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PIRSA:14100073

Video URL

https://pirsa.org/14100073

Non local weak measurements

Brodutch, A. (2014). Non local weak measurements. Perimeter Institute for Theoretical Physics. https://pirsa.org/14100073

Aharon Brodutch Institute for Quantum Computing (IQC)

Talk numberPIRSA:14100073
DOI10.48660/14100073
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

Weak measurement is increasingly acknowledged as an important theoretical and experimental tool. Weak values- the results of weak measurements- are often used to understand seemingly paradoxical quantum behavior. Until now however, it was not known how to perform a weak non-local measurement of a general operator. Such a procedure is necessary if we are to take the associated `weak values' seriously as a physical quantity. We propose a novel scheme for performing non-local weak measurement which is based on the principle of quantum erasure. This method can be used for a large class of observables including those related to Hardy's paradox.