Physics – Quantum Physics
Scientific paper
2009-11-12
New J. Phys. 12, 033042 (2010)
Physics
Quantum Physics
18 pages, 6 figures
Scientific paper
The certificate of success for a number of important quantum information processing protocols, such as entanglement distillation, is based on the difference in the entanglement content of the quantum states before and after the protocol. In such cases, effective bounds need to be placed on the entanglement of non-local states consistent with statistics obtained from local measurements. In this work, we study numerically the ability of a novel type of homodyne detector which combines phase sensitivity and photon-number resolution to set accurate bounds on the entanglement content of two-mode quadrature squeezed states without the need for full state tomography. We show that it is possible to set tight lower bounds on the entanglement of a family of two-mode degaussified states using only a few measurements. This presents a significant improvement over the resource requirements for the experimental demonstration of continuous-variable entanglement distillation, which traditionally relies on full quantum state tomography.
Datta Animesh
Eisert Jens
Feito Alvaro
Plenio Martin . B.
Puentes Graciana
No associations
LandOfFree
Entanglement quantification from incomplete measurements: Applications using photon-number-resolving weak homodyne detectors 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 Entanglement quantification from incomplete measurements: Applications using photon-number-resolving weak homodyne detectors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Entanglement quantification from incomplete measurements: Applications using photon-number-resolving weak homodyne detectors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-148797