Charge-qubit operation of an isolated double quantum dot

Details Charge-qubit operation of an isolated double quantum dot Charge-qubit operation of an isolated double quantum dot

2005-04-18

arxiv.org/abs/cond-mat/0504451v3

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 journal pages, 4 figures, Letter

Scientific paper

10.1103/PhysRevLett.95.090502

We have investigated coherent time evolution of pseudo-molecular states of an isolated (leadless) silicon double quantum-dot, where operations are carried out via capacitively-coupled elements. Manipulation is performed by short pulses applied to a nearby gate, and measurement is performed by a single-electron transistor. The electrical isolation of this qubit results in a significantly longer coherence time than previous reports for semiconductor charge qubits realized in artificial molecules.

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