Quantum read-out and fast initialization of nuclear spin qubits with electric currents

Details Quantum read-out and fast initialization of nuclear spin qubits with electric currents Quantum read-out and fast initialization of nuclear spin qubits with electric currents

2011-08-02

arxiv.org/abs/1108.0699v3

Phys. Rev. Lett. 107, 197602 (2011)

Physics

Quantum Physics

Final version to be published in PRL

Scientific paper

Nuclear spin qubits have the longest coherence times in the solid state, but their quantum read-out and initialization is a great challenge. We present a theory for the interaction of an electric current with the nuclear spins of donor impurities in semiconductors. The theory yields a sensitivity criterion for quantum detection of nuclear spin states using electrically detected magnetic resonance, as well as an all electrical method for fast nuclear spin qubit initialization.

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