Electromagnetically induced transparency in a cavity optomechanical system with an atomic medium

Abstract

We investigate a cavity optomechanical system filled with a two-level atomic medium. When the system is driven by a coupling laser, the probe laser in output will show an analogue phenomenon of electromagnetically induced transparency. The larger the number of atoms, the wider the window of transparency. Our results again prove that the atomic medium enhances the radiation pressure.

Bistability and Entanglement of a Two-Mode Cavity Optomechanical System

“…See (8), one can find that only f 3 is proportion to E 1 and E 2 while f 3 must be in the region f 3− (f 1 ) < f 3 < f 3+ (f 1 ); therefore, we can control E 1 and E 2 to obtain the bistability. In Fig.…”

“…In this context, various types of optomechanical coupling [1][2][3] such as a semitransparent membrane within a standard Fabry-Pérot cavity [1], nanoelectromechanical systems formed by a microwave cavity capacitively coupled to a nanoresonator [2] and ultracold atoms interacting with an optical cavity [3] were proposed to construct optomechanical systems. Furthermore, optomechanics may possibly be applied to optical cavities in quantum limits [4] to realize the quantum interfaces for quantum information processing [5,6] and electromagnetically-induced transparency [7][8][9][10][11], and even to entangle photon and micro or nano-mechanical oscillators [12][13][14][15][16][17][18]. All these novel phenomena have become an interesting research topics.…”

Nonlinearity enhancement in optomechanical systems

“…In order to illustrate the nonlinearity, we employ the Hamiltonian in the interaction picture rather than using effective Hamiltonian (11). Due to the high frequency of the cavity and the large frequency difference between the cavity fields and the movable mirror, the environment of the cavity fields can be treated as zero temperature while the mirror should be in a thermal field.…”

“…It has been proved that entanglement of two resonators and of cavity and mirror can be generated by radiation pressure [1][2][3][4], while the pressure can be used to cool down the mirrors [5][6][7][8][9], and the analogous electromagnetically induced transparency phenomenon may happen in a cavity optomechanical system [10][11][12][13] and has been demonstrated in experiment [14]. In addition, optomechanical systems can be used as transducers for long-distance quantum communication [15,16].…”

Observation of electromagnetically induced transparency in a ring cavity

“…Traditional Experiments of EIT are based on atomic systems or some systems with coherent pump and probe fields [6]. * E-mail: myh_dlut@126.com Very recently, EIT in cavity optomechanical systems have stimulated great interest [7][8][9]. Interaction between localized optical and mechanical excitations has been easily manipulated in micro-and nanofabrication techniques [10].…”