Collective Encoding of Quantum Information in a Quantum Dot Register
Anna Grodecka, Paweł Machnikowski
We define the collective logical quantum bit as a state on an array of 2, 4, and 8 quantum dots.We show that such an array can be controlled with less phonon-induced pure dephasing than a single dot.We calculate the dephasing accompanying a single-qubit operation on the collective logical qubit by means of perturbative method describing the open system evolution under arbitrary driving.
Acta Physica Polonica A•Aug 1, 2006•1 citation