| Summary: | <p>This work describes the design and implementation of a new apparatus to achieve quantum information processing in trapped ions using microwave methods. The apparatus involves many design improvements over a previous quantum processing experiment which achieved the highest single-qubit gate fidelity, longest coherence time, and highest microwave based two-qubit fidelity.
The goal of this new experiment is a two-qubit gate speed and a fidelity improvement of a factor of 10, making microwave based gates much more feasible as quantum processors. To this end, a novel clock qubit within <sup>43</sup>Ca<sup>+</sup> is chosen, and the ion height is nearly halved. An anticipated heating rate increase is counteracted by the use of cryogenics. A novel ion chip design is implemented via wafer-scale fabrication and subsequently attached using a novel eutectic bonding technique. The implementation required many design and fabrication problems to be solved; these are described. The vacuum system reaches < 10<sup>−11</sup> mbar even at room temperature, lowering experimental difficulty and allowing for performance comparisons at a wide temperature range. A new experiment control system, ARTIQ, and corresponding Sinara hardware is used
for control. Experimental results achieved so far include a study of contributing factors to the ion loading rate, and a comparison between the designed and measured microwave fields. All results achieved to date are compatible with the main
speed and fidelity goal, which should be achieved in the near future.</p>
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