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arXiv:2103.16818 · Journal of Modern Optics

Optical response properties of a hybrid electro-optomechanical system interacting with a qubit

Tarun Kumar, Surabhi Yadav, Aranya B. Bhattacherjee

Published Feb 9, 2022• 5 citations
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Abstract

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.

DOI
10.1080/09500340.2022.2034191

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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.
Abstract We theoretically investigate the optical response in a hybrid quantum optomechanical system consisting of two optically coupled micro-cavities in which a two-level system (qubit) is coupled with a mechanical membrane. The qubit can either be a defect which interacts with the mechanical oscillator via the linear Jaynes–Cummings interaction or a superconducting charge qubit coupled with the mechanical mode via non-linear interaction. We find that coherent perfect transmission (CPT), coherent perfect synthesis (CPS) and optomechanically induced absorption (OMIA) can be generated by suitably adjusting the system parameters. We find that the qubit and its interaction with the mechanical oscillator emerges as a new handle to control these quantum optical properties. The presence of the qubit results in four points where CPT and CPS can be realized compared to the pure optomechanical case (i.e. in the absence of a qubit) where only three points are attained. This shows that the presence of the qubit gives us more flexibility in choosing the appropriate parameter regime where CPT and CPS can be attained and controlled. We also find that OMIA shows three distinct peaks both in the linear and non-linear cases. In the absence of the qubit, OMIA is converted to optomechanically induced transmission (OMIT). An increase in the qubit decay rate also shows a transition from OMIA to OMIT. Our study reveals that the optical response of the non-linear case is relatively rapid and more sensitive compared to the linear case to changes in the system parameters. This demonstrates the potential use of this hybrid system in designing a tunable all-optical switch and photon router, both of which form important elements of a quantum information network.
We propose a system for achieving some adjustable quantum coherence effects, including the normal-mode splitting (NMS), the optomechanically induced transparency (OMIT), and the optomechanically induced absorption (OMIA). In this system, two tunnel-coupled optomechanical cavities are each driven by a coupling field and coupled to an atomic ensemble. Besides, one of the cavities is also injected with a probe field. When the system works under different conditions, we can obtain the NMS, the OMIT, and the OMIA, respectively. These effects can be flexibly adjusted by the tunnel coupling between the two cavities, the power of the coupling lasers, and the coupling strength between the atomic ensembles and the cavity fields. Furthermore, we can realize the OMIT even if the oscillating mirrors have relatively larger decay rates.
Abstract We theoretically investigate the optical-response properties of the four-mode quadratically coupled optomechanical system (OMS), in which two standard OMSs with quadratic coupling are coupled to each other via a common waveguide. In the presence of a strong control field applied to one cavity and a weak probe field applied to the other, we show that by suitably tuning the system parameters, there appears the normal mode splitting, optomechanically induced absorption, and double or triple electromagnetically induced transparency phenomena in the probe absorption spectrum. In particular, the explicit physical explanations for those fantastic phenomena are detailed discussed. Moreover, we also show that our proposal can be exploited to implement the optical switch as well as the slow and fast light effects.
Abstract We investigate the optical properties of a hybrid solid-state optomechanical microcavity containing two coupled quantum wells interacting with the cavity mode in the presence of a third-order nonlinear medium and a mechanically compliant distributed Bragg reflector (MC-DBR). The MC-DBR interacts with the cavity mode via the nonlinear radiation pressure effect. The steady state mean-field analysis shows the existence of optical bistability, which can be utilized to design all optical tunable switch. The coupling between the two quantum wells, the interaction between the excitons and the optical mode, the Kerr nonlinearity, and the optomechanical interaction can be tuned to operate the optical switch at lower input laser power. The fluctuation dynamics demonstrate the presence of optomechanically induced transparency (OMIT) and optomechanically induced absorption (OMIA). We find that both OMIT and OMIA can be manipulated efficiently by optomechanical coupling strength and the quantum well tunneling rate.
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.
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.