Physics – Quantum Physics
Scientific paper
2011-07-07
Phys. Rev. Lett. 108, 020501 (2012)
Physics
Quantum Physics
4 + 4 pages, final version
Scientific paper
Distillation of entanglement using only Gaussian operations is an important primitive in quantum communication, quantum repeater architectures, and distributed quantum computing. Existing distillation protocols for continuous degrees of freedom are only known to converge to a Gaussian state when measurements yield precisely the vacuum outcome. In sharp contrast, non-Gaussian states can be deterministically converted into Gaussian states while preserving their second moments, albeit by usually reducing their degree of entanglement. In this work - based on a novel instance of a non-commutative central limit theorem - we introduce a picture general enough to encompass the known protocols leading to Gaussian states, and new classes of protocols including multipartite distillation. This gives the experimental option of balancing the merits of success probability against entanglement produced.
Campbell Earl T.
Eisert Jens
No associations
LandOfFree
Gaussification and entanglement distillation of continuous variable systems: a unifying picture 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 Gaussification and entanglement distillation of continuous variable systems: a unifying picture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gaussification and entanglement distillation of continuous variable systems: a unifying picture will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-417096