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Semiconductor quantum computer design with 100 nm separation of nuclear-spin qubits

Vladimir Privman·Dima Mozyrsky
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Abstract

We combine elements of the 1998 quantum computing proposals by Privman, Vagner and Kventsel, and by Kane, with the new idea of nuclear-spin qubit interactions mediated indirectly via the bound outer electrons of impurity atoms whose nuclear spins 1/2 are the qubits. These electrons, in turn, interact via the two-dimensional electron gas in the quantum Hall effect regime. The resulting quantum computing scheme retains all the gate-control and measurement aspects of the proposal by Kane, but allows qubit spacing at distances of order 100 nm, attainable with the present-day semiconductor-heterostructure device technologies.

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Vladimir Privman, Dima Mozyrsky. 2001-03-20. Semiconductor quantum computer design with 100 nm separation of nuclear-spin qubits. https://doi.org/10.1364/icqi.2001.pb19

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