Quantum nondemolition measurements of single donor spins in semiconductors

Mohan Sarovar, Kevin C. Young, Thomas Schenkel, and K. Birgitta Whaley
Phys. Rev. B 78, 245302 – Published 4 December 2008

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 nondemolition measurement of an electron-encoded qubit state.

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  • Received 30 September 2008

DOI:https://doi.org/10.1103/PhysRevB.78.245302

©2008 American Physical Society

Authors & Affiliations

Mohan Sarovar1, Kevin C. Young2, Thomas Schenkel3, and K. Birgitta Whaley1

  • 1Department of Chemistry, Berkeley Center for Quantum Information and Computation, University of California–Berkeley, Berkeley, California 94720, USA
  • 2Department of Physics, Berkeley Center for Quantum Information and Computation, University of California–Berkeley, Berkeley, California 94720, USA
  • 3Accelerator and Fusion Research Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA

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Issue

Vol. 78, Iss. 24 — 15 December 2008

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