Semiconductor-based geometrical quantum gates
Paolo Solinas, Paolo Zanardi A, Nino Zanghı̀ +1 more
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.
arXiv:quant-ph/0207019•Physical review. B, Condensed matter•Mar 26, 2003•125 citations