In computational complexity theory, P and NP are two classes of problems. P is the class of decision problems that a deterministic Turing machine can solve in polynomial time. In useful terms, any ...

Raz, a professor at Princeton University and the Weizmann Institute of Science, and Tal, a postdoctoral fellow at Stanford University, define a specific kind of computational problem. They prove, with ...

Linear optics represents one of the best examples for demonstrating quantum physics. It works at room temperatures, and can be observed with relatively simple devices. In linear optics, one studies ...