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.
Ningyuan Jia, Nathan Schine, Alexandros Georgakopoulos, Albert Ryou, Ariel Sommer, Jonathan Simon, "A Strongly Interacting Polaritonic Quantum Dot" Nature Physics https://doi.org/10.1038/s41567-018-0071-6 (2018)
Peter Ivanov, Fabian Letscher, Jonathan Simon, Michael Fleischhauer, "Adiabatic flux insertion and growing of Laughlin states of cavity Rydberg polaritons" arXiv: 1803.04156 (2018)
Nathan Schine, Michelle Chalupnik, Tankut Can, Andrey Gromov, Jonathan Simon, "Measuring Electromagnetic and Gravitational Responses of Photonic Landau Levels" arXiv 1802.04418 (2018)
Tomoki Ozawa, Hannah M. Price, Alberto Amo, Nathan Goldman, Mohammad Hafezi, Ling Lu, Mikael Rechtsman, David Schuster, Jonathan Simon, Oded Zilberberg, Iacopo Carusotto, "Topological Photonics" arXiv: 1802.04173 (2018)
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)