A quantum state is the condition a quantum mechanical system is in. The state is usually described by a wave function. It is different from classical states of systems in that the quantum system has separate, discrete levels, whereas the states of a...

Introduction to... Mathematical formulation...

We studied the neutron quantum states in the potential well formed by the Earth's gravitational field and a horizontal mirror. The estimated characteristic sizes of the neutron wave functions in two lowest quantum states correspond to their expectations with an accuracy of [approximately...

In Douglas Adams' The Hitchhiker's Guide to the Galaxy, a hungover physicist creates the "infinite improbability drive," which uses unlikely events to propel starships across the cosmos at impossible speeds. He accomplishes this marvel by linking a quantum computer to a "fresh cup...