We propose an implementation scheme for holonomic, i.e., geometrical, quantum information processing based on semiconductor nanostructures. Our quantum hardware consists of coupled semiconductor macroatoms addressed/controlled by ultrafast multicolor laser-pulse sequences. More specifically, logical qubits are encoded in excitonic states with different spin polarizations and manipulated by adiabatic time-control of the laser amplitudes . The two-qubit gate is realized in a geometric fashion by exploiting dipole-dipole coupling between excitons in neighboring quantum dots.
@article{arxiv.quant-ph/0207019,
title = {Semiconductor-based Geometrical Quantum Gates},
author = {Paolo Solinas and Paolo Zanardi and Nino Zangh\`ı and Fausto Rossi},
journal= {arXiv preprint arXiv:quant-ph/0207019},
year = {2009}
}
Comments
4 Pages LaTeX, 3 Figures included. To appear in PRB (Rapid Comm.)