Charge qubit rotations in a double-dot nanostructure

Details Charge qubit rotations in a double-dot nanostructure Charge qubit rotations in a double-dot nanostructure

2004-10-30

arxiv.org/abs/cond-mat/0411010v1

Pis'ma v ZhETF 80, 572 (2004) [JETP Letters 80, 503 (2004)]

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 1 figure

Scientific paper

10.1134/1.1839300

Quantum operations with a charge solid-state qubit whose logical states are formed by two spatially separated localized states of an electron in the double-dot structure are studied theoretically. We show that it is possible to perform various one-qubit rotations making use of the microwave pulses tuned to the resonances between the localized states and the excited state delocalized over the nanostructure. Explicit analytic expression for the time-dependent electron state vector is derived, and the appropriate pulse parameters are determined.

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