Nenad Kralj

Nenad Kralj
Early Stage Researcher
Universià di Camerino

Academic background

  • March 2014 – present: PhD student at the University of Camerino, Italy
  • Sept 2014 – present: External Associate at the CAST experiment (CERN Axion Solar Telescope)
  • Sept 2013 – Oct 2015: Research and Teaching Assistant at the Department of Physics, University of Rijeka, Croatia
  • Jan 2013: MSc in Physics, Faculty of Science, Zagreb, Croatia; Title of Thesis: “Monopole Excitations of Deformed Atomic Nuclei”; Supervisor: Prof. Tamara Nikšić

 Current research topic

I am interested in the radiation pressure interaction of a high-finesse optical cavity with a membrane inside. The current goal is to enter a regime in which the pump is resonant with a certain fundamental mode of the cavity, whereas the sideband is resonant with a different transversal mode, separated from the fundamental one by the mechanical mode frequency. This would allow for three-mode cooling, presumably much more efficient than the two-mode case, since the pump, and not just the sideband, is resonant with the cavity. Furthermore, I would like to introduce another pump, resonant with the higher transversal mode, and study the interplay between the cooling and the heating of the mechanical mode, as well as the squeezing of the output light, arising in that case. In this regime, by properly adjusting the power of the driving fields resonant with the two sidebands one can also generate robust and large entanglement between the output optical cavity field, and we plan to detect them through homodyne detection.


  • Nikšić, N. Kralj, T. Tutiš, D. Vretenar, P. Ring: Implementation of the finite amplitude method for the relativistic quasiparticle random-phase approximation, Phys. Rev. C 88, 044327


  • Enrico Fermi International School of Physics, Course 190: “Frontiers in Modern Optics”, Varenna, Italy, June 30th – July 5th, 2014
  • Les Houches Summer School on Quantum Optomechanics and Nanomechanics, Les Houches, France, August 3rd – August 28, 2015