1 European Laboratory for Non-linear Spectroscopy (LENS), Italy; National Institute of Optics, National Research Council, Italy; Faculty of Medicine, Institute for Experimental Cardiovascular Medicine, University of Freiburg, Freiburg in Breisgau, Germany. Electronic address: sacconi@lens.unifi.it.
2 Department of Systems Pharmacology, The University of Tokyo, Japan; Laboratory for Synthetic Biology, RIKEN BDR, Japan.
3 The Wyss Center for Bio and Neuroengineering, Geneva, Switzerland.
4 European Laboratory for Non-linear Spectroscopy (LENS), Italy; National Institute of Optics, National Research Council, Italy; Department of Physics and Astronomy, University of Florence, Italy.