Advanced neutron and scattering techniques for quantum devices

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Sonja Holm-Dahlin

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Semiconductor and Computer Chip Manufacturing at Fab or Foundry with robotic arms with silicon wafers

Advanced neutron and scattering techniques for quantum devices

We offer specialized characterization of wafer stacks for quantum device fabrication, leveraging state-of-the-art neutron and X-ray scattering methods.

These powerful, non-destructive techniques provide unparalleled insight into the structure, interfaces, and properties of complex multilayer wafers - these are capabilities essential for the development of high-performance quantum technologies.

Key features:

  • Precise evaluation of multilayer architectures:
    High-resolution x-ray reflectometry enables accurate determination of layer thickness, density, and interface roughness within wafer stacks, enabling precise evaluation of multilayer architectures.
  • Distinguish isotopes within the layers:
    Neutron reflectometry enables highly sensitive analysis of thin films and multilayer structures, with unique advantages for distinguishing between isotopes within the layers, critical for optimizing quantum device performance.
  • In-plane structural characterization of surface and near-surface features:
    Grazing incidence x-ray scattering (GIXS) is ideal for analyzing lateral ordering, size distribution, and spatial arrangement of nanostructures, including quantum dots.

Benefits for quantum technologies:

  • Non-destructive, Depth-resolved Characterization:
    Access structural information on buried interfaces and internal layers without damaging wafers, ensuring the reliability and integrity of samples for further device processing.
  • Data-Driven Process Optimization:
    Detailed structural and compositional analysis enables early detection of defects and process variations, supporting reproducibility, enhanced quantum coherence, and overall device stability.

Applications:

  • Superconducting qubits, topological quantum devices, semiconductor spin and charge qubits, self-assembled nanostructures, and quantum dot architectures.
  • In-depth analysis of engineered substrates for quantum information science.

These services are relevant to quantum hardware companies, academic research groups, and R&D teams at the forefront of quantum-enabled technologies.

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