Optimal covariant quantum networks

Details Optimal covariant quantum networks Optimal covariant quantum networks

2008-12-20

arxiv.org/abs/0812.3922v1

Proceedings of QCMC 2008, AIP Conf. Proc. 1110, 47 (2009)

Physics

Quantum Physics

10 pages, 3 figures

Scientific paper

10.1063/1.3131375

A sequential network of quantum operations is efficiently described by its quantum comb, a non-negative operator with suitable normalization constraints. Here we analyze the case of networks enjoying symmetry with respect to the action of a given group of physical transformations, introducing the notion of covariant combs and testers, and proving the basic structure theorems for these objects. As an application, we discuss the optimal alignment of reference frames (without pre-established common references) with multiple rounds of quantum communication, showing that i) allowing an arbitrary amount of classical communication does not improve the alignment, and ii) a single round of quantum communication is sufficient.

Affiliated with

Also associated with

No associations

Rating

Optimal covariant quantum networks 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 Optimal covariant quantum networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optimal covariant quantum networks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-103684