Transparency and tunable slow-fast light in a hybrid cavity optomechanical system

Abstract

We theoretically investigate the optomechanically induced transparency (OMIT) phenomenon in a hybrid optomechanical system composing of an optomechanical cavity and a traditional one. A Kerr medium is inserted in the optomechanical cavity and the other traps the atomic ensemble. We demonstrate the appearance of electromagnetically and optomechanically induced transparency when there is only Kerr medium or atoms in the system. We give an explicit explanation for the mechanism of the transparency. Moreover, we set up new scheme for the measurement of Kerr coefficient and the single atom-photon coupling strength. It is shown that Kerr nonlinearity can inhibit the normal mode splitting (NMS) when the tunnel strength is strong coupling. Furthermore, in the output field, slow light and fast light are converted to realize the tunable switch from slow light to fast light. This study has some important guiding significance in the fields of the high precision measurement and quantum information processing.

Observation of nonlinear dynamics in an optical levitation system

“…Similarly to the radiation-pressure induced optical spring effect, the positive photothermal stiffness experienced during self-locking by the system is paralleled by a negative damping coefficient [34,35]. The amount by which the natural damping of the acoustic mode is modified by the photothermal interaction can be estimated by the eigenvalues of the Jacobian matrix [30,[55][56][57][58].…”

Induced Transparency with Optical Cavities

“…[195] Cross-Kerr effects have been investigated in parity-time-symmetric resonators, where there emerges the absorption-to-amplification switching by tuning the tunnel coupling. [196] In addition, these years have seen the introduction of other intriguing phenomena relevant to OMIT, such as nonlinear effects, [195,[197][198][199][200] Casimir force, [201] and loss-induced transparency (LIT). [202] As an induced transparency in optomechanical cavities, OMIT poses a new perspective of light storage and can be applied to inaccessible wavelength regions in EIT.…”

“…In addition, these years have seen the introduction of other intriguing phenomena relevant to OMIT, such as nonlinear effects, [ 195,197–200 ] Casimir force, [ 201 ] and loss‐induced transparency (LIT). [ 202 ]…”

Optomechanically induced transparency and possible application in a quadratic-coupling optomechanical system with an induced electric field

“…Khan et al [58] recently reported controllable OMIT in a two-cavity optomechanical system due to the interference between the two possible routs for excitations. Liao et al [59] investigated OMIT in a hybrid optomechanical system with Kerr medium which could be tuned from slow light to fast light. In addition, Huang et al [63] studied the Fano resonance in a quadratic coupling optomechanical system with a nonlinear Kerr medium.…”