1. The Martin Fisher School of Physics, Brandeis University, Waltham, MA 02454
2. Single Molecule Imaging of Genome Duplication and Maintenance Laboratory, The Francis Crick Institute, NW1 1AT London, UK
3. Univ Lyon, Ens de Lyon, Univ Claude Bernard, CNRS, Laboratoire de Physique, F-69342 Lyon, France
4. Department of Physics Institute for Soft Matter Synthesis and Metrology, Georgetown University, Washington, DC 20057
5. Department of Physics, University of California at Santa Barbara, Santa Barbara, CA 93106
6. Biomolecular Science and Engineering, University of California at Santa Barbara, Santa Barbara, CA 93106