Research
Novel superconducting circuits
Superconducting circuits are a flexible platform for engineering strongly-interacting systems. Our research is focused on building superconducting circuits with multiple degrees of freedom that can act as qubits protected from various types of noise or as quantum simulators of interacting materials.
Figure: Circuit diagram, optical image, and spectrum of a strongly-coupled fluxonium molecule
Hybrid superconducting circuits
We are coupling topological and semiconducting materials to superconducting circuits. Coherent superconducting qubits offer the possibility of probing these materials with extremely fine energy resolution and can also act as ancillas for readout and manipulation of topological and semiconductor-based qubits.
Figure: Scanning-electron microscope images of a fluxonium coupled to a semiconducting nanowire.
Probing topological materials
Topological materials host excitations such as fractionalized quasiparticles that reflect the topological nature of their ground states. We are building scanning resonator-based sensors to investigate the electronic properties of topological materials at high and low frequencies.
Figure: Compressibility of bilayer graphene subject to high magnetic fields measured with a scanning single-electron transistor.