Theory HEP Seminar

Quantum error correction and toy models of holography

Yan Gobeil

McGill

Quantum information and quantum gravity are two important subjects of physics that have been found recently to be related. An important way of studying quantum gravity is by using holography and there have been multiple models developed in order to understand some aspects of it. In this talk I will introduce one of these models that makes use of tools from quantum information. I will first discuss the subject of quantum error correction which is very important in the field of quantum information. I will then explain how it can be used to build toy models for the AdS/CFT correspondence and explain what aspects of the duality it can describe. We will discuss in details the simplest model that is the three qubits code and I will introduce the more complicated models based on tensor networks. This talk is based on a lecture given by Daniel Harlow at the It from Qubits summer school.