High throughput cryogenic testbed for micro-3d printed ion traps
Abstract
We propose a testbed for rapid development of next generation ion traps for quantum computing. Betterion traps will improve quantum computing, as well as other DoD interests such as quantum metrology.As part of a multi-campus collaboration that includes Lawrence Livermore National Lab, we are currentlyfabricating novel, micro-3D printed traps that promise to substantially outperform current ion traps. Wepropose here a high throughput testbed that will allow us to rapidly quantify the performance of thesetraps. The fabrication of these micro-3D ion traps is based on two photon lithography, a new additive 3Dprinting technology. The resulting traps will combine the tight confinement of 3D traps with a scalableproduction process, where 100s of electrodes and multiple traps can be incorporated on a single chip.Trapped ions have demonstrated the best performance in key quantum computing metrics, but as withall quantum systems, scaling up to a practical quantum computer has been challenging. We are proposinga cryogenic ion trapping system to significantly speed up the testing cycle from over a month to less thana day. The bottleneck for fast testing is achieving the ultralow vacuum pressures necessary for trappingions. In our testbed, a cryogenic pump freezes out gas molecules rapidly onto cold surfaces, only severaldegrees above absolute zero, obviating the need for long system preparation, and allowing us to test a trapdesign in a single day. The cryogenic environment also provides key benefits for quantum gate operation: itachieves lower pressures than what is possible with room temperature systems and it reduces decoherencedue to heating sources. These ancillary benefits combined with the next generation ion traps we are chargedwith producing position our groups to realize the best trapped ion performance in key quantum computingfigures of merit.Realizing a fast development cycle is important for testing new ion traps in this unexplored parameterspace. Our systems fast turnaround is matched by the trap manufacturing cycle, where multiple trapscan be made in under a day. We expect the traps we develop to realize 3 to 6 times higher ion motionalfrequencies. This translates into order of magnitude improvements in performance metrics, and criticallythe ability to directly Doppler cool ions to the motional ground state. It is hard to overstate the importanceof realizing this goal: it will both speed and simplify trapped ion quantum computing. The faster that weare able to develop these traps, the more quickly the traps and underlying technology will be available tothe entire ion trapping community
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 05, 2021
- Source ID
- N000142112720
Entities
People
- A. M. Jayich
Organizations
- Office of Naval Research
- United States Navy
- University of California, Santa Barbara