On Bell's theorem, quantum communication, and entanglement detection

Details On Bell's theorem, quantum communication, and entanglement detection On Bell's theorem, quantum communication, and entanglement detection

2008-11-25

arxiv.org/abs/0811.4142v1

Physics

Quantum Physics

10 pages, for proceedings of Foundations of Probability and Physics-5 at Vaxjo University, Swedish Southeast Academy August 24

Scientific paper

10.1063/1.3109943

(A) Bell's theorem rests on a conjunction of three assumptions: realism, locality and ``free will''. A discussion of these assumptions will be presented. It will be also shown that, if one adds to the assumptions the principle or rotational symmetry of physical laws, a stronger version of the theorem emerges. (B) A link between Bell's theorem and communication complexity problems will be presented. This also includes experimental realizations, which surprisingly do not involve entanglement. (C) A new sufficient and necessary criterion for entanglement of general (mixed) states is be presented. It is derived using the same geometric starting point as the inclusion of the symmetry in (A). The set of entanglement identifiers (EI's) emerging via this method contains entanglement witnesses (EW's), but they form only a subset of all EI's. Thus the method is more powerful than the one based on EW's.

Affiliated with

Also associated with

No associations

Rating

On Bell's theorem, quantum communication, and entanglement detection 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 On Bell's theorem, quantum communication, and entanglement detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On Bell's theorem, quantum communication, and entanglement detection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-304918