Because of the NMR-QIP in Rio, the last week of November will gather big names of quantum information sciences at CBPF. We take this chance to have a colloquium delivered by Raymond Laflame! Laflame, whose PhD advisor was Stephen Hawking (yes, you read that!), is a pioneer of quantum information sciences with groundbreaking results like the KLM (he is the L) scheme for quantum computation with linear optics, quantum error correction codes, DQC1, innumerous contributions to quantum information processing with NMR, and… I cannot list all his contributions!

I hope by now you are convinced that you cannot miss this talk! Here are the details:

Speaker: Raymond Laflamme (Institute for Quantum Computing – University of Waterloo)

Title: Quantum Error Correction: from theory to practice

Coordinates: 26.11, 16:00h @ CBPF 6th floor auditorium

Abstract: Quantum information science promises to produce new technologies that marry two theories that have had a profound influence on society in the 20th mechanics and information theory. Its Achilles’ heel is the fragility of quantum states and processes. Without a method to control imperfection and imprecision of quantum devices, the probability that a quantum computation succeed will decrease exponentially in the number of gates it requires. In the last fifteen years, building on the discovery of quantum error correction, accuracy threshold theorems were proved showing that errors can be controlled using a reasonable amount of resources as long as the error rate is smaller than a certain threshold. We thus have a scalable theory describing how to control quantum systems. I will describe the basic ideas of quantum error correction, introduce a variety of mathematical techniques that have been developed to turn this theorem into a useful tool in the laboratory and will sum up with a quick overview of where we are at controlling quantum systems in practice.

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