6533b7d0fe1ef96bd125af06
RESEARCH PRODUCT
Genuine tripartite entanglement in a spin-star network at thermal equilibrium
Benedetto MilitelloAntonino Messinasubject
PhysicsQuantum PhysicsQuantum discordSettore FIS/02 - Fisica Teorica Modelli E Metodi MatematiciEntanglement Termodinamica SpinFOS: Physical sciencesQuantum PhysicsQuantum entanglementQuantum topologySquashed entanglementMultipartite entanglementSettore FIS/03 - Fisica Della MateriaAtomic and Molecular Physics and OpticsQuantum mechanicsQuantum metrologyW stateQuantum Physics (quant-ph)Amplitude damping channeldescription
In a recent paper [M. Huber {\it et al}, Phys. Rev. Lett. {\bf 104}, 210501 (2010)] new criteria to find out the presence of multipartite entanglement have been given. We exploit these tools in order to study thermal entanglement in a spin-star network made of three peripheral spins interacting with a central one. Genuine tripartite entanglement is found in a wide range of the relevant parameters. A comparison between predictions based on the new criteria and on the tripartite negativity is also given.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-10-08 | Physical Review A |