Quantum broadcasting problem in low-power signal processing

  • Bastian Steudel (MPI MiS, Leipzig)
A3 01 (Sophus-Lie room)


We assume that discussions on fundamental bounds in classical low-power computing require a quantum theoretical description and that further some kind of synchronization through a 'timing signal' is needed during the computation process.

More explicitly, since any closed quantum system with non-trivial evolution contains some information about the time at which it has been initialized, it can be viewed as a 'quantum clock'. We quantify the timing information that it contains using Holevo-Information and discuss limitations that occur if one wants to broadcast this information as well as thermodynamic implications of these limitations.

Mainly this is work by Dominik Janzing to which I contributed through my master thesis.

Nihat Ay

Max Planck Institute for Mathematics in the Sciences

Arleta Szkoła

Max-Planck-Institut für Mathematik in den Naturwissenschaften