Time: Thursday 30 April 2015 – 1:00pm
Place: New Horizons (Building 82), Theatre G29 (map)
Mapping a photon in flight
Dr Charles Bamber, National Research Council of Canada
The conventional wisdom of quantum mechanics says that the quantum state cannot be measured because measurement collapses the wavefunction and information is necessarily lost. We demonstrate that by decreasing the strength of the measurement, the quantum state can be measured directly as the wavefunction need not collapse when it interacts with the measuring apparatus. Furthermore, we have measured the quantum state of a photon as it evolves in free flight and observe good agreement with theory.