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	Podcast:		Theoretical Physics - From Outer Space to Plasma
	Episode:		Quantum Systems from Group up
	Category:		Education
	Duration:		00:40:13
	Publish Date:		2018-07-06 07:03:23
	Description:		This talk reviews the modern formulation of the basic ideas of quantum mechanics. We start by explaining what quantum amplitudes are, how they lead to the idea of a quantum state and how these states evolve in time. We then discuss what happens when a measurement is made before describing correlated ('entangled') systems. Applying these ideas to two-state systems ('qubits') we point out that the complexity of computing the evolution of an N qubit system grows like exp(N)
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