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

  • Author(s): Probst, S;
  • Bienfait, A;
  • Campagne-Ibarcq, P;
  • Pla, JJ;
  • Albanese, B;
  • Da Silva Barbosa, JF;
  • Schenkel, T;
  • Vion, D;
  • Esteve, D;
  • Mølmer, K;
  • Morton, JJL;
  • Heeres, R;
  • Bertet, P
  • et al.

Published Web Location

https://arxiv.org/abs/1708.09287
No data is associated with this publication.
Abstract

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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