Fault Localization in a Microfabricated Surface Ion Trap using Diamond
Nitrogen-Vacancy Center Magnetometry
- URL: http://arxiv.org/abs/2403.08731v1
- Date: Wed, 13 Mar 2024 17:30:06 GMT
- Title: Fault Localization in a Microfabricated Surface Ion Trap using Diamond
Nitrogen-Vacancy Center Magnetometry
- Authors: Pauli Kehayias, Matthew A. Delaney, Raymond A. Haltli, Susan M. Clark,
Melissa C. Revelle, Andrew M. Mounce
- Abstract summary: We use a high-resolution quantum magnetic imaging technique, based on nitrogen-vacancy centers in diamond, to investigate short-circuit faults in an ion trap chip.
We imaged currents from these short-circuit faults to ground and compared to intentionally-created faults, finding that the root-cause of the faults was failures in the on-chip trench capacitors.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: As quantum computing hardware becomes more complex with ongoing design
innovations and growing capabilities, the quantum computing community needs
increasingly powerful techniques for fabrication failure root-cause analysis.
This is especially true for trapped-ion quantum computing. As trapped-ion
quantum computing aims to scale to thousands of ions, the electrode numbers are
growing to several hundred with likely integrated-photonic components also
adding to the electrical and fabrication complexity, making faults even harder
to locate. In this work, we used a high-resolution quantum magnetic imaging
technique, based on nitrogen-vacancy (NV) centers in diamond, to investigate
short-circuit faults in an ion trap chip. We imaged currents from these
short-circuit faults to ground and compared to intentionally-created faults,
finding that the root-cause of the faults was failures in the on-chip trench
capacitors. This work, where we exploited the performance advantages of a
quantum magnetic sensing technique to troubleshoot a piece of quantum computing
hardware, is a unique example of the evolving synergy between emerging quantum
technologies to achieve capabilities that were previously inaccessible.
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