Canadian Summer School on Quantum Information (CSSQI) (10th : 2010)

Measurement-based quantum computation Browne, Dan; Raussendorf, Robert


There are two fundamentally different ways of evolving a quantum state: unitary evolution and projective measurement. Unitary evolution is deterministic and reversible, whereas measurement is probabilistic and irreversible. Despite these differences, it turns out that universal quantum computation can be built on either. In this lecture we are concerned with quantum computation by measurement. We give an introduction to the subject, and discuss various aspects of this field, ranging from physical realization to fault-tolerance and foundations of quantum mechanics.

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