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In-vacuum active electronics for microfabricated ion traps.

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Researchers developed an in-vacuum digital-to-analog converter (DAC) system to control complex microfabricated ion traps. This innovation significantly reduces vacuum feedthroughs while maintaining high performance for quantum information processing.

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Area of Science:

  • Quantum information science
  • Atomic physics
  • Electrical engineering

Background:

  • Microfabricated ion traps are crucial for quantum information processing.
  • Increasing trap complexity demands a high number of digital-to-analog converter (DAC) channels.
  • Scaling external DAC connections into vacuum chambers presents significant challenges.

Purpose of the Study:

  • To develop and test an in-vacuum DAC system for microfabricated ion traps.
  • To reduce the number of vacuum feedthroughs required for trap control.
  • To assess the performance of the in-vacuum DAC system using trapped ions.

Main Methods:

  • Designed and implemented an in-vacuum DAC system.
  • Utilized only 9 vacuum feedthroughs to control a 78-electrode ion trap.
  • Characterized the system by trapping single and multiple (40)Ca(+) ions.

Main Results:

  • Successfully controlled a complex 78-electrode ion trap with minimal feedthroughs.
  • Achieved comparable axial mode stability to external DAC systems.
  • Demonstrated comparable ion heating rates and transport fidelities for trapped ions.

Conclusions:

  • The in-vacuum DAC system offers a scalable solution for controlling complex ion traps.
  • This technology simplifies vacuum integration and reduces hardware complexity.
  • The system performance is suitable for advanced quantum information applications.