Impossibility of comparing and sorting quantum states

Details Impossibility of comparing and sorting quantum states Impossibility of comparing and sorting quantum states

2001-07-17

arxiv.org/abs/quant-ph/0107085v1

Physics

Quantum Physics

2 pages, no figures

Scientific paper

Is there any point of principle that prohibits us from doing one or more forms of quantum information processing? It is now well known that an unknown quantum state can neither be copied nor deleted perfectly. Given a set of states which are not necessarily orthogonal, is it possible to compare any two states from the set, given some reasonable ordering of such states? Is it possible to sort them in some specific order? In the context of quantum computation, it is shown here that there is no quantum circuit implementing a unitary transformation, for comparing and sorting an unrestricted set of quantum states.

Affiliated with

Also associated with

No associations

Rating

Impossibility of comparing and sorting quantum states 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 Impossibility of comparing and sorting quantum states, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impossibility of comparing and sorting quantum states will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-642932