Transfer of non-classical properties in dual channel directional coupler

[摘要] Quantum uncertainties of the quadratures and the photon statistics are analyzed in the coupling interaction between two modes of radiation via a dual channel directional coupler. The motivation of this work is to control the quantum properties of one light beam by another. Under the rotating wave approximation we show that if one of the modes is coherent (classical) and the other one squeezed, then the squeezing and non-Poissonianness of the photon statistics can be induced in the coherent mode. It is also shown that the transferred squeezing and non-classical number statistics in the second mode is of a new type. In the affected mode the squeezed quadrature remains squeezed, whereas the other quadrature is anti-squeezed, throughout except at the times where both of them return to a coherent value. The photon number of the affected mode shows both sub-Poissonian and super-Poissonian statistics as time evolves. (C) 1997 Elsevier Science B.V.

[发布日期] 1997-07-15