There is no measurement that can directly observe the wave function of a quantum mechanical system, but the wave function is still enormously useful as its (complex) square represents the probability ...

Quantum state diffusion framework makes it possible to characterize quantum measurement in terms of entropy production ...

Even given a set of possible quantum states for our cosmos, it's impossible for us to determine which one of them is correct ...

Prolate spheroidal wave functions (PSWFs) and their discrete counterparts – the discrete prolate spheroidal sequences (DPSSs) – have emerged as essential tools in the analysis of band‐limited ...

One of the discoveries that fundamentally distinguished the emerging field of quantum physics from classical physics was the ...