Control of Spin Dynamics of Excitons in Nanodots for Quantum Operations

Details Control of Spin Dynamics of Excitons in Nanodots for Quantum Operations Control of Spin Dynamics of Excitons in Nanodots for Quantum Operations

2001-02-27

arxiv.org/abs/cond-mat/0102482v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.87.067401

This work presents a step furthering a new perspective of proactive control of the spin-exciton dynamics in the quantum limit. Laser manipulation of spin-polarized optical excitations in a semiconductor nanodot is used to control the spin dynamics of two interacting excitons. 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 basic quantum computing algorithm demonstrate in theory the feasibility of quantum control.

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