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Related Experiment Video

Updated: Jan 20, 2026

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
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Near-Field Scanning Microwave Microscopy in the Single Photon Regime.

S Geaney1,2, D Cox3, T Hönigl-Decrinis4

  • 1National Physical Laboratory, Hampton Road, Teddington, TW11 0LW, UK. shaun.geaney@npl.co.uk.

Scientific Reports
|August 31, 2019
PubMed
Summary

We developed a low-power cryogenic near-field scanning microwave microscope (NSMM) for observing nano-scale dielectric contrast. This tool operates at single microwave photon levels, advancing quantum technology development.

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Area of Science:

  • Quantum technology
  • Materials science
  • Nanotechnology

Background:

  • Nano-scale structures are crucial for quantum technology applications.
  • Understanding microwave properties at the nanoscale is essential.
  • Existing methods lack sensitivity at low power levels.

Purpose of the Study:

  • To introduce a novel low-power cryogenic near-field scanning microwave microscope (NSMM).
  • To achieve nano-scale dielectric contrast at extremely low power.
  • To explore its potential for quantum coherent interactions.

Main Methods:

  • Development of a cryogenic near-field scanning microwave microscope (NSMM).
  • Operation at significantly reduced power levels (10^9 times lower than typical).
  • Measurement of nano-scale dielectric contrast down to the single microwave photon regime.

Main Results:

  • Demonstration of nano-scale dielectric contrast at ultra-low power.
  • Capability to operate in the single microwave photon regime.
  • Significant reduction in power consumption compared to conventional NSMMs.

Conclusions:

  • The developed low-power cryogenic NSMM is a promising tool for quantum technology.
  • It enables high-resolution microwave property analysis at the nanoscale.
  • Further development is needed for direct quantum coherent interaction with two-level systems.