High Kinetic Inductance Superconducting Nanowire Resonators for Circuit QED in a Magnetic Field
By N. Samkharadze, A. Bruno, P. Scarlino, G. Zheng, David P. DiVincenzo, Leonardo DiCarlo, Lieven M. K. Vandersypen. 2015
248 citations recorded by the source corpus.
We present superconducting microwave-frequency resonators based on NbTiN nanowires. The small cross section of the nanowires minimizes vortex generation, making the resonators resilient to magnetic fields. Measured intrinsic quality factors exceed $2\times 10^5$ in a $6$ T in-plane magnetic field, and $3\times 10^4$ in a $350$ mT perpendicular magnetic field. Due to their high characteristic impedance, these resonators are expected to develop zero-point voltage fluctuations one order of magnitude larger than in standard coplanar waveguide resonators. These properties make the nanowire resonators well suited for circuit QED experiments needing strong coupling to quantum systems with small electric dipole moments and requiring a magnetic field, such as electrons in single and double quantum dots.
Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics
View Paper: https://www.semanticscholar.org/paper/0c9adaa9cc9f438fc8a783e8c557a7f55b0e4712
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Citations in the corpus
- Strong Coupling Cavity QED with Gate-Defined Double Quantum Dots Enabled by a High Impedance Resonator (2017, unknown): “kinetic-inductance thin-film resonators [35].”
- Transmon qubit with relaxation time exceeding 0.5 milliseconds (2021, background): “Elemental materials of Nb[9,10], Al[3,11], Ta[12] and compound materials of TiN[13], NbN[14], NbTiN[15], and ganular aluminum[16] are currently used.”