Implementing a Quantum Algorithm with Exchange-Coupled Quantum Dots: A Feasibility Study

  • Authors:

  • E. S. Myrgren;K. B. Whaley

  • Affiliations:

  • Department of Chemistry and Kenneth S. Pitzer Center for Theoretical Chemistry, University of California, Berkeley, California 94720, USA;Department of Chemistry and Kenneth S. Pitzer Center for Theoretical Chemistry, University of California, Berkeley, California 94720, USA

  • Venue:
  • Quantum Information Processing
  • Year:
  • 2003

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Abstract

We present Monte Carlo wavefunction simulations for quantum computations employing an exchange-coupled array of quantum dots. Employing a combination of experimentally and theoretically available parameters, we find that gate fidelities greater than 98% may be obtained with current experimental and technological capabilities. Application to an encoded 3 qubit (nine physical qubits) Deutsch-Josza computation indicates that the algorithmic fidelity is more a question of the total time to implement the gates than of the physical complexity of those gates.PACS: 81.07.Ta, 02.70.Ss, 03.67.Lx, 03.65.Yz