Resonant-pulse operations on the buried donor charge qubits in semiconductors

Details Resonant-pulse operations on the buried donor charge qubits in semiconductors Resonant-pulse operations on the buried donor charge qubits in semiconductors

2004-11-24

arxiv.org/abs/cond-mat/0411605v1

Phys. Rev. B 70 (2004) 233313

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 1 figure, to appear in PRB

Scientific paper

10.1103/PhysRevB.70.233313

A new scheme is proposed for rotations of a double-donor charge qubit whose logical states are defined by the two lowest energy states of a single electron localized around one or another donor. It is shown that making use of the microwave pulses tuned to the resonance with an auxiliary excited molecular level allows for implementation of various one-qubit operations in very short times. Decoherence effects are analyzed by the example of the P$_2^+$:Si system and shown to be weak enough for experimental realization of this scheme being possible.

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