A class of objects name for this property is generated in a spin-S system by a unitary rotation of a fully polarized ground state.
A class of objects name for this property is generated in a spin-S system by a unitary rotation of a fully polarized ground state. Those objects with this property are identified by an eigenvalue usually labeled alpha or z, and the probability of finding n particles in one of them is Poisson with parameter alpha-squared. A quantum phenomenon in which this property is lost explains wave function collapse as a leakage of quantum nature into a classical environment. Roy Glauber won a Nobel Prize for studying minimal-uncertainty quantum (*) states with this property. Those states are unitary displacements of the harmonic oscillator ground state. The spatial type of this property ensures strong directionality, while its temporal type ensures that light is monochromatic; both of those properties are possessed by lasers. For 10 points, name this property of waves with a uniform frequency and fixed relative phase.
A class of objects name for this property is generated in a spin-S system by a unitary rotation of a fully polarized ground state.
coherence [or coherent]