Physics – Quantum Physics
Scientific paper
2000-10-31
Physics
Quantum Physics
Contemporary Physics 2000, in press
Scientific paper
10.1080/00107510010002599
There are fundamental limits to the accuracy with which one can determine the state of a quantum system. I give an overview of the main approaches to quantum state discrimination. Several strategies exist. In quantum hypothesis testing, a quantum system is prepared in a member of a known, finite set of states, and the aim is to guess which one with the minimum probability of error. Error free discrimination is also sometimes possible, if we allow for the possibility of obtaining inconclusive results. If no prior information about the state is provided, then it is impractical to try to determine it exactly, and it must be estimated instead. In addition to reviewing these various strategies, I describe connections between state discrimination, the manipulation of quantum entanglement, and quantum cloning. Recent experimental work is also discussed.
No associations
LandOfFree
Quantum State Discrimination 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 Discrimination, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum State Discrimination will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-447060