1. Biophysics Program, Institute For Physical Science and Technology, University of Maryland, College Park, Maryland 20742, USA
2. Harish-Chandra Research Institute, Allahabad, India
3. Indian Institute of Science Education and Research, Pune, India
4. Department of Physics, Indian Institute of Technology Kanpur, Uttar Pradesh 208016, India
5. Mechanics and Applied Mathematics Group, Indian Institute of Technology Kanpur, Uttar Pradesh 208016, India