The long and short gamma-ray bursts are believed to be produced due tocollapse of massive stars and merger of compact binaries respectively.All these objects are rich in neutron and the jet outflow from these objectsmust have a neutron component in it. By postulating the neutron, anti-neutron oscillation in the gamma-ray burst fireball, we show that, 19-38 GeV neutrinos and anti-neutrinos can be produced due to annihilation of anti-neutrons withthe background neutrons. Observation of these neutrinoswill shed more light on the nature of the GRB progenitors and also be aunique signature of physics beyond the standard model. Apossible way of detecting these neutrinos in future is also discussed.

Quantum communication is the art of transferring quantum states from one place to another. The most fascinating example is Quantum Teleportation: an object dissolves here and reappears there without ever existing at any intermediate location. In the first half of this presentation we present the experimental challenges that had to be overcome in order to demonstrate teleportation from our lab to a Swisscom center downtown Geneva. In the second half we discuss some conceptual issues of quantum nonlocality. We consider it both from the point of view of the resources required to simulate it and as a resource enabling one to achieve tasks otherwise impossible