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Optically Driven Qubits in Artificial Molecules

J. H. Oh·D. Ahn·S. W. Hwang
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Abstract

We present novel models of quantum gates based on coupled quantum dots in which a qubit is regarded as the superposition of ground states in each dot. Coherent control on the qubit is performed by both a frequency and a polarization of a monochromatic light pulse illuminated on the quantum dots. We also show that a simple combination of two single qubit gates functions as a controlled NOT gate resulting from an electron-electron interaction. To examine the decoherence of quantum states, we discuss electronic relaxation contributed mainly by LA phonon processes.

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J. H. Oh, D. Ahn, S. W. Hwang. 2000-05-17. Optically Driven Qubits in Artificial Molecules. https://doi.org/10.1103/physreva.62.052306

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