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Q: Fachverband Quantenoptik und Photonik

Q 40: Poster: Quantum Optics and Photonics II

Q 40.52: Poster

Mittwoch, 8. März 2017, 17:00–19:00, P OG2

Widefield Microwave Imaging using NV Centres — •Andrew Horsley¹, Janik Wolters¹, Patrick Appel¹, James Wood¹, Jocelyn Achard², Alexandre Tallaire², Patrick Maletinsky¹, and Philipp Treutlein¹ — ¹University of Basel, Switzerland — ²LSPM, Universite Paris 13, France

We present a microscope for widefield electromagnetic field imaging using NV centres in diamond. We expect to realise >1 mm² field of view and sub-ms temporal resolution, exceeding the state-of-the-art for widefield NV imaging. The microscope provides 5 µm spatial resolution, given by the thickness of the near-uniaxial NV layer, and our current sensitivity is hundreds of nT Hz^−1/2, which we expect to improve.

We use the microscope for microwave near-field imaging, which we are pursuing in the context of microwave device characterisation [2-4]. Such 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...). Our technique promises to transform device development, characterisation, and debugging. Our high-resolution NV microscope may also be of interest for medical microwave sensing and imaging, particularly in skin-cancer screening.

[1] Steinert et al., Rev. Sci. Instr. 81, 043705 (2010)

[2] Horsley and Treutlein, APL 108, 211102 (2016)

[3] Horsley, Du, and Treutlein, NJP (FTC), 17(11), 112002, (2015)

[4] Appel et al., NJP (FTC), 17(11), 112001, (2015)