Quantum-Information Processing with Semiconductor Macroatoms
摘要
An all optical implementation of quantum information processing with semiconductor macroatoms is proposed. Our quantum hardware consists of an array of semiconductor quantum dots and the computational degrees of freedom are energy-selected interband optical transitions. The proposed quantum-computing strategy exploits exciton-exciton interactions driven by ultrafast sequences of multi-color laser pulses. Contrary to existing proposals based on charge excitations, the present all-optical implementation does not require the application of time-dependent electric fields, thus allowing for a sub-picosecond, i.e. decoherence-free, operation time-scale in realistic state-of-the-art semiconductor nanostructures.
引用
@article{arxiv.quant-ph/0007034,
title = {Quantum-Information Processing with Semiconductor Macroatoms},
author = {Eliana Biolatti and Rita C. Iotti and Paolo Zanardi and Fausto Rossi},
journal= {arXiv preprint arXiv:quant-ph/0007034},
year = {2009}
}
备注
11 pages, 5 figures, to be published in Phys. Rev. Lett., significant changes in the text and new simulations (figure 3)