Penning micro-trap for quantum computing

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.