Studies of Semiconductor Quantum Dots for Quantum Information Processing

Yanwen Wu, Xiaoqin Li, Duncan G. Steel +2 more

T. Fujisawa

Daniel Loss

Filippo Troiani, Ulrich Hohenester, Elisa Molinari

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). The strong dot confinement leads to a strong renormalization of excitonic states, which, in analogy to NMR-based implementations of quantum-information processing, can be exploited for performing conditional and unconditional qubit operations.

Fabio Baruffa

Filippo Troiani, Ulrich Hohenester, Elisa Molinari

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.