Design, fabrication, and validation of junction ion traps

We summarize Quantinuum's progress in research and development of surface-electrode ion traps for QCCD quantum computing architectures. A common feature of experimental ion traps to date is that the number of independent control signals is proportional to the number of trapping legs, which is turn is proportional to the number of ions in the trap. In scaling such devices to thousands or millions of ions, the system requires a similar number of waveform generators, chip interconnects, vacuum feedthroughs, bandpass filters, and so on. Here we propose an architecture in which the number of analog control signals is completely independent of the number of legs in the trap. We describe the design of an ion trap composed of a 5x8 array of trapping zones and experimentally demonstrate the required motional primitives to support this architecture.