Quantum nondemolition measurements of single donor spins in semiconductors

Author(s): Sarovar, Mohan; Young, Kevin C.; Schenkel, Thomas; Whaley, K. Birgitta | 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.