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The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Abstract. Quantum computers hold the promise to solve certain problems exponentially faster than their classical counterparts. Trapped atomic ions are among the physical systems in which building such a computing device seems viable. In… (More)
We present two methods for the precise independent focusing of orthogonal linear polarizations of light at arbitrary relative locations. Our first scheme uses a displaced lens in a polarization Sagnac interferometer to provide adjustable longitudinal and lateral focal displacements via simple geometry; the second uses uniaxial crystals to achieve the same… (More)
We present two independent schemes for the precise focusing of orthogonal polarizations of light at arbitrary relative locations. The first scheme uses a polarization Sagnac interferometer, the second a set of three birefringent elements.