We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Automated superconducting qubit characterization platform based on a modified 3D printer.
- Authors
Li, Haochen; Thant, Soe Gon Yee; Dumke, Rainer
- Abstract
Josephson Junctions are important components in superconducting qubits. It introduces anharmonicity to the energy level spacings of the qubit which allow us to identify two unique quantum energy states for computing. It is difficult to fabricate multiple junctions within the same desired parameter range. Characterisation of the junctions is, therefore, a necessary step after fabrication. In particular, the critical current of the junctions is determined by measuring their normal state resistance. This is done via two-point or four-point resistance measurement at a manual probe station which is a time-consuming process, especially for wafer-scale fabrication. This bottleneck can be circumvented by automation with object detection. The base of the automated probe station is a 3D printer modified with multiple Arduino Uno microcontrollers and motorized linear stages. The automation process is achieved via auto-alignment of the probes and an automatic measurement procedure. As a result, the fully automated process will take about 27–29 s to measure the resistance of one junction which saves 28%–51% of the time compared to the manual probe station and can be unsupervised. Due to the reuse of a commercial 3D printer, the cost of this system is 800 SGD which is much less than comparable commercial solutions.
- Subjects
QUBITS; OBJECT recognition (Computer vision); QUANTUM states; ARDUINO (Microcontroller); CRITICAL currents; 3-D printers; JOSEPHSON junctions; JOSEPHSON effect
- Publication
International Journal of Quantum Information, 2024, Vol 22, Issue 1, p1
- ISSN
0219-7499
- Publication type
Article
- DOI
10.1142/S0219749923500387