A Nuclear Spin Valve: Towards the Read-out of Single Nuclear Spin Qubits |
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Authors: | M Kindermann D G Cory |
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Affiliation: | (1) Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA;(2) Department of Nuclear Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA |
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Abstract: | We propose a scheme to read out qubits defined in single nuclear spins—addressing one of the main obstacles on the way to
a solid state NMR quantum computer. It is based on a “spin valve” between bulk nuclear spin systems that is highly sensitive
to the state of the qubit spin. We suggest a concrete realization of that detector in a Si lattice and show that it can be
operated over a broad range of experimental parameters. Transport of spin through the proposed spin valve is analogous to
that of charge through an electronic nanostructure, but exhibits distinctive new features.
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Keywords: | solid-state nuclear spin qubit read-out single-spin detection spin transport spin valve |
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