Licentiate thesis, 2018
We have fabricated and characterized 20nm thick niobium-nitride nanowires with a width of 40nm, implementing a superinductance with impedance Z = 6.795kΩ. We demonstrate internal quality factors Qi = 2.5×10^4 at single photon excitation, which is signiﬁcantly higher than values reported in devices with similar materials and geometries. Moreover, we show that the dominant dissipation in our nanowires is not an intrinsic property of the disordered ﬁlms, but can instead be fully understood within the well-studied framework of two-level systems.
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Superinductance for very long-lived quantum coherence
Chalmers, 2013-10-01 -- 2014-06-30.
Areas of Advance
Nanoscience and Nanotechnology (2010-2017)
Other Physics Topics
Other Electrical Engineering, Electronic Engineering, Information Engineering
Condensed Matter Physics
Technical report MC2 - Department of Microtechnology and Nanoscience, Chalmers University of Technology: MC2-392
Chalmers University of Technology