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 one to realize 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.

Noiseless encoding in a quantum-dot array / Zanardi, P.; Rossi, Fausto. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 81:21(1998), pp. 4752-4755. [10.1103/PhysRevLett.81.4752]

Noiseless encoding in a quantum-dot array

ROSSI, FAUSTO
1998

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 one to realize 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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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/1405206
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