SPICE Workshop on Quantum materials and quantum information science May 19th - 21st, 2026
Joel Wang
Integrating two-dimensional (2D) van der Waals (vdW) materials with superconducting quantum circuits offers a promising pathway toward new quantum hardware platforms at the interface of quantum materials and quantum information science. Owing to their crystalline nature, atomically flat interfaces, and exceptional tunability, vdW materials can be assembled into designer heterostructures with functionalities difficult to realize in conventional superconducting circuits. These capabilities have enabled a new generation of quantum circuit elements, including voltage-tunable Josephson junctions, compact lumped-element capacitors, and high-kinetic-inductance superconducting devices. Beyond their applications in quantum engineering, the integration of 2D quantum materials with circuit quantum electrodynamics (cQED) architectures provides a powerful platform for probing collective quantum coherence and emergent phenomena in correlated electron systems. In this talk, I will review recent progress in superconducting quantum circuits based on vdW materials, focusing on the interplay between material properties, device design, and quantum coherence. I will highlight our recent demonstration of all-vdW merged-element transmon qubits that achieve coherence times with T1 approaching 100 μs while leveraging the intrinsic advantages of vdW heterostructure engineering. Finally, I will discuss prospects for wafer-scale superconducting quantum circuits constructed entirely from vdW materials, and how this emerging approach may enable more scalable quantum computing architectures, hybrid quantum systems, and advanced quantum sensing technologies.