Inductive-detection electron-spin resonance spectroscopy with 65 spins/Hz sensitivity

Applied Physics Letters - Tập 111 Số 20 - 2017
Sebastian Probst1, Audrey Bienfait2,1, Philippe Campagne-Ibarcq3,1, J. Jarryd4, B Albanese1, Jéssica Fernanda Da Silva Barbosa1, T. Schenkel5, D. Vion1, D. Estève1, Klaus Mølmer6, John J. L. Morton7, Reinier Heeres1, Patrice Bertet1
1Quantronics Group, SPEC, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette Cedex 1 , France
2Institute for Molecular Engineering, University of Chicago 2 , Chicago, Illinois 60637, USA
3Departments of Applied Physics and Physics, Yale University 3 , New Haven, Connecticut 06520, USA
4School of Electrical Engineering and Telecommunications, University of New South Wales 4 , Anzac Parade, Sydney, NSW 2052, Australia
5Accelerator Technology and Applied Physics Division, Lawrence Berkeley National Laboratory 5 , Berkeley, California 94720, USA
6Department of Physics and Astronomy, Aarhus University 6 , Ny Munkegade 120, DK-8000 Aarhus C, Denmark
7London Centre for Nanotechnology, University College London 7 , London WC1H 0AH, United Kingdom

Tóm tắt

We report electron spin resonance spectroscopy measurements performed at millikelvin temperatures in a custom-built spectrometer comprising a superconducting micro-resonator at 7 GHz and a Josephson parametric amplifier. Owing to the small (∼10−12λ3) magnetic resonator mode volume and to the low noise of the parametric amplifier, the spectrometer's single shot sensitivity reaches 260 ± 40 spins/echo translating into 65±10  spins/Hz for repeated acquisition.

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Applied Physics Letters

Tập 111 Số 20

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