Random multiparty entanglement distillation

Details Random multiparty entanglement distillation Random multiparty entanglement distillation

2007-09-25

arxiv.org/abs/0709.4059v2

Phys. Rev. A 78, 012348 (2008)

Physics

Quantum Physics

9 pages, RevTeX. v2: Corrected misstatement of Horodecki et al's entanglement of assistance result, changed proof of Theorem 2

Scientific paper

We describe various results related to the random distillation of multiparty entangled states - that is, conversion of such states into entangled states shared between fewer parties, where those parties are not predetermined. In previous work [Phys. Rev. Lett. 98, 260501 (2007)] we showed that certain output states (namely Einstein-Podolsky-Rosen (EPR) pairs) could be reliably acquired from a prescribed initial multipartite state (namely the W state) via random distillation that could not be reliably created between predetermined parties. Here we provide a more rigorous definition of what constitutes ``advantageous'' random distillation. We show that random distillation is always advantageous for W-class three-qubit states (but only sometimes for Greenberger-Horne-Zeilinger (GHZ)-class states). We show that the general class of multiparty states known as symmetric Dicke states can be readily converted to many other states in the class via random distillation. Finally we show that random distillation is provably not advantageous in the limit of multiple copies of pure states.

Affiliated with

Also associated with

No associations

Rating

Random multiparty entanglement distillation 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 Random multiparty entanglement distillation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Random multiparty entanglement distillation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-694216