Shaped pulses for transient compensation in quantum-limited electron spin resonance spectroscopy.

Authors:
Sebastian Probst
Sebastian Probst
Institute of Nursing
Switzerland
Vishal Ranjan
Vishal Ranjan
Central Drug Research Institute
India
Reinier Heeres
Reinier Heeres
Kavli Institute of Nanoscience
Berkeley | United States
Denis Vion
Denis Vion
Service de Physique de l'Etat Condensé (CNRS URA 2464)

J Magn Reson 2019 Jun 11;303:42-47. Epub 2019 Apr 11.

Quantronics Group, SPEC, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191, Gif-sur-Yvette Cedex, France. Electronic address:

In high sensitivity inductive electron spin resonance spectroscopy, superconducting microwave resonators with large quality factors are employed. While they enhance the sensitivity, they also distort considerably the shape of the applied rectangular microwave control pulses, which limits the degree of control over the spin ensemble. Here, we employ shaped microwave pulses compensating the signal distortion to drive the spins faster than the resonator bandwidth. This translates into a shorter echo, with enhanced signal-to-noise ratio. The shaped pulses are also useful to minimize the dead-time of our spectrometer, which allows to reduce the wait time between successive drive pulses.

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Source
https://linkinghub.elsevier.com/retrieve/pii/S10907807193006
Publisher Site
http://dx.doi.org/10.1016/j.jmr.2019.04.008DOI Listing
June 2019
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