Best Quasiprobability
The Wigner function is a mathematical tool used in quantum mechanics. It provides an alternative approach to describing quantum states by representing their amplitude across phase space – a combination of position and momentum. This allows physicists to visualize and analyze quantum behavior, partic...
The Glauber-Sudarshan P representation is a phase-space formulation of quantum optics in which a density operator is expressed as a weighted integral over coherent-state projectors. Its distribution, commonly called the P function, behaves like a classical probability density for states that admit a...
The Husimi Q function is a quasiprobability distribution used in quantum mechanics to represent quantum states in phase space. It is constructed by smoothing the Wigner function, which produces a non-negative distribution that resembles a fuzzy density. Because it is always non-negative, it is often...
