Partly noiseless encoding of quantum information in quantum dot arrays against phonon-induced pure dephasing

Details Partly noiseless encoding of quantum information in quantum dot arrays against phonon-induced pure dephasing Partly noiseless encoding of quantum information in quantum dot arrays against phonon-induced pure dephasing

2005-11-07

arxiv.org/abs/cond-mat/0511162v2

Phys. Rev. B 73, 125306 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Final version; 10 pages, 8 figures

Scientific paper

10.1103/PhysRevB.73.125306

We show that pure dephasing of a quantum dot charge (excitonic) qubit may be
reduced for sufficiently slow gating by collectively encoding quantum
information in an array of quantum dots. We study the role of the size and
structure of the array and of the exciton lifetime for the resulting total
error of a single-qubit operation.

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