Dear All,
This weeks research day on Thursday will be at the Computer Science Building room IFW D 42. Tobias will present his Master Thesis.
Speaker: Tobias Ambühl Title: Secure Bits with Quantum Pseudo-Telepathy Time: 5 pm Place: IFW D42
Abstract:
Motivated by the concept of quantum pseudo-telepathy games as well as by quantum key distribution protocols we try to answer the question whether it is possible to generate a perfectly secure, shared bit between two parties by a single usage of quantum correlations and a performance of local operations on the input and output. We provide both parties with some prior shared entanglement and the possibility of postselection, e.g. discard of inputs and outputs, aiming to prevent any eavesdropper bound by the non-signaling condition from successfully performing an attack. After, in a first step, defining the framework and setting up the requirements we are going to see that quantum mechanics does not allow for a physical simulation of such correlations. For the case of binary output we will even see that, in order to make perfectly correlated bits perfectly secure, we would need maximal non-local correlations which also prohibits a quantum physical representation.
Cheers,
Dejan