Motional entanglement with trapped ions and a nanomechanical resonator

Autor(es)

Nicacio, F. ^[1] ; Furuya, K. ^[1] ; Semiao, F. L. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP - Brazil

^[2] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210170 Santo Andre, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Physical Review A; v. 88, n. 2 AUG 23 2013.
• Citações Web of Science: 3

Resumo

We study the entangling power of a nanoelectromechanical system (NEMS) simultaneously interacting with two separately trapped ions. To highlight this entangling capability, we consider a special regime where the ion-ion coupling does not generate entanglement in the system and any resulting entanglement will be the result of the NEMS acting as an entangling device. We study the dynamical behavior of the bipartite NEMS-induced ion-ion entanglement as well as the tripartite entanglement of the whole system (ions + NEMS). We found some quite remarkable phenomena in this hybrid system. For instance, the two trapped ions initially uncorrelated and prepared in coherent states can become entangled by interacting with a nanoelectromechanical resonator (also prepared in a coherent state) as soon as the ion-NEMS coupling achieves a certain value, and this can be controlled by external voltage gate on the NEMS device. We also show that, dynamically, the tripartite entanglement presents a more pronounced robustness against the destructive effects of dissipation when compared to the bipartite content. (AU)

• Processo FAPESP: 09/16369-8 - Informação Quântica no Espaço de Fase
• Beneficiário: Fernando Antonio Nazareth Nicacio
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado