title: Quantum information processing with semiconductor macroatoms.
abstract: An all optical implementation of quantum information processing with semiconductor macroatoms is proposed. Our quantum hardware consists of an array of quantum dots and the computational degrees of freedom are energy-selected interband optical transitions. The quantum-computing strategy exploits exciton-exciton interactions driven by ultrafast multicolor laser pulses. Contrary to existing proposals based on charge excitations, our approach does not require time-dependent electric fields, thus allowing for a subpicosecond, decoherence-free, operation time scale in realistic semiconductor nanostructures.
authors.affiliation: Istituto Nazionale per la Fisica della Materia (INFM), Torino, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Biolatti
authors.forename: R C
authors.initials: RC
authors.lastname: Iotti
authors.forename: P
authors.initials: P
authors.lastname: Zanardi
authors.forename: F
authors.initials: F
authors.lastname: Rossi