David Palazzo (University of Glasgow)
Friday 22nd May, 2015 16:00-17:00 Maths 417
Quantum entanglement is one of the most striking evidence of the quantum behaviour of nature. It has no classical counterpart, as for the concept of spin, and from a point of view generally accepted it represents the non-locality of Quantum Mechanics.
In this talk we will first briefly review the principles of Quantum mechanics, and then define Quantum Entanglement as a system which is not "separable". We describe how the existence of this phenomenon led Einstein, Podolsky and Rosen to prove that Quantum Mechanics contains paradoxes, if we accept some reasonable postulates for a physical theory, and how different theories (the so called Hidden Variable Theories) arose as possible substitutes.
We shall then discuss Bell's inequalities, which are violated by quantum theories, and which showed the discrepancy between Hidden Variable Theories and experiments. Finally, we will discuss some applications of Quantum Entanglement, varying from the the construction of quantum computers to the possibility of describing consciousness by means of Quantum Mechanics.