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Individual optical addressing in chains of trapped atomic ions requiresgeneration of many small, closely spaced beams with low cross-talk.Furthermore, implementing parallel operations necessitates phase, frequency,and amplitude control of each individual beam. Here we present a scalablemethod for achieving all of these capabilities using a novel integratedphotonic chip coupled to a network of optical fibre components. The chip designresults in very low cross-talk between neighbouring channels even at themicrometre-scale spacing by implementing a very high refractive index contrastbetween the channel core and cladding. Furthermore, the photonic chipmanufacturing procedure is highly flexible, allowing for the creation ofdevices with an arbitrary number of channels as well as non-uniform channelspacing at the chip output. We present the system used to integrate the chipwithin our ion trap apparatus and characterise the performance of the fullindividual addressing setup using a single trapped ion as a light-field sensor.Our measurements showed intensity cross-talk below $10^{-3}$ across the chip,with minimum observed cross-talk as low as $O\left(10^{-5}\right)$.

Low Cross-Talk Optical Addressing of Trapped-Ion Qubits Using a Novel Integrated Photonic Chip