Decoherence of quantum states and its suppression in ensemble large-scale solid state NMR quantum computers

Alexander A. Kokin

doi:10.1117/12.517916

23 July 2003 Decoherence of quantum states and its suppression in ensemble large-scale solid state NMR quantum computers

Alexander A. Kokin

Author Affiliations +

Proceedings Volume 5128, First International Symposium on Quantum Informatics; (2003) https://doi.org/10.1117/12.517916
Event: First International Symposium on Quantum Informatics, 2002, Lipki, Russian Federation

Abstract

It is discussed the decoherence problems in ensemble large-scale solid state NMR quantum computer based on the array of 31P donor atoms having nuclear spin I=1/2. It is considered here, as main mechanisms of decoherence for low temperature (<0.1K), the adiabatic processes of random modulation of qubit resonance frequency determined by secular part of nuclear spin interaction with electron spin of the basic atoms, with impurity paramagnetic atoms and also with nuclear spins of impurity and of spin temperature whereby the required decoherence suppression is obtained. It is discussed the random phase error suppression in the ensemble quantum register basic states.

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Alexander A. Kokin "Decoherence of quantum states and its suppression in ensemble large-scale solid state NMR quantum computers", Proc. SPIE 5128, First International Symposium on Quantum Informatics, (23 July 2003); https://doi.org/10.1117/12.517916

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