Liquid metal printing for superconducting circuits

• URL: http://arxiv.org/abs/2511.09705v1
• Date: Fri, 14 Nov 2025 01:05:22 GMT
• Title: Liquid metal printing for superconducting circuits
• Authors: Alexander Kreiner, Navid Hussain, Ritika Dhundhwal, Haoran Duan, Nicolas Zapata, Gabriel Cadilha Marques, Tino Cubaynes, Torsten Scherer, Wolfgang Wernsdorfer, Michael Hirtz, Ioan Mihai Pop, Jasmin Aghassi-Hagmann, Thomas Reisinger,
• Abstract summary: Liquid-metal based micro-pipette printing is suited for fabricating superconducting lumped-element resonators.<n>Our results open up new avenues in the hardware implementation of scaled-up superconducting quantum computers.
• Score: 30.755867253334163
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Superconducting circuits are a promising platform for implementing fault-tolerant quantum computers, quantum limited amplifiers, ultra-low power superconducting electronics, and sensors with ultimate sensitivity. Typically, circuit fabrication is realized by standard nanolithography, generally associated with a high level of control over defects and contaminants. Additive approaches have not been used so far since they are expected to be inferior in terms of superconducting properties or quantum coherence. This work shows that liquid-metal based micro-pipette printing is suited for fabricating superconducting lumped-element resonators with high internal quality factors. The applicability of our technique for low-loss superconducting device fabrication and the possibility to locally add metal structures, without affecting any preexisting circuit elements, is a further advantage. Our results open up new avenues in the hardware implementation of scaled-up superconducting quantum computers.

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