Nuclear spin 3/2 electric quadrupole relaxation as a quantum computation process

  • Authors:

  • A. M. Souza;A. Gavini-Viana;I. S. Oliveria;R. S. Sarthor;R. Auccaise;E. R. Deazevedo;T. J. Bonagamba

  • Affiliations:

  • Centro Brasileiro de Pesquisas Físicas, Rua Dr. Xavier Sigaud, Rio de Janeiro, RJ, Brazil;Centro Brasileiro de Pesquisas Físicas, Rua Dr. Xavier Sigaud, Rio de Janeiro, RJ, Brazil;Centro Brasileiro de Pesquisas Físicas, Rua Dr. Xavier Sigaud, Rio de Janeiro, RJ, Brazil;Centro Brasileiro de Pesquisas Físicas, Rua Dr. Xavier Sigaud, Rio de Janeiro, RJ, Brazil;Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal, São Carlos, Brazil;Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal, São Carlos, Brazil;Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal, São Carlos, Brazil

  • Venue:
  • Quantum Information & Computation
  • Year:
  • 2010

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Abstract

In this work we applied a quantum circuit treatment to describe the nuclear spin relax-ation. From the Redfield theory, we obtain a description of the quadrupolar relaxationas a computational process in a spin 3/2 system, through a model in which the envi-ronment is comprised by five qubits and three different quantum noise channels. Theinteraction between the environment and the spin 3/2 nuclei is described by a quantumcircuit fully compatible with the Redfield theory of relaxation. Theoretical predictionsare compared to experimental data, a short review of quantum channels and relaxationin NMR qubits is also present.