Covariant feedback Control of arbitrary qudit state against Depolarizing Noise is impossible

Details Covariant feedback Control of arbitrary qudit state against Depolarizing Noise is impossible Covariant feedback Control of arbitrary qudit state against Depolarizing Noise is impossible

2008-11-20

arxiv.org/abs/0811.3254v1

Physics

Quantum Physics

submitted for publication on June 29, 2008

Scientific paper

In this paper, we prove that it is impossible to construct a convariant quantum feedback control instruments which aim to correct the channel noise imposed on an unknown qubit. The proof is based on the searching for the optimal quantum control protocol and it turns out there exist no better %\textit{Complete Positive Trace %Preserving}(CPTP) maps complete positive and covariant quantum operations which provide a higher fidelity than the trivial Identity operators. The generalization of the investigation to bipartite entangled pure state is also included.

Affiliated with

Also associated with

No associations

Rating

Covariant feedback Control of arbitrary qudit state against Depolarizing Noise is impossible 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 Covariant feedback Control of arbitrary qudit state against Depolarizing Noise is impossible, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Covariant feedback Control of arbitrary qudit state against Depolarizing Noise is impossible will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-667602