Semiconductor-based Geometrical Quantum Gates

Details Semiconductor-based Geometrical Quantum Gates Semiconductor-based Geometrical Quantum Gates

2002-07-03

arxiv.org/abs/quant-ph/0207019v2

Phys. Rev. B 67, 121307 (2003)

Physics

Quantum Physics

4 Pages LaTeX, 3 Figures included. To appear in PRB (Rapid Comm.)

Scientific paper

10.1103/PhysRevB.67.121307

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.

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