Publisher Correction: Integrated multi-wavelength control of an ion qubit

A fully fiber-integrated ion trap for portable quantum technologies

“…A third approach is to use in-vacuum integrated optics to maximise the collection of ionic fluorescence [13][14][15] , working in conjunction with out-of-vacuum optical elements. These solutions are well suited to planar ion traps, and are particularly interesting for multi-ion systems, but they still require a windowed vacuum chamber and careful alignment of external optical components.Progress has also been made in the integration of the delivery optics, using optical waveguides embedded into the substrate of surface ion traps [16][17][18][19] . Here, diffractive couplers are used to focus the beams onto the position of the ion.…”

“…Progress has also been made in the integration of the delivery optics, using optical waveguides embedded into the substrate of surface ion traps [16][17][18][19] . Here, diffractive couplers are used to focus the beams onto the position of the ion.…”