SeScT..19S.392K