Quantum information processing based on P-31 nuclear spin qubits in a quasi-one-dimensional Si-28 nanowire

Abstract

We suggest a new method of quantum information processing based on the precise placing of P-31 isotope atoms in a quasi-one-dimensional Si-28 nanowire using isotope engineering and neutron-transmutation doping of the grown structures. In our structure, interqubit entanglement is based on the indirect interaction of P-31 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.

7 pages, 4 figures

References in corpus (12)

• Quantum Computation with Quantum Dots
• The Physical Implementation of Quantum Computation
• Two-Bit Gates are Universal for Quantum Computation
• Electron Spin Resonance Transistors for Quantum Computing in Silicon-Germanium Heterostructures
• Atomically precise placement of single dopants in Si
• An all silicon quantum computer
• Towards the fabrication of phosphorus qubits for a silicon quantum computer
• Quantum Computation in Quantum-Hall Systems
• Silicon-based Quantum Computation
• Gate-induced ionization of single dopant atoms
• Nuclear magnetic resonance spectrum of 31P donors in silicon quantum computer
• Nuclear-spin qubits interaction in mesoscopic wires and rings