2018-06-272018-06-272000RAGI, R.; BASEIA, B. ; MIZRAHI, S. S. Non-classical properties of even circular states. Journal of Optics. B, Quantum and Semiclassical Optics, Bristol, v. 2, n. 3, p. 299-305, 2000.e- 1464-4266http://repositorio.bc.ufg.br/handle/ri/15313Here we investigate some general properties of the so-called even circular state (ECS) produced in a cavity, consisting of a superposition of N coherent states |αk (k = 1, 2, . . . , N) with the same |αk |. Several special states may emerge from this kind of superposition: in particular, when 1 (e|αk |2/N)N 4N a Fock state with N quanta is produced, whereas when (e|αk |2/N)N 1 one gets a vacuum state. We analyse the atomic scattering the ECSs produce when two-level atoms go through the cavity and also the non-classical depth of these states.engAcesso AbertoCircular statesAtomic scatteringNon-classical depthArtigo