0207019v2

related topics
{phase, path, phys}
{state, phys, rev}
{qubit, qubits, gate}
{time, decoherence, evolution}
{spin, pulse, spins}
{level, atom, field}
{energy, state, states}
{trap, ion, state}
{cos, sin, state}
{error, code, errors}

Semiconductor-based Geometrical Quantum Gates

Paolo Solinas, Paolo Zanardi, Nino Zanghì, Fausto Rossi

abstract: 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.

oai_identifier:
oai:arXiv.org:quant-ph/0207019
categories:
quant-ph
comments:
4 Pages LaTeX, 3 Figures included. To appear in PRB (Rapid Comm.)
doi:
10.1103/PhysRevB.67.121307
arxiv_id:
quant-ph/0207019
journal_ref:
Phys. Rev. B 67, 121307 (2003)
created:
2002-07-03
updated:
2003-02-13

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