Additivity of decoherence measures for multiqubit quantum systems

Details Additivity of decoherence measures for multiqubit quantum systems Additivity of decoherence measures for multiqubit quantum systems

2003-09-29

arxiv.org/abs/cond-mat/0309685v1

Phys. Lett. A 328, 87-93 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 1 figure

Scientific paper

10.1016/j.physleta.2004.06.021

We introduce new measures of decoherence appropriate for evaluation of quantum computing designs. Environment-induced deviation of a quantum system's evolution from controlled dynamics is quantified by a single numerical measure. This measure is defined as a maximal norm of the density matrix deviation. We establish the property of additivity: in the regime of the onset of decoherence, the sum of the individual qubit error measures provides an estimate of the error for a several-qubit system. This property is illustrated by exact calculations for a spin-boson model.

Affiliated with

Also associated with

No associations

Rating

Additivity of decoherence measures for multiqubit quantum systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Additivity of decoherence measures for multiqubit quantum systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Additivity of decoherence measures for multiqubit quantum systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-279653