Second Adar – The Month of Quantum Physics
Today is Rosh Chodesh Adar Bet – the New Moon and the beginning of the second month of Adar. If we ever to have a month commemorating quantum physics, there would be no more appropriate month for that than the second month of Adar – Adar Bet. A state of superposition is a physical state unique to quantum theory. In classical physics (such as Newtonian mechanics or thermodynamics) a physical system is either in one state or the other, say in a state A or a state B. Only in quantum physics a system can be in a blended state C which is a linear superposition of states A and B. For example, the spin of an electron can be either Up or Down. However, an electron can be in a blurred state of [...]