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Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
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Published on: August 17, 2017

Modular cryostat for ion trapping with surface-electrode ion traps.

Grahame Vittorini1, Kenneth Wright, Kenneth R Brown

  • 1School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA. grahame.vittorini@gatech.edu

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We developed an affordable cryostat for ion traps using a pulse tube refrigerator. This system offers excellent optical access and efficient ion trapping performance with calcium ions.

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Area of Science:

  • Quantum Information Science
  • Atomic Physics
  • Experimental Physics

Background:

  • Surface-electrode ion traps are crucial for quantum computing and simulation.
  • Cryogenic environments are often required to improve ion trap performance by reducing thermal noise and blackbody radiation.

Purpose of the Study:

  • To present a novel, cost-effective cryostat designed for surface-electrode ion traps.
  • To enable enhanced optical access and efficient operation for ion trapping experiments.

Main Methods:

  • A cryostat was engineered around a commercial pulse tube refrigerator.
  • A modular vacuum enclosure with extensive optical access (nearly 360°) was designed.
  • Ion trapping performance was evaluated using (40)Ca(+) ions.

Main Results:

  • The system demonstrates excellent mechanical and thermal stability.
  • Successful trapping of (40)Ca(+) ions was achieved.
  • Low stray electric fields, long ion lifetimes, and minimal ion heating rates were observed.

Conclusions:

  • The developed cryostat is a practical and affordable solution for surface-electrode ion trap experiments.
  • The system's performance is suitable for demanding quantum information processing applications.
  • The design facilitates future modifications and rapid experimental turnaround.