Local modulation of double optomechanically induced transparency and amplification

Abstract

We consider the probe absorption properties in a mechanically coupled optomechanical system in which the two coupled nanomechanical oscillators are driven by the time-dependent forces, respectively. It is found that the mechanical interaction splits the transparency window for a usual single-mode optomechanical system into two parts and then leads to appearance of the double optomechanically induced transparency. The distance between the two transparency positions (the frequency for the maximal transparency) is determined by the mechanical interaction amplitude. This can be explained by using optomechanical dressed-mode picture which is analogue to the interacting dark resonances in coherent atoms. When the mechanical resonators are driven by the external forces, the transparencies in the double-transparency spectrum can be increased into amplifications or be suppressed by tuning the amplitude of the forces. Additionally, it is shown that the double transparencies or the amplifications oscillate with the initial phases of the forces with a period of 2π. These investigations will be useful for more flexible controllability of multi-channel optical communication based on the optomechanical systems.

Induced Transparency with Optical Cavities

“…As for studies on transparency lineshapes, exotic spectral responses such as double/multiple OMIT and inverse OMIT have been manifested in different COM systems. [168][169][170][171][172][173][174][175][176][177][178][179][180] For example, Ma et al first proposed the tunable double OMIT via controlling the Coulomb interaction strength of two movable mirrors in a Fabry-Perot cavity, [169] and the system setup is shown in Figure 11d. Figure 11e shows the splitting evolution from single transparency window to double transparency windows by incorporating Coulomb coupling.…”

Microwave Amplification in a PT -symmetric-like Cavity Magnomechanical System

“…The study of light toward the perspective of quantum leads to some interesting phenomena different from classical ones. One of the most famous phenomenon is induced transparency (such as electromagnetically/optomechanically induced transparency) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16], as well as induced absorption [3,14] and induced amplification [15][16][17][18][19][20] which has been widely studied in current decades. Besides, signal amplification whose aim is to increase signal-to-noise ratio is significantly crucial in the field of quantum information and quantum optics.…”

Phase-dependent double optomechanically induced transparency in a hybrid optomechanical cavity system with coherently mechanical driving*

“…Compared with a traditional optomechanical system, in the hybrid optomechanical systems, the single-OMIT has been extended to the double-OMIT [10,13,36,37,37,[37][38][39][40]. Different from the single-window transmission spectrum observed in the OMIT, the double-window transmission spectrum can be observed in the double-OMIT.…”

“…OMIT is a phenomenon that a photon-cavity can be changed from opacity to transparency, it arises from the quantum interference effect between different energy levels [5,8,[21][22][23][24][25]. Similar to the electromagnetically induced transparency (EIT), which was observed in the three-level atomic systems [26][27][28][29], OMIT also can be been applied in many fields, including quantum ground-state cooling [30,31], fast and slow light [32,33], and quantum information processing [34,35].Compared with a traditional optomechanical system, in the hybrid optomechanical systems, the single-OMIT has been extended to the double-OMIT [10,13,36,37,37,[37][38][39][40]. Different from the single-window transmission spectrum observed in the OMIT, the double-window transmission spectrum can be observed in the double-OMIT.…”