Quantum non-demolition measurements of single donor spins in semiconductors

Details Quantum non-demolition measurements of single donor spins in semiconductors Quantum non-demolition measurements of single donor spins in semiconductors

2007-11-15

arxiv.org/abs/0711.2343v3

Phys. Rev. B, 78, 245302 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8+ pages. 4 figures. Published version

Scientific paper

10.1103/PhysRevB.78.245302

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.

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