Quantum state restoration by quantum cloning and measurement

Details Quantum state restoration by quantum cloning and measurement Quantum state restoration by quantum cloning and measurement

2003-09-23

arxiv.org/abs/quant-ph/0309167v2

Physics

Quantum Physics

8 pages

Scientific paper

Copying information is an elementary operation in classical information processing. However, copying seems rather different in the quantum regime. Since the discovery of the universal quantum cloning machine, much has been found from the fundamental point of view about quantum copying. But a basic question as to the utility of universal quantum cloning remains. We have considered its application in quantum state restoration by using cloning circuit for state estimation. It might be expected that classical information from the state estimation might help restore the quantum state that was disturbed during transmission. We find that the fidelity of the final state is, interestingly, independent of error probabilities inside the channel. However, this also turns out to impose a severe constraint on our original aims.

Affiliated with

Also associated with

No associations

Rating

Quantum state restoration by quantum cloning and measurement 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 Quantum state restoration by quantum cloning and measurement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum state restoration by quantum cloning and measurement will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-183032