Exploiting exciton-exciton interactions in semiconductor quantum dots for quantum-information processing

Details Exploiting exciton-exciton interactions in semiconductor quantum dots for quantum-information processing Exploiting exciton-exciton interactions in semiconductor quantum dots for quantum-information processing

2000-05-17

arxiv.org/abs/quant-ph/0005064v1

Phys. Rev. B v62, R2263 (2000).

Physics

Quantum Physics

5 pages revtex, 2 encapsulated postscript figures. Accepted for publication in Phys. Rev. B (Rapid Communication)

Scientific paper

10.1103/PhysRevB.62.R2263

We propose an all-optical implementation of quantum-information processing in semiconductor quantum dots, where electron-hole excitations (excitons) serve as the computational degrees of freedom (qubits). We show that the strong dot confinement leads to an overall enhancement of Coulomb correlations and to a strong renormalization of the excitonic states, which can be exploited for performing conditional and unconditional qubit operations.

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