Quantum non-demolition measurements of single donor spins in semiconductors

Abstract

We propose a technique for measuring the state of a single donor electron spin using a field-effect transistor induced two-dimensional electron gas and electrically detected magnetic resonance techniques. The scheme is facilitated by hyperfine coupling to the donor nucleus. We analyze the potential sensitivity and outline experimental requirements. Our measurement provides a single-shot, projective, and quantum non-demolition measurement of an electron-encoded qubit state.

arXiv comment8+ pages. 4 figures. Published version

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• Quantum Hall Charge Sensor for Single-Donor Nuclear Spin Detection in Silicon
• Large-scale atomistic density functional theory calculations of phosphorus-doped silicon quantum bits
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