ADAM SCHWARTZBERG, SINEAD GRIFFIN, PETER KROGSTRUP
Scaling superconducting qubits to large-scale quantum processors requires a deep understanding of how materials dictate coherence, loss, and controllability at the quantum level. This symposium will explore the rich physics governing qubit coherence, from the microscopic origins of dissipation to emergent many-body effects in quantum materials. Bringing together theorists and experimentalists, we will examine how a range of materials’ factors—spanning electronic structure, defect dynamics, and non-equilibrium quasiparticles—provide critical insights into loss mechanisms such as two-level systems (TLS), quasiparticle excitations, and dielectric noise. Discussions will highlight recent breakthroughs in advanced characterization techniques, atomic-scale materials synthesis, and theoretical frameworks that bridge condensed matter physics and quantum information science. By leveraging interdisciplinary perspectives, this symposium aims to push the boundaries of our fundamental understanding of superconducting qubits and pave the way for materials-driven breakthroughs in quantum computing.
Symposium Sponsor:

Thursday, August 14
Symposium Location: B59-4102
Symposium Schedule:
1:00 – 1:30 pm
Nano-engineering Josephson Junctions
Dave Pappas, Rigetti
1:30 – 2:00 pm
Millimeter-Wave Superconducting Circuits for Hybrid Systems
Aziza Suleymanzade, University of California, Berkeley
2:00- 2:15 pm
Advanced Materials and Scalable Nanofabrication for Next-Generation Superconducting Sensors
Aidar Kemelbay, Berkeley Lab
2:15 – 2:30 pm
Theoretical Design of Phonon Filters for Quantum Sensing and Qubits
Musa Hussien, Berkeley Lab
2:30 – 3:00 pm
Break
3:00 – 3:30 pm
Atomistic Origins of Decoherence in Superconducting Qubits
Vincenzo Lordi, Lawrence Livermore National Laboratory
3:30- 3:45 pm
Fabrication of Josephson Junctions with alternative materials using hybrid deposition techniques
Yashwanth Balaji, Berkeley Lab
3:45 – 4:00 pm
Acceptor-induced bulk dielectric loss in superconducting circuits on silicon
Zihuai Zhang, Berkeley Lab
4:00 – 4:30 pm
Characterization of superconducting 5-qubit processors
Kasper Grove-Rasmussen, University of Copenhagen
