Separability Criterion for One-Sided Gaussian Channels

Details Separability Criterion for One-Sided Gaussian Channels Separability Criterion for One-Sided Gaussian Channels

2010-01-13

arxiv.org/abs/1001.2225v1

Physics

Quantum Physics

currently 4 pages, no figures

Scientific paper

We show that the following nontrivial necessary precondition for an entanglement evolution equation for pure Gaussian states under one-sided Gaussian channels holds. Suppose a Gaussian quantum channel acts on one mode of a pure entangled multi-mode Gaussian input state. Then, for a fixed channel, either all output states are entangled or none of them are. In other words, if the input state is Gaussian, pure and entangled, the separability after a one-sided Gaussian quantum channel does not depend on the input state, but only on the channel. Furthermore, a simple linear-algebraic separability criterion allows to decide whether a given channel destroys the entanglement of pure entangled input states or leaves them entangled.

Affiliated with

Also associated with

No associations

Rating

Separability Criterion for One-Sided Gaussian Channels 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 Separability Criterion for One-Sided Gaussian Channels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Separability Criterion for One-Sided Gaussian Channels will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-525784