We characterize niobium nitride (NbN) coplanar waveguide resonators, which were fabricated from a 10-nm-thick film on silicon dioxide grown by sputter deposition. For films grown at 180 °C, we report a superconducting critical temperature of 7.4 K associated with a normal square resistance of , leading to a kinetic inductance of 192 pH/◻. We fabricated resonators with a characteristic impedance up to and internal quality factors in the single photon regime at zero magnetic field. Moreover, in the many photon regime, the resonators present a high magnetic field resilience with in a 6 T in-plane magnetic field and in a 300 mT out-of-plane magnetic field. These findings make such resonators a compelling choice for circuit quantum electrodynamics experiments involving quantum systems with small electric dipole moments operated in finite magnetic fields.
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1 February 2021
Research Article|
February 02 2021
Magnetic field resilient high kinetic inductance superconducting niobium nitride coplanar waveguide resonators
Cécile Xinqing Yu
;
Cécile Xinqing Yu
a)
Univ. Grenoble Alpes, CEA, Grenoble INP, IRIG, PHELIQS
, 38000 Grenoble, France
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Simon Zihlmann
;
Simon Zihlmann
Univ. Grenoble Alpes, CEA, Grenoble INP, IRIG, PHELIQS
, 38000 Grenoble, France
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Gonzalo Troncoso Fernández-Bada;
Gonzalo Troncoso Fernández-Bada
Univ. Grenoble Alpes, CEA, Grenoble INP, IRIG, PHELIQS
, 38000 Grenoble, France
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Jean-Luc Thomassin;
Jean-Luc Thomassin
Univ. Grenoble Alpes, CEA, Grenoble INP, IRIG, PHELIQS
, 38000 Grenoble, France
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Frédéric Gustavo;
Frédéric Gustavo
Univ. Grenoble Alpes, CEA, Grenoble INP, IRIG, PHELIQS
, 38000 Grenoble, France
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Étienne Dumur
;
Étienne Dumur
Univ. Grenoble Alpes, CEA, Grenoble INP, IRIG, PHELIQS
, 38000 Grenoble, France
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Romain Maurand
Romain Maurand
a)
Univ. Grenoble Alpes, CEA, Grenoble INP, IRIG, PHELIQS
, 38000 Grenoble, France
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Appl. Phys. Lett. 118, 054001 (2021)
Article history
Received:
December 08 2020
Accepted:
January 19 2021
Citation
Cécile Xinqing Yu, Simon Zihlmann, Gonzalo Troncoso Fernández-Bada, Jean-Luc Thomassin, Frédéric Gustavo, Étienne Dumur, Romain Maurand; Magnetic field resilient high kinetic inductance superconducting niobium nitride coplanar waveguide resonators. Appl. Phys. Lett. 1 February 2021; 118 (5): 054001. https://doi.org/10.1063/5.0039945
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