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  • 2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference
  • (Optica Publishing Group, 2017),
  • paper EA_11_3

Widefield Microwave Imaging using NV Centres

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Abstract

Microwave devices form the backbone of many scientific and technological applications, from quantum devices (atom chips, ion traps, atomic clocks, qubits...) to telecommunications (wifi, mobile phones...). There is great interest in techniques to image the microwave near-fields close to such devices, which promise to transform device development, characterisation, and debugging. We have developed techniques for imaging magnetic fields at microwave frequencies (GHz to tens of GHz) [Fig. 1] using both atomic vapor cells [1-3] and scanning probe nitrogen-vacancy (NV) centres in diamond [4-6]. We detect the fields through coherent Rabi oscillations driven on transitions within the atoms or NV centres. Compared to traditional antenna-based microwave imaging, our techniques represent a fundamentally new approach to microwave sensing, providing intrinsically calibrated measurements with high spatial and temporal resolution.

© 2017 IEEE

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