Partly noiseless encoding of quantum information in quantum dot arrays against phonon-induced pure dephasing
arXiv:cond-mat/0511162 · doi:10.1103/PhysRevB.73.125306
Abstract
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.
Final version; 10 pages, 8 figures