Formation of helical ion chains


Autoria(s): Nigmatullin, R.; del Campo, A.; Chiara, G. De; Morigi, G.; Plenio, M. B.; Retzker, A.
Data(s)

25/01/2016

Resumo

We study the nonequilibrium dynamics of the linear to zigzag structural phase transition exhibited by an ion chain confined in a trap with periodic boundary conditions. The transition is driven by reducing the transverse confinement at a finite quench rate, which can be accurately controlled. This results in the formation of zigzag domains oriented along different transverse planes. The twists between different domains can be stabilized by the topology of the trap and under laser cooling the system has a chance to relax to a helical chain with nonzero winding number. Molecular dynamics simulations are used to obtain a large sample of possible trajectories for different quench rates. The scaling of the average winding number with different quench rates is compared to the prediction of the Kibble-Zurek theory, and a good quantitative agreement is found.

Formato

application/pdf

Identificador

http://pure.qub.ac.uk/portal/en/publications/formation-of-helical-ion-chains(dabed9e5-1821-493d-8cf1-9c0361216820).html

http://dx.doi.org/10.1103/PhysRevB.93.014106

http://pure.qub.ac.uk/ws/files/61968694/1112.1305v2

Idioma(s)

eng

Direitos

info:eu-repo/semantics/openAccess

Fonte

Nigmatullin , R , del Campo , A , Chiara , G D , Morigi , G , Plenio , M B & Retzker , A 2016 , ' Formation of helical ion chains ' Physical Review B (Condensed Matter) , vol 93 , no. 1 , 014106 . DOI: 10.1103/PhysRevB.93.014106

Palavras-Chave #quant-ph #cond-mat.stat-mech
Tipo

article