Spatial multipartite entanglement and localization of entanglement
arXiv:1003.0180 · doi:10.1103/PhysRevA.82.032303
Abstract
We present a simple model together with its physical implementation which allows one to generate multipartite entanglement between several spatial modes of the electromagnetic field. It is based on parametric down-conversion with N pairs of symmetrically-tilted plane waves serving as a pump. The characteristics of this spatial entanglement are investigated in the cases of zero as well as nonzero phase mismatch. Furthermore, the phenomenon of entanglement localization in just two spatial modes is studied in detail and results in an enhancement of the entanglement by a factor square root of N.
7 pages, 2 figures
References in corpus (18)
- Separability Criterion for Density Matrices
- Separability of Mixed States: Necessary and Sufficient Conditions
- Distributed Entanglement
- Peres-Horodecki separability criterion for continuous variable systems
- Multipartite entanglement for continuous variables: A quantum teleportation network
- Detecting genuine multipartite continuous-variable entanglement
- Bound entangled Gaussian states
- Quantum Imaging
- Experimental demonstration of three-color entanglement
- Quantum key distribution with higher-order alphabets using spatially-encoded qudits
- Multipartite entanglement in three-mode Gaussian states of continuous variable systems: Quantification, sharing structure and decoherence
- Three-mode entanglement by interlinked nonlinear interactions in optical media
- Unitarily localizable entanglement of Gaussian states
- Multipartite continuous-variable entanglement from concurrent nonlinearities
- Quantification and scaling of multipartite entanglement in continuous variable systems
- Tripartite entanglement from interlinked parametric interactions
- Tripartite entanglement in parametric down-conversion with spatially-structured pump
- Creation and localization of entanglement in a simple configuration of coupled harmonic oscillators