Building a trapped ion quantum computer requires optimizing for different things than a cold atomic clock system. However, a lot of money is currently being dumped into rapidly developing this quantum computing platform. In addition, these systems allow for the generation of large-scale entanglement (and eventually error correction), which would allow for potential entanglement based performance enhancements that would scale favorably in performance as these systems matured/got bigger.
This leads to the question of whether these systems could be used as a potential platform for precise clocks. So my question here is:
- Could you use a current state of the art trapped ion quantum computer (e.g. IonQ's latest system) as an atomic clock (e.g. via a Ramsey sequence and using no entanglement for enhancements)?
- If so, what sort of clock performance (Allan deviation) could one roughly expect to get?
- If not, why not? Or rather, if these systems make for terrible clocks, why?