How to count one photon and get a result of 1000 (Prof. A. Steinberg)
- Datum: 29.05.2018
- Uhrzeit: 14:30 - 15:30
- Vortragende(r): Prof. Dr. Aephraim M. Steinberg
- Quantum Optics Group, Centre for Quantum Information & Quantum Control, Department of Physics, University of Toronto, Canada
- Raum: New Lecture Hall, Room B 0.32
- Gastgeber: MPQ
Put simply, due to the striking effects of "post-selective" quantum measurements, a (very uncertain) measurement of photon number can yield an average value much larger than one, even when it is carried out on a single photon. I will say a few words about possible practical applications of this "weak value amplification" scheme, and their limitations.
Time permitting, I will also describe other future and past work related to quantum measurement and ultracold atoms – in particular, we have implemented a quantum-information-inspired protocol to beat “Rayleigh’s curse” for resolving closely-separated spots in classical imaging; and we are progressing towards an experiment which will permit us to track where atoms spend their time while tunneling through an optical barrier.