Correcting Errors in a World Governed By the Uncertainty Principle

In the classical world, error correction can be achieved by duplicating the information multiple times. In the quantum world, however, duplicating quantum information is not possible due to the no-cloning theorem. This theorem seems to present an obstacle to formulating a theory of quantum error correction. How can we correct corrupted quantum information that cannot be duplicated? Amazingly, a solution exists to this problem. In this talk, we will discuss the key idea of quantum error correction, which is crucial for robust quantum computation as well as secure quantum communication.