Quantum Chance: Nonlocality, Teleportation and Other Quantum Marvels
Nicolas Gisin
Language: English
Pages: 109
ISBN: 3319054724
Format: PDF / Kindle (mobi) / ePub
From Bell's Theorem to experiments in quantum entanglement, this book helps readers gain a solid understanding of one of the most fascinating areas of contemporary physics. It illuminates the many logical paradoxes of quantum physics without using mathematics.
Introducing Geology: A Guide to the World of Rocks
Five Billion Years of Solitude
The Worst Enemy of Science?: Essays in Memory of Paul Feyerabend
computer is still long and goes well beyond the scope of this book (and in fact one should speak rather of a quantum processor than a genuine all-purpose computer). Telepathy and True Twins At this juncture, some readers may think of telepathy, or perhaps twins who, when separated, make the same decisions or suffer the same ills. But such escape routes would be misleading. Let us begin with the twins. What characterises twins is the fact that they share the same set of genes. They carry the
occur in a state in which its position is indeterminate. So it simply does not have a precise position, rather like a cloud. Naturally, a cloud has an average position (the position of its center of mass, as physicists would say), and the electron also has an average position. But, and it is a very significant difference with the cloud, an electron is not made up of a multitude of water droplets, nor of any other kind of droplets. The electron is indivisible. And yet, while it is indivisible, it
completely overturns our previous pictures of nature and will doubtless give rise to a range of new technologies that will simply look like magic. In Chap. 2 , we present the notion of correlation which lies at the heart of the matter by discussing a game that we shall refer to as Bell’s game. We show there that certain correlations cannot be produced if we are only allowed interactions propagating from point to point through space. This chapter will be crucial for the following, even though
to think rationally in a meaningful way. Without free will, there could be no rational thought. As a consequence, it is quite simply impossible for science and philosophy to deny free will. Some physical theories are deterministic, as exemplified by Newtonian mechanics or certain interpretations of quantum theory. Raising these theories to the status of ultimate truths in a dogmatic, almost religious way amounts to a straight error of logic, since they are contradicted by our experience of free
writing systematically about ‘local realism’ rather than ‘local variables’. I suspect that this was more a matter of choosing one’s words advisedly than the conclusion of any deep reflection. It is fashionable today in some circles to say that we have the choice between nonlocality and non-realism. The first thing to do on hearing this would of course be to define what is meant by non-realism (bearing in mind that nonlocality means ‘what cannot be described using only local entities’).23
