Singlet Generation in Mixed State Quantum Networks

Details Singlet Generation in Mixed State Quantum Networks Singlet Generation in Mixed State Quantum Networks

2009-12-16

arxiv.org/abs/0912.3214v1

Physics

Quantum Physics

17 pages, 21 figures

Scientific paper

10.1103/PhysRevA.81.042316

We study the generation of singlets in quantum networks with nodes initially sharing a finite number of partially entangled bipartite mixed states. We prove that singlets between arbitrary nodes in such networks can be created if and only if the initial states connecting the nodes have a particular form. We then generalize the method of entanglement percolation, previously developed for pure states, to mixed states of this form. As part of this, we find and compare different distillation protocols necessary to convert groups of mixed states shared between neighboring nodes of the network into singlets. In addition, we discuss protocols that only rely on local rules for the efficient connection of two remote nodes in the network via entanglement swapping. Further improvements of the success probability of singlet generation are developed by using particular forms of `quantum preprocessing' on the network. This includes generalized forms of entanglement swapping and we show how such strategies can be embedded in regular and hierarchical quantum networks.

Affiliated with

Also associated with

No associations

Rating

Singlet Generation in Mixed State Quantum Networks 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 Singlet Generation in Mixed State Quantum Networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Singlet Generation in Mixed State Quantum Networks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-49641