1. Department of Physical Science, Indian Institute of Science Education and Research (IISER), Kolkata, Mohanpur, Nadia, West Bengal 741252, India
2. Department of Electronics and Communication Engineering, Temple City Institute of Technology & Engineering, Bhubaneswar, Orissa 752057, India
3. School of Physics, University of Hyderabad, Gachibowli, Hyderabad, Andhra Pradesh 500046, India