PIRSA:17070051

Contextuality, the PBR theorem and their effects on simulation of quantum systems

Karanjai, A. (2017). Contextuality, the PBR theorem and their effects on simulation of quantum systems. Perimeter Institute. https://pirsa.org/17070051

Karanjai, Angela. Contextuality, the PBR theorem and their effects on simulation of quantum systems. Perimeter Institute, Jul. 27, 2017, https://pirsa.org/17070051 

          @misc{ pirsa_PIRSA:17070051,
            doi = {10.48660/17070051},
            url = {https://pirsa.org/17070051},
            author = {Karanjai, Angela},
            keywords = {Quantum Foundations, Quantum Information},
            language = {en},
            title = {Contextuality, the PBR theorem and their effects on simulation of quantum systems},
            publisher = {Perimeter Institute},
            year = {2017},
            month = {jul},
            note = {PIRSA:17070051 see, \url{https://pirsa.org}}
          }

Angela Karanjai University of Sydney

DOI 10.48660/17070051
Collection
Talk Type Conference
Subject

Abstract

This talk will be about constraints on any model which reproduces the qubit stabilizer sub-theory. We show that the minimum number of classical bits required to specify the state of an n-qubit system must scale as ~ n(n-3)/2 in any model that does not contradict the predictions of the quantum stabilizer sub-theory. The Gottesman-Knill algorithm, which is a strong simulation algorithm is in fact, very close to this bound as it scales at ~n(2n+1). This is a result of state-independent contextuality which puts a lower bound on the minimum number of states a model requires in order to reproduce the statistics of the qubit stabilizer sub-theory.