Department of Physics, University of California, Santa Barbara, Santa Barbara, California, United States of America, Institut für Physik, Humboldt-Universität zu Berlin, Berlin, Germany, Department of Mathematics, University of North Carolina, Chapel Hill, Chapel Hill, North Carolina, United States of America.|Department of Physics, University of California, Santa Barbara, Santa Barbara, California, United States of America, Sage Center for the Study of the Mind, University of California, Santa Barbara, Santa Barbara, California, United States of America, Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvannia, United States of America.|Department of Physics, University of California, Santa Barbara, Santa Barbara, California, United States of America.|Department of Mathematics, University of North Carolina, Chapel Hill, Chapel Hill, North Carolina, United States of America, Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, Chapel Hill, North Carolina, United States of America.