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A gigantic, 10,000-mode, continuous-variable cluster state


Cluster states are an entangled resource state that enable quantum computing using adaptive measurements alone. This is surprising when one considers what this means: one can quantum compute simply by *looking* at a quantum systems in a particular way! The continuous-variable incarnations of these states are simple to make using lasers and can be scaled up with ease. In this talk, I will describe the theoretical underpinnings of measurement-based quantum computation using continuous-variable systems, and I will report on their experimental realization, including the recent demonstration of a 10,000-mode (!) cluster state. This is the largest entangled state ever created to date in which every constituent quantum system is individually addressable. Issues related to error correction and fault tolerance -- many of which remain open problems -- will also be discussed.