A degenerate three-level laser coupled to a squeezed vacuum reservoir

Abstract

Employing the master equation for a three-level laser driven by coherent light and coupled to a squeezed vacuum reservoir, we obtain stochastic differential equations associated with the normal ordering. Using the solutions of the stochastic differential equations, we calculate the quadrature variance, the squeezing spectrum, the mean photon number, and the variance of the photon number. It turns out that the degree of squeezing increases with the linear gain coefficient or the squeeze parameter. It is also found that the driving coherent light decreases the mean photon number.Usage Secondary publications and information retrieval purposes.PACS numbers May be entered using the \pacs{#1} command.Structure You may use the description environment to structure your abstract; use the optional argument of the \item command to give the category of each item.

Squeezing in Both the Plus and Minus Quadratures with the Uncertainty Relation Perfectly Holding

“…There has been a considerable interest to generate squeezed light using various quantum optical processes such as subharmonic generation [9,10 ], second harmonic generation [1,11], and fourwave mixing [4,5,12]. Squeezed light can also be generated by a three-level laser under certain conditions [9,[13][14][15][16][17][18][19]. A three-level laser is a quantum optical system in which light is generated by three-level atoms inside a cavity usually coupled to a vacuum reservoir.…”