Photons move quickly and don't interact with one another. Atoms interact but move very slowly. Our cavity platform allows us to marry these disparate toolsets to explore strongly interacting photons for quantum information processing and the science of synthetic materials. We employ highly excited ("Rydberg") atoms within an optical resonator to mediate photon-photon interactions, creating quasi-particles called "Cavity Rydberg Polaritons" whose mass, trapping, and cyclotron orbits may be controlled via resonator geometry, and whose interactions are tuned through the strength of a 480nm laser field which excites the atoms up to the Rydberg (n~100) state.
Jia Ningyuan, Nathan Schine, Alexandros Georgakopoulos, Albert Ryou, Ariel Sommer, Jonathan Simon, "Photons and polaritons in a broken-time-reversal non-planar resonator" Physical Review A 97, 013802 (2018)
Ningyuan Jia, Nathan Schine, Alexandros Georgakopoulos, Albert Ryou, Ariel Sommer, Jonathan Simon, "A Strongly Interacting Polaritonic Quantum Dot" arXiv:1705.07475
Albert Ryou, Jonathan Simon, "Active Cancellation of Acoustical Resonances with an FPGA FIR Filter" Review of Scientific Instruments Volume 88, 1 2017
Nathan Schine, Albert Ryou, Andrey Gromov, Ariel Sommer, Jonathan Simon, "Synthetic Landau levels for photons" Nature 534, 671-5 2016
Ariel Sommer, Jonathan Simon, "Engineering photonic Floquet Hamiltonians through Fabry-Perot resonators" New Journal of Physics 3, 035008 2016