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Related Concept Videos

Mass Analyzers: Common Types01:19

Mass Analyzers: Common Types

674
The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...
674

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Related Experiment Video

Updated: Aug 14, 2025

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
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A fully fiber-integrated ion trap for portable quantum technologies.

Xavier Fernandez-Gonzalvo1, Matthias Keller2

  • 1Department of Physics and Astronomy, University of Sussex, Brighton, BN1 9QH, UK. x.fernandez-gonzalvo@sussex.ac.uk.

Scientific Reports
|January 10, 2023
PubMed
Summary

This study introduces a compact, fiber-coupled ion trap for quantum technologies. The robust design enhances portability and performance, making it ideal for applications like atomic clocks outside traditional labs.

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Area of Science:

  • Quantum Information Science
  • Atomic Physics
  • Optical Engineering

Background:

  • Trapped ions are key for quantum technologies but require bulky, sensitive free-space optics.
  • Existing ion trap setups are often large and susceptible to environmental interference.

Purpose of the Study:

  • To develop a compact and robust single-ion trap.
  • To integrate optical fibers directly into the ion trap structure.
  • To reduce system bulk and environmental sensitivity for portable quantum applications.

Main Methods:

  • Designed and fabricated a single-ion trap with integrated optical fibers.
  • Delivered laser light and collected ion fluorescence via embedded fibers.
  • Characterized system performance, including signal-to-background ratio and state readout fidelity.
  • Tested resilience to thermal variations (22-53°C) and vibrations (34 Hz, 300 Hz).

Main Results:

  • Achieved signal-to-background ratios of approximately 50.
  • Demonstrated internal state readout fidelity exceeding 99% in 600 μs.
  • Confirmed no performance degradation under thermal and vibration stress.
  • Successfully trapped 40Ca+ ions.

Conclusions:

  • The fiber-coupled ion trap offers a compact and robust solution for quantum technologies.
  • Eliminates the need for optical windows, simplifying experimental setup.
  • Well-suited for portable quantum devices, including optical atomic clocks, and adaptable to other ion species.