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Journal of Modern Optics

Enhanced multistability and slow-light effects in hybrid electro-optomechanics with embedded quantum dots

Sonam Mahajan, Neha Aggarwal, Madhav Kumar Singh, Aranya B. Bhattacherjee

Published Oct 7, 2026• 0 citations
Publisher

Abstract

We investigate optical multistability and Optomechanically Induced Transparency (OMIT) in a hybrid electro-optomechanical system incorporating quantum dot molecules within an optical cavity. The system is driven by a pump laser, a probe laser, and an external microwave pump, enabling rich nonlinear optical interactions. We explore the impact of various couplings on optical multistability. Furthermore, we show that electromechanical coupling significantly alters the OMIT transparency window and group velocity index, reinforcing the slow-light effect. These results provide valuable insights into controlling light propagation, making the system highly promising for applications in optical buffers, delay lines, quantum communication, and precision sensing technologies.

DOI
10.1080/09500340.2026.2743774

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We investigate optical multistability and Optomechanically Induced Transparency (OMIT) in a hybrid electro-optomechanical system incorporating quantum dot molecules within an optical cavity. The system is driven by a pump laser, a probe laser, and an external microwave pump, enabling rich nonlinear optical interactions. We explore the impact of various couplings on optical multistability. Furthermore, we show that electromechanical coupling significantly alters the OMIT transparency window and group velocity index, reinforcing the slow-light effect. These results provide valuable insights into controlling light propagation, making the system highly promising for applications in optical buffers, delay lines, quantum communication, and precision sensing technologies.
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In recent years, due to the rapid development of nano science and advanced semiconductor technology, one is able to observe more significant quantum optomechanical effects as optomechanical system turns smaller in size. Optomechanically induced transparency, fast and slow light, optical storage as well as other quantum optical and nonlinear optical effects have become the focus of research. On the other hand, the optomechanical systems coupled to other small subsystems (such as atoms, quantum dots, single electron transistors, etc.) also attract great attention in research. This is because the coupling system has not only provided more degrees of freedom for quantum manipulation, but also opened up more channels for classical and quantum information transfer. In this paper we study the optomechanically induced transparency and fast/slow light phase control in atom-assisted optomechanical cavity. Unlike the traditional systems, in this model the mechanical resonator is directly driven by a weak auxiliary driving field. We therefore find that with the change of amplitude ratio and phase difference between the auxiliary driving field and the probe field, the absorption and dispersion properties of the whole system and the group delay time vary accordingly. In the absence of auxiliary field, we observe the spectral features of the hybrid electromagnetically induced transparency and optomechanically induced transparency (OMIT) in an atom-cavity-oscillator tripartite optomechanical system. When there exists no phase difference between the auxiliary field and the probe field, we find that the membrane resonance absorption is enhanced with the increase of auxiliary field strength at resonance, causing the the optomechanically induced transparency to be suppressed, and therefore we can modify the amplitude of auxiliary field to control the depth of the OMIT window. When keeping amplitude ratio between the auxiliary field and the probe field unchanged, the modification of the phase difference between the auxiliary field and the probe field directly affects the we can not only realize the manipulation of OMIT window depth, but also control the transformation of tunable optical switch among "absorption", "transparent" and "gain" of the system. Therefore, through changing the phase of auxiliary field and probe field, we can not only realize the manipulation of OMIT window depth, but also control the transformation of tunable optical switch among "absorption" , "transparent" and "gain". In the meantime, we find that the system’s group delay time varies periodically with the change of phase difference. It is worth noting that by adjusting the phase difference and the atomic number, we can not only change the magnitude of the group delay, but also realize the conversion between slow light and fast light effect.
Abstract We investigate the phenomenon of optomechanically induced transparency assisted by a hybrid two-cavity optomechanical system. The system consists of two optical cavities and four mechanical resonators, and each optical cavity is filled with two-level atomic ensembles. Our study demonstrates that the characteristics of optomechanically induced transparency vary with different coupling parameters. Specifically, the number of transparent windows increases with the introduction of atomic ensembles and Coulomb interaction. Furthermore, the positions of the transparent points can be manipulated by the coupling parameters. It is found that increasing the Coulomb coupling between mechanical oscillators shifts the transparent points further apart. Furthermore, we also explore the slow/fast light effect by analyzing the phase and group delay of the probe field. Our approach enables the control of multiple optomechanically induced transparency and provides potential applications in quantum information processing.
We investigate the optical response of a hybrid electro-optomechanical system interacting with a qubit. Our experimentally feasible system explores tunable all-optical-switching, double-optomechanically induced transparency (OMIT) and optomechanically induced absorption (OMIA). The proposed system is also shown to generate anomalous dispersion. Our theoretical results show that the system can switch between OMIT and OMIA by manipulating the relevant system parameters. The normal-mode-splitting (NMS) effect induced by the interactions between the sub-systems is discussed in detail and the effects of varying the interactions on the NMS are analysed. These rich optical properties of the probe field may provide a promising platform for controllable all-optical-switch and various other quantum photonic devices.