Adiabatic steering and determination of dephasing rates in double dot qubits

Details Adiabatic steering and determination of dephasing rates in double dot qubits Adiabatic steering and determination of dephasing rates in double dot qubits

2001-04-23

arxiv.org/abs/cond-mat/0104435v1

Phys. Rev. B. 64, 035319 (2001)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures. To appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.64.035319

We propose a scheme to prepare arbitrary superpositions of quantum states in double quantum--dots irradiated by coherent microwave pulses. Solving the equations of motion for the dot density matrix, we find that dephasing rates for such superpositions can be quantitatively infered from additional electron current pulses that appear due to a controllable breakdown of coherent population trapping in the dots.

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