HAIT Journal of Science and Engineering A
Volume 5, Issues 1-2, pp. 17-28
© 2008 Holon Institute of Technology

 

Interqubit coupling based on indirect interaction of 31P nuclear spins with electrons localized in a 28Si nanowire

Issai Shlimak1,* and Israel D. Vagner2,3

1Minerva Center and Jack and Pearl Resnick Institute of Advanced Technology,
Department of Physics, Bar-Ilan University, Ramat-Gan 52900, Israel
2Research Center for Quantum Communication Engineering,
Holon Institute of Technology, 52 Golomb St., Holon 58102, Israel
3Grenoble High Magnetic Fields Laboratory,
Max-Planck-Institute für Festkörperforschung and CNRS,
25 Avenue des Martyrs, BP166, F-38042, Grenoble, Cedex 9, France
*Corresponding author: shlimai@mail.biu.ac.il
Received 5 March 2007

 

We suggest a new method of quantum information processing based on the precise placing of 31P atoms in a quasi-one-dimensional 28Si nanowire using isotope engineering and neutron-transmutation doping of the grown structures. In our structure, interqubit entanglement is based on the indirect interaction of 31P nuclear spins with electrons localized in a nanowire. This allows one to control the coupling between distant qubits and between qubits separated by non-qubit neighboring nodes. The suggested method enables one to fabricate structures using present-day nanolithography. Numerical estimates show the feasibility of the proposed device and method of operation.

PACS: 85.35.Be, 03.67.Mn, 61.72.Tt, 73.21.Hb


 

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