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Study of Decoherence of Elementary Gates Implemented in a Chain of Few Nuclear Spins Quantum Computer Model

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DOI: 10.4236/jmp.2012.31013    4,744 Downloads   7,037 Views   Citations

ABSTRACT

We study the phenomenon of decoherence during the operation of one qubit transformation, controlled-not (CNOT) and controlled-controlled-not (C2NOT) quantum gates in a quantum computer model formed by a linear chain of three nuclear spins system. We make this study with different type of environments, and we determine the associated decoherence time as a function of the dissipative parameter. We found that the dissipation parameter to get a well defined quantum gates (without significant decoherence) must be within the range of . We also study the behavior of the purity parameter for these gates and different environments and found linear or quadratic decays of this parameter depending on the type of environments.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

G. López and P. López, "Study of Decoherence of Elementary Gates Implemented in a Chain of Few Nuclear Spins Quantum Computer Model," Journal of Modern Physics, Vol. 3 No. 1, 2012, pp. 85-101. doi: 10.4236/jmp.2012.31013.

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