Theory of Fast Quantum Control of Exciton Dynamics in Semiconductor Quantum Dots

Details Theory of Fast Quantum Control of Exciton Dynamics in Semiconductor Quantum Dots Theory of Fast Quantum Control of Exciton Dynamics in Semiconductor Quantum Dots

2001-09-13

arxiv.org/abs/cond-mat/0109252v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages,5 figures

Scientific paper

10.1103/PhysRevB.65.075307

Optical techniques for the quantum control of the dynamics of multiexciton states in a semiconductor quantum dot are explored in theory. Composite bichromatic phase-locked pulses are shown to reduce the time of elementary quantum operations on excitons and biexcitons by an order of magnitude or more. Analytic and numerical methods of designing the pulse sequences are investigated. Fidelity of the operation is used to gauge its quality. A modified Quantum Fourier Transform algorithm is constructed with only Rabi rotations and is shown to reduce the number of operations. Application of the designed pulses to the algorithm is tested by a numerical simulation.

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