AVS 72 Session AQS-SuA: AVS Quantum Science Workshop Session (ALL-INVITED SESSION)

In this talk, I will discuss the fabrication of superconducting JJ qubits from the perspective of scalable manufacturing. Particular emphasis will be placed on two major fabrication approaches: single-step shadow (angled) evaporation and multi-step normal-angle deposition. I will examine the advantages and limitations of each approach, focusing on key scaling metrics including qubit frequency variability, junction yield, process reproducibility, and compatibility with large-scale circuit integration. I will further discuss the importance of frequency allocation and precise frequency targeting in multi-qubit processors, highlighting post-fabrication tuning techniques such as alternating-bias-assisted annealing (ABAA) and laser trimming.

* Rigetti Computing Team:

The Quantum Information Sciences and Technology (QIST) branch at the Air Force Research Laboratory’s Information Directorate (Rome Lab) performs cutting-edge experimental and theoretical research in a multitude of topics at the frontiers of quantum computing and quantum networking. Conducted in support of Air Force strategic objectives in quantum information processing and entanglement distribution, the QIST branch has numerous active research efforts in quantum algorithms and quantum technologies such as trapped-ion systems, integrated quantum photonics, and superconducting quantum circuitry. In this talk, I will give an overview of the research efforts at Rome Lab to develop quantum interconnects between the different quantum technologies (a.k.a. heterogeneous quantum interfaces) and highlight plans to establish a quantum networking testbed for fundamental investigations of entanglement distribution and heterogeneous network design.