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arXiv:1605.06495 · The European Physical Journal Plus

Hybrid entanglement between a trapped ion and a mirror

Clóvis Corrêa, A. Vidiella-Barranco

Published May 1, 2018• 3 citations
arXivHTMLPDF
DOI
10.1140/epjp/i2018-12033-y

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It is presented a scheme for generating entanglement between a moving mirror and the vibrational degree of freedom of a single trapped ion. The system consists of an interferometer with an optomechanical cavity at one arm and a cavity with a single trapped ion at another arm. Because of the radiation pressure, it is possible to entangle the cavity field with the moving mirror at the optomechanical arm and by tuning the cavity field with the internal levels of the ion, it is possible to generate an entangled state comprising the cavity and the ion arm. The cavity fields may be coupled via a beam splitter, making possible to generate entanglement between the moving mirror and the vibrational state of motion of a single trapped ion.
We improved photon collection efficiency from single trapped ions by integrating a high numerical aperture spherical mirror into a linear Paul trap. Satisfactory single ion images were achieved by compensating the large spherical aberration of the mirror by a specially designed aspheric corrector. We also designed a new RF ion trap with the metallic spherical mirror acting as one of the trap electrodes. This trap will greatly increase the efficiency of ion fluorescence collection for ion-photon and remote ion entanglement.