SCIENCE - Feynman wasn't joking: Modeling quantum dynamics with ground state wavefunctions

(Phys.org) —Amongst the late Richard Feynman's many prolific and profound contributions to quantum mechanics, the eponymous Feynman clock is perhaps one of the more innovative. Conceived as a solution to the problem of quantum simulation, the Feynman clock proposes using quantum computers to simulate quantum systems – and in so doing, conjectures that if a quantum system moves stepwise forward and then backward in time in equal increments, it wou ...

http://phys.org/news/2013-10-feynman-wasnt-quantum-dynamics-ground.htm