Southwest Quantum Information and Technology

Quantum Information Processing in surface electrode ion traps

Peter Maunz, Sandia National Laboratories

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Craig R. Clark, Matthew G. Blain, Jonathan Mizrahi, Susan M. Clark, Daniel L. Stick, Boyan Tabakov, Francisco Benito, Jonathan D. Sterk, Chris Tigges, Jay Van Der Wall, Ray Haltli, Andrew Hollowell, and Peter Maunz Micro-fabricated surface ion traps are an essential technology that will enable scaling of trapped ion quantum information processing to interesting mesoscopic system sizes. While micro-fabricated traps are inherently scalable, the surface geometry and close proximity of trapped ions to the trapping structure make their use for quantum information processing more challenging than macroscopic ion traps. In this talk, we will present progress toward mastering these challenges and establishing surface traps for quantum information processing. We will characterize the High-Optical-Access (HOA) trap, which is optimized for quantum information processing tasks, report on using an argon plasma to remove surface contaminants on traps and show a detailed experimental analysis of average and worst case fidelity of single qubit gates in 171Yb+. Furthermore, we will present the first two-ion gate in a Sandia surface trap. This work was supported by Sandia's Laboratory Directed Research and Development (LDRD) and the Intelligence Advanced Research Projects Activity (IARPA). Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the US Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000.