All Abstracts | Poster Abstracts | Talk Abstracts

Weak Measurement, Uncertainty Relationships, and Tradeoffs in Experimental Quantum Measurement

Aephraim Steinberg, University of Toronto

(Session 10 : Saturday from 1:15 - 2:00)

Abstract. I will discuss several ongoing projects which investigate quantum measurement, its limitations, and the range of strategies available. In particular, I will describe an experiment using weak measurements and ideas from cluster-state quantum computing to demonstrate a violation of Heisenberg's proposed relationship between measurement precision and measurement disturbance; and work investigating the use of weak-value amplification for measuring nonlinear optical phase shifts at the single-photon level. If time permits, I will also discuss ongoing work investigating the optimal choice of separable or entangled states for tasks ranging from phase estimation or magnetometry to process tomography to detection of decoherence.