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Penning micro-trap for quantum computing.

Shreyans Jain1,2, Tobias Sägesser3,4, Pavel Hrmo3,4

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Researchers developed a micro-fabricated Penning ion trap using a magnetic field, overcoming radio-frequency limitations. This advancement enables scalable trapped-ion quantum computing with enhanced ion transport and control.

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Area of Science:

  • Quantum Information Science
  • Atomic Physics
  • Microfabrication

Background:

  • Trapped ions in radio-frequency traps are a leading approach for quantum computing due to high-fidelity gates and long coherence times.
  • Radio-frequency traps face scaling challenges, including high voltage requirements, power dissipation, and restricted ion movement.

Purpose of the Study:

  • To develop a scalable trapped-ion system by replacing radio-frequency fields with a magnetic field.
  • To demonstrate full quantum control and arbitrary ion transport in a micro-fabricated Penning trap.

Main Methods:

  • Fabrication of a micro-scale Penning ion trap.
  • Utilizing a 3 Tesla magnetic field instead of radio-frequency fields.
  • Demonstrating quantum control and ion transport above the chip surface.

Main Results:

  • Successful realization of a micro-fabricated Penning ion trap.
  • Demonstration of full quantum control of a trapped ion.
  • Achieved arbitrary transport of the ion within the trapping plane.

Conclusions:

  • The Penning micro-trap approach removes scaling restrictions associated with radio-frequency traps.
  • This technology enables a modified quantum charge-coupled device architecture with improved connectivity for large-scale quantum computing.
  • Facilitates advancements in quantum simulation and quantum sensing applications.