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Journal Articles Applied Physics Letters Year : 2020

Electron spin resonance spectroscopy with femtoliter detection volume

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Abstract

We report electron spin resonance measurements of donors in silicon at millikelvin temperatures using a superconducting LC planar micro-resonator and a Josephson parametric amplifier. The resonator includes a nanowire inductor, defining a femtoliter detection volume. Due to strain in the substrate, the donor resonance lines are heavily broadened. Single-spin to photon coupling strengths up to ∼3 kHz are observed. The single shot sensitivity is 120 ± 24 spins/Hahn echo, corresponding to ≈ 12±3 spins /√Hz for repeated acquisition.

Dates and versions

cea-03116402 , version 1 (20-01-2021)

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Cite

V. Ranjan, S. Probst, B. Albanese, T. Schenkel, D. Vion, et al.. Electron spin resonance spectroscopy with femtoliter detection volume. Applied Physics Letters, 2020, 116 (18), pp.184002. ⟨10.1063/5.0004322⟩. ⟨cea-03116402⟩
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