Photonic Materials in Quantum Circuits

Photonic Materials in Quantum Circuits

Photonic Materials in Quantum Circuits

Superconducting quantum circuits are an emerging quantum computing platform which now competes aggressively with the best trapped-ion systems. In a collaboration with the Schuster Lab, we are using the exquisite quantum coherence of these devices to build synthetic materials composed of strongly interacting microwave photons.


  • The figure above shows our first attempt at an autonomously stabilized photonic Mott insulator
  • We have demonstrated the first topologically insulating circuit, in both the time-reversal-symmetric and time-reversal-broken regimes.
  • We have developed theoretical descriptions of topologically non-trivial, interacting Harper-Hofstadter models, as well as tools for populating them with particles at zero-temperature and non-zero chemical potential.
  • The macroscopic nature of these systems enables us to achieve single-photon, single-lattice site resolution-- akin to a quantum gas microscope for photonic quantum materials!

Clai Owens, Aman LaChapelle, Brendan Saxberg, Brandon Anderson, Ruichao Ma, Jonathan Simon, David I Schuster, "Quarter-Flux Hofstadter Lattice in Qubit-Compatible Microwave Cavity Array" arXiv:1708.01651

Ruichao Ma, Clai Owens, Andrew Houck, David I Schuster, Jonathan Simon, "An Autonomous Stabilizer for Incompressible Photon Fluids and Solids" Physical Review A 95, 043811 2017

Ruichao Ma, Clai Owens, Aman LaChapelle, David I Schuster, Jonathan Simon, "Hamiltonian tomography of photonic lattices" Physical Review A 95, 062120 2017

Brandon M Anderson, Ruichao Ma, Clai Owens, David I Schuster, Jonathan Simon, "Engineering Topological Many-Body Materials in Microwave Cavity Arrays" Physical Review X 4, 041043 2016

Jia Ningyuan, Clai Owens, Ariel Sommer, David Schuster, Jonathan Simon, "Time-and site-resolved dynamics in a topological circuit" Physical Review X 2, 021031 2015