1. Department of Physics, University of Washington, Seattle, Washington 98195, USA
2. CTFusion Inc., Seattle, Washington 98195, USA
3. Department of Aeronautics and Astronautics, University of Washington, Seattle, Washington 98195, USA
4. Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA
5. Department of Mechanical Engineering, University of Washington, Seattle, Washington 98195, USA