Fabrication and characterization of aluminum airbridges for superconducting microwave circuits
By Zijun Chen, A. Megrant, J. Kelly, R. Barends, J. Bochmann, Yu Chen, B. Chiaro, A. Dunsworth, Evan Jeffrey, J. Mutus and 9 more. 2013
159 citations recorded by the source corpus.
Superconducting microwave circuits based on coplanar waveguides (CPW) are susceptible to parasitic slotline modes which can lead to loss and decoherence. We motivate the use of superconducting airbridges as a reliable method for preventing the propagation of these modes. We describe the fabrication of these airbridges on superconducting resonators, which we use to measure the loss due to placing airbridges over CPW lines. We find that the additional loss at single photon levels is small, and decreases at higher drive powers.
Subfields: Artificial Intelligence, Astronomy and Astrophysics, Biomedical Engineering
View Paper: https://www.semanticscholar.org/paper/599f891247b0b710c5607cd9ab13257c798dbef1
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Citations in the corpus
- High fidelity two-qubit gates on fluxoniums using a tunable coupler (2022, methodology): “Finally, aluminum free-standing crossovers are fabricated using conventional approach [35].”
- Low-Disorder Microwave Cavity Lattices for Quantum Simulation with Photons (2012, background): “Micro fabricated air bridges have been demonstrated in previous cQED experiments, and have demonstrated a reduction in the slot line modes by reducing the total inductance [16].”