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VOLUME 80 | ISSUE 7 | PAGE 572
Charge qubit rotations in a double-dot nanostructure
L. A. Openov, A. V. Tsukanov^{\dag 1)}
Moscow Engineering Physics Institute, 115409 Moscow, Russia
^{\dag}Institute of Physics and Technology RAS, 117218, Moscow, Russia


PACS: 03.67.Lx, 73.21.La, 85.35.-p
Abstract
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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