Can we beat diffraction limit with quantum imaging?

  Gal Gumpel  ,  Erez Ribak  
Physics Dept., Technion

Heisenberg's uncertainty principle leads directly to the diffraction limit of optical systems. Present techniques for super-resolution imaging rely on either modification of the observed sample or using entangled photons. The former is not practical for distant objects whereas the latter is difficult to apply. A new technique suggests overcoming the diffraction limit via optical amplification: When a photon passes through an excited medium, it can stimulate the emission of identical photons in the same direction. These photons set up a wave-packet which behaves as a single quantum system, and the uncertainty is reduced linearly by the number of photons. This would be a straightforward way to overcome the diffraction limit, in absence of spontaneous emission. We aim to investigate the possibility to increase the prominence of the stimulated emitted photons by minimizing the noise contributed by spontaneous emitted photons.