Ultimate Limits of Quantum Measurements

From QCLab
Prof. Braun, Daniel (Universität Tübingen, Germany)
  • Speaker: Prof. Braun, Daniel (Universität Tübingen, Germany)
  • Date: September 12, 2017
  • Place: Science Building 433

Quantum enhanced measurements aim at measuring physical quantities with increased precision by using quantum mechanical effects. At the heart of most theoretical efforts in the field lies quantum parameter estimation theory, which provides a powerful and general framework for analyzing the performance of measurements in the quantum realm. It allows one to set benchmarks for a given measurement-setup, to develop strategies for improving measurements, and even to assess the falsifiability of some predictions of advanced theories such as quantum-gravity candidates.

The examples discussed range from the sensitivity of artificial noses, the measurement of the chemical potential of cold atoms, and techniques of Hamiltonian-engineering such as "signal-flooding", to measurements of the speed of light and its implications what we can possibly know about the metric of space-time.