This article has been reviewed according to Science X's editorial process and policies. Editors have highlighted the following attributes while ensuring the content's credibility: Some quantum systems are so complex that even the most powerful supercomputers struggle to simulate their behavior. One solution is quantum simulation: building a controllable quantum system in the lab and tuning it to mimic the one researchers want to understand.
In a trapped-ion simulator, a row of individual charged atoms, or ions, is held in place by electric fields inside a device called an ion trap. Lasers are used to make the ions interact in a manner that simulates the quantum system, and then researchers measure the information encoded in the ions to reveal the system's properties. Rice University's Guido Pagano, along with collaborators at Duke University and Translume Inc., has developed a new kind of trapped-ion simulator, called a monolithic segmented 3D ion trap.
This trap allowed the team to study these complex systems using heavy ions like ytterbium. The work is published in Physical Review Applied. "Trapped-ion simulators can help us understand complex problems, like charge transfer in photosynthesis," said Pagano, an associate professor of physics and astronomy and senior author on this study.
"With this new ion trap, we have combined some of the best features of the previous versions while overcoming engineering challenges inherent to integrating these features in a compact microfabricated monolithic architecture." Ion traps using radio-frequency voltages have commonly fallen into two camps: blade-style traps and microfabricated chip traps. Blade-style ion traps offer high performance but are limited in geometric precision and difficult to reproduce, since they are assembled by hand. Microfabricated chip ion traps are typically two-dimensional traps that offer greater geometric precision, are highly modular and are easy to reproduce.
In many ways, however, they do not perform as well as blade-style ion traps. Monolithic three-dimensional ion traps sought to combine the best of blade and chip traps but, until now, could only work with light ions like calcium. "In our monolithic ion trap, we wanted to combine the high-performance features and accessibility of the blade trap with the scalability and modularity of the chip trap in a way that was compatible with the heavier ions," said Abhishek Menon, a graduate student and the corresponding author on this study.
"Solving the harder engineering problems with trapping heavier ionic species also helps simplify trapping lighter ionic species and further use of this trap for a variety of quantum technologies." The research team came up with a design that started as a block of fused silica glass. They used lasers and chemicals to mark out and create channels for the ions and trenches for the electrodes, which needed to be installed before the trap was coated with sputtered gold. The trenches were an important part of the design.
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