Magnetic field resilient superconducting fractal resonators for coupling to free spins
Artikel i vetenskaplig tidskrift, 2012

We demonstrate a planar superconducting microwave resonator intended for use in applications requiring strong magnetic fields and high quality factors. In perpendicular magnetic fields of 20 mT, the niobium resonators maintain a quality factor above 25 000 over a wide range of applied powers, down to single photon population. In parallel field, the same quality factor is observed above 160 mT, the field required for coupling to free spins at a typical operating frequency of 5 GHz. We attribute the increased performance to the current branching in the fractal design. We demonstrate that our device can be used for spectroscopy by measuring the dissipation from a pico-mole of molecular spins.

Författare

Sebastian Erik de Graaf

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Andrey Danilov

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Astghik Adamyan

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Thilo Bauch

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Sergey Kubatkin

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Journal of Applied Physics

0021-8979 (ISSN) 1089-7550 (eISSN)

Vol. 112 12 123905- 123905

ELectric Field control Over Spin molecules (ELFOS)

Europeiska kommissionen (FP7), 2011-01-01 -- 2014-02-28.

Styrkeområden

Nanovetenskap och nanoteknik

Ämneskategorier

Den kondenserade materiens fysik

DOI

10.1063/1.4769208

Mer information

Skapat

2017-10-06