Optically induced structural phase transitions in ion Coulomb crystals
Optically induced structural phase transitions in ion Coulomb crystals
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DOI：
10.1103/physreva.86.043435
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发表时间：
2012-10
影响因子：
2.9
通讯作者：
P. Horák;A. Dantan;M. Drewsen
中科院分区：
文献类型：
--
作者：
P. Horák;A. Dantan;M. Drewsen
本文数值研究了在一维光诱导周期势作用下，束缚在三维简谐势阱中的离子库仑晶体的结构动力学。我们证明，热激发晶体结构之间的过渡，如体心立方和面心立方，可以通过适当选择的潜在深度和周期性抑制。此外，通过随时间改变谐波陷阱参数和/或光学势，可以以接近单位效率获得晶体结构之间的受控转变。
We investigate numerically the structural dynamics of ion Coulomb crystals confined in a three-dimensional harmonic trap when influenced by an additional one-dimensional optically induced periodical potential. We demonstrate that transitions between thermally excited crystal structures, such as body-centered cubic and face-centered cubic, can be suppressed by a proper choice of the potential depth and periodicity. Furthermore, by varying the harmonic trap parameters and/or the optical potential in time, controlled transitions between crystal structures can be obtained with close to unit efficiency.