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Quantum Information in Semiconductors: Noiseless Encoding in a Quantum-Dot Array

Paolo Zanardi·Fausto Rossi
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Abstract

A potential implementation of quantum-computation schemes in semiconductor-based structures is proposed. In particular, an array of quantum dots is shown to be an ideal quantum register for a noiseless information encoding. In addition to the suppression of phase-breaking processes in quantum dots due to the well-known phonon bottleneck, we show that a proper quantum encoding allows to realise a decoherence-free evolution on a time-scale long compared to the femtosecond scale of modern ultrafast laser technology. This result might open the way to the realization of semiconductor-based quantum processors.

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Paolo Zanardi, Fausto Rossi. 1998-11-20. Quantum Information in Semiconductors: Noiseless Encoding in a Quantum-Dot Array. https://doi.org/10.1103/physrevlett.81.4752

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