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arXiv:cond-mat/0102482 · Physical Review Letters

Control of Exciton Dynamics in Nanodots for Quantum Operations

Pochung Chen, Carlo Piermarocchi, Lu Jeu Sham

Published Jul 18, 2001• 207 citations
arXivHTMLPDF

Abstract

We present a theory to further a new perspective of proactive control of exciton dynamics in the quantum limit. Circularly polarized optical pulses in a semiconductor nanodot are used to control the dynamics of two interacting excitons of opposite polarizations. Shaping of femtosecond laser pulses keeps the quantum operation within the decoherence time. Computation of the fidelity of the operations and application to the complete solution of a minimal quantum computing algorithm demonstrate in theory the feasibility of quantum control.

DOI
10.1103/physrevlett.87.067401

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