An ion trap apparatus with high optical access in multiple directions

Area of Science:

• Atomic, Molecular & Optical Physics
• Quantum Information Science
• Quantum Chemistry

Background:

• Lasers are essential for optical control in trapped ion and cold atom systems.
• Increasing optical accessibility is key to enhancing these systems' capabilities.
• Conventional setups often use bulky vacuum chambers, limiting optical access.

Purpose of the Study:

• To design and construct a novel segmented-blade ion trap with a compact glass vacuum cell.
• To improve optical accessibility for advanced laser operations and diagnostics.
• To create a versatile platform for quantum information processing and quantum chemistry.

Main Methods:

• Integration of a compact glass vacuum cell with a segmented-blade ion trap.
• Utilizing high-numerical-aperture (NA) lenses (NA ≤ 0.32 and NA ≤ 0.66) for enhanced optical access.
• Demonstration of laser beam delivery in multiple directions (transverse, oblique, longitudinal).

Main Results:

• Achieved high optical accessibility with a 15 mm distance between ions and the vacuum cell exterior.
• Successfully loaded and cooled strings of Ytterbium ions (¹⁷⁴Yb⁺ and ¹⁷¹Yb⁺), confirming trapping stability.
• Enabled simultaneous application of small laser spots for addressable Raman operations, optical tweezers, and fluorescence collection.

Conclusions:

• The new compact trap design significantly enhances optical access in trapped ion systems.
• This setup facilitates advanced quantum operations like addressable Raman control and optical tweezer arrays.
• The versatile trap serves as a module for quantum information processing and cold hybrid ion-atom system research.