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Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
11:45

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps

Published on: August 17, 2017

Cryogenic ion trapping systems with surface-electrode traps.

P B Antohi1, D Schuster, G M Akselrod

  • 1Department of Physics, Center for Ultracold Atoms, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. apaul@mit.edu

The Review of Scientific Instruments
|February 5, 2009
PubMed
Summary
This summary is machine-generated.

We developed fast-cooling cryogenic ion trap systems for quantum technology research. These systems enable rapid setup and stable ion trapping, crucial for advancing quantum computing and sensing applications.

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Area of Science:

  • Atomic, Molecular, and Optical (AMO) Physics
  • Quantum Information Science
  • Experimental Physics

Background:

  • Cryogenic radiofrequency (rf) ion traps are essential for high-precision quantum experiments.
  • Achieving ultra-high vacuum (UHV) and cryogenic temperatures quickly is challenging but vital for reducing noise and increasing ion lifetimes.
  • Surface-electrode ion traps offer advantages for scalability and integration in quantum systems.

Purpose of the Study:

  • To present two novel, simple cryogenic rf ion trap systems.
  • To demonstrate rapid achievement of cryogenic temperatures and UHV conditions.
  • To evaluate the systems' suitability for testing advanced ion trap designs, specifically surface-electrode traps.

Main Methods:

  • Operation in a liquid helium bath cryostat and a low-vibration closed-cycle cryostat.
  • Utilizing buffer gas cooling for rapid temperature stabilization.
  • Employing laser ablation for loading strontium-88 (Sr+) ions into surface-electrode traps.
  • Implementing Doppler cooling for ion manipulation and observation.

Main Results:

  • Cryogenic temperatures and UHV pressures achieved in under 12 hours.
  • Closed-cycle cryostat vibration amplitude measured below 106 nm.
  • Successful loading and trapping of (88)Sr+ ions in surface-electrode traps.
  • Observed ion crystals with optically resolved ions and trapped lifetimes exceeding 2500 minutes.

Conclusions:

  • The developed cryogenic ion trap systems offer fast turn-around times and stable operation.
  • These systems are highly suitable for testing and developing surface-electrode ion traps.
  • The long ion lifetimes demonstrate the potential for high-fidelity quantum operations.