# Multilayer ion trap technology for scalable quantum computing and quantum simulation

**Authors:** Amado Bautista-Salvador, Giorgio Zarantonello, Henning Hahn, Alan Preciado-Grijalva, Jonathan Morgner, Martina Wahnschaffe, Christian Ospelkaus  
**arXiv:** [1812.01829](https://arxiv.org/abs/1812.01829)  
**Date:** 2018-12-05  
**Summary page:** https://www.summarizepaper.com/en/arxiv-id/1812.01829v1/

## Key points

- Authors introduce a groundbreaking fabrication method for ion traps
- Method allows creation of multilayer traps with unlimited metal-dielectric levels
- Demonstrated through fabrication of trap with integrated three-dimensional microwave circuitry
- Researchers successfully trap and control hyperfine states of laser-cooled $\,^{9}$Be$^{+}$ ion positioned 35$\,\mu$m above trap surface
- Achievement marks significant advancement in quantum information processing and simulation
- Technology enables large-scale ion trap arrays for scalable quantum computing applications
- Ability to manipulate ions at precision opens up new possibilities for exploring complex quantum phenomena and conducting simulations previously unattainable
- Research paves way for future advancements in quantum technologies and lays foundation for practical quantum computing systems on larger scale

## Summary

In their paper titled "Multilayer Ion Trap Technology for Scalable Quantum Computing and Quantum Simulation," authors Amado Bautista-Salvador, Giorgio Zarantonello, Henning Hahn, Alan Preciado-Grijalva, Jonathan Morgner, Martina Wahnschaffe, and Christian Ospelkaus introduce a groundbreaking fabrication method for ion traps. This method allows for the creation of multilayer traps with unlimited metal-dielectric levels and is demonstrated through the fabrication of a trap equipped with integrated three-dimensional microwave circuitry. The researchers successfully trap and control the hyperfine states of a laser-cooled $\,^{9}$Be$^{+}$ ion positioned 35$\,\mu$m above the trap surface using this technology. This achievement marks a significant advancement in quantum information processing and simulation. By enabling large-scale ion trap arrays, this technology holds promise for scalable quantum computing applications. The ability to manipulate ions at such precision opens up new possibilities for exploring complex quantum phenomena and conducting simulations previously unattainable. Overall, this research paves the way for future advancements in quantum technologies and lays a solid foundation for realizing practical quantum computing systems on a larger scale.