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On time-optimal NMR control of states of qutrits represented by quadrupole nuclei with the spin I = 1

  • Atoms, Molecules, Optics
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Abstract

Elementary logical operators (selective rotation, Fourier transform, controllable phase shift, and SUM gate) are considered for a quantum computer based on three-level systems (qutrits) represented by nuclear spins I = 1 under nuclear magnetic resonance conditions. The computer simulation of the realization of these operators by means of simple and composite selective radiofrequency (RF) pulses and optimized RF pulses is performed. The time dependence of the amplitude of last pulses is found by numerical optimization at different durations. Two variants are proposed for realization of a two-qutrit SUM gate by using one-qutrit or two-qutrit optimized RF pulses. The calculated time dependences of realization errors were used to study the time optimality of different methods for obtaining gates, proposed earlier and in this paper. The advantages and disadvantages of each of the methods are evaluated for different values of physical parameters.

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Authors and Affiliations

  1. L.V. Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russia

    V. E. Zobov & V. P. Shauro

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  1. V. E. Zobov
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  2. V. P. Shauro
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Correspondence to V. E. Zobov.

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Original Russian Text © V.E. Zobov, V.P. Shauro, 2011, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2011, Vol. 140, No. 2, pp. 211–223.

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Zobov, V.E., Shauro, V.P. On time-optimal NMR control of states of qutrits represented by quadrupole nuclei with the spin I = 1. J. Exp. Theor. Phys. 113, 181–191 (2011). https://doi.org/10.1134/S1063776111060094

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  • DOI: https://doi.org/10.1134/S1063776111060094

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