Special CM-AMO Seminar | Quantum Information Processing Using Spins and Topological Quantum Systems, Speaker: Liang Jiang (California Institute of Technology)

Speaker: Liang Jiang (California Institute of Technology)

Recently, there are exciting breakthroughs at the interface of condensed matter physics, atomic-molecular-optical physics, nanoscience, and quantum information science. However, quantum systems suffer from decoherence due to the unavoidable system-environment interaction, which poses a major obstacle to the advancement of all these research areas. Nevertheless, conventional quantum systems like spins can be protected from decoherence via dynamic decoupling. I will present some recent results of diamond-based spin systems that can be used for high-resolution nano-magnetometers and room-temperature quantum computers. Another promising approach to suppressing decoherence is to use topological quantum systems, which emerge from condensed matter physics and are insensitive to local perturbations. I will discuss some new ideas to create and probe topological quantum systems, and propose a hybrid platform between topological and conventional quantum systems that can combine the advantages from both.