International Conference on Transparent Optical Networks

Reflectivity tuning in coupled cavities considering dipole induced transparency and electromagnetic induced transparency

Gianluca Manzacca, Gabriella Cincotti

Published Jun 1, 2008• 0 citations

Abstract

In this paper, through an input-output formulation based on a full-quantum mechanical treatment of light matter interaction, some regimes to detect dipole induced transparency and electromagnetic induced transparency have been given. The main novelty of this paper is that the possibility to achieve total reflectivity from a system composed of many cavities could be obtained increasing the number of cavities, relaxing at the same time the condition for coupling a quantum state and a cavity mode. The main applications of this study are related to switching and all optical buffers, mainly in the field of quantum information processing.

DOI: 10.1109/icton.2008.4598395

Related papers

All-cavity electromagnetically induced transparency and optical switching: Semiclassical theory

Aurélien Dantan, Magnus Albert, Michael Drewsen

The transmission of a probe field experiencing electromagnetically induced transparency and optical switching in an atomic medium enclosed in an optical cavity is investigated. Using a semiclassical input-output theory for the interaction between an ensemble of four-level atoms and three optical cavity fields coupled to the same spatial cavity mode, we derive the steady-state transmission spectra of the probe field and discuss the dynamics of the intracavity field buildup. The analytical and numerical results are in good agreement with recent experiments with ion Coulomb crystals [M. Albert et al., Nature Photon. 5, 633 (2011)].

arXiv:1110.5299Physical Review AJan 26, 201230 citations

Quantum Optical-Effect-Based Tunable Switches and Delay Lines

Gianluca Manzacca, Kurt Hingerl, Gabriella Cincotti

We demonstrate that fast tunable optical switches and tunable slow-light devices can be designed as optical cavities entangled with quantum dots. We derive the analytical conditions for switching and tuning the filter transmittance, considering both dipole-induced transparency and electromagnetic-induced transparency effects.

IEEE Journal of Quantum ElectronicsAug 1, 20084 citations

Dipole-induced transparency in a cavity-waveguide system with attractive cavity modes

Zhao-Hui Peng, Chun-Xia Jia, Yuqing Zhang +4 more

Dipole-induced transparency (DIT) is one of the most well-known transparency effects in quantum optics and has wide applications in scalable quantum information processing and quantum computation. However, most of the existing literatures only focuses on the DIT effect with coherent dipole-cavity coupling, thus its universality in other types of coupling is still to be clarified. Here, we propose a feasible scheme to realize dissipative dipole-cavity coupling with the assistance of a highly dissipative microcavity, and explicitly exhibit cavity-mode attraction. We then investigate the DIT effect in a cavity-waveguide system with attractive cavity modes and find that it can still be achievable even though the probe light is resonant with two attractive cavity modes. Furthermore, we reveal its underlying transparency mechanism with eigenfrequencies and the effective susceptibility of the dipole-cavity system, and show that its transparency lies in the destructive interference of two attractive cavity modes with splitting damping rates instead of splitting resonance frequencies in coherent coupling. Moreover, we find that the attractive and repulsive phenomena of the effective susceptibility, which also plays an important role in the DIT effect, exist in the dipole-cavity system. Our findings may not only be of importance for gaining a more comprehensive understanding on the DIT effect, but also have potential applications in quantum networks.

Physical Review AMar 17, 20253 citations

Interaction-free all-optical switching at low light intensities in a multiatom cavity-QED system

Bichen Zou, Zheng Tan, Mohamed Musa +1 more

We propose a scheme of the interaction-free all-optical switching in a multiatom cavity-QED system consisting of three-level atoms confined in a cavity and coupled by a free-space control laser. A signal laser field is coupled into the cavity and its transmission through and reflection from the cavity form two output channels. We show that the free-space control laser induces destructive quantum interference in the excitation of the atom-cavity normal mode, which can be used to switch on or off the output signal light of the reflection and the transmission channels. When the control light is coupled to the atoms, the input signal light is nearly totally reflected and this means that there is no direct coupling of the control light and the signal light through the cavity-confined atoms. We present analytical and numerical calculations that show that this type of the interaction-free all-optical switching in the coupled cavity-atom system can be realized with high switching efficiencies and at low light intensities.

arXiv:1311.0831Physical Review AFeb 5, 201416 citations

Interference control of perfect photon absorption in cavity quantum electrodynamics

Liyong Wang, Ke Di, Yifu Zhu +1 more

We propose and analyze a scheme for controlling coherent photon transmission and reflection in a cavity-quantum-electrodynamics (CQED) system consisting of an optical resonator coupled with three-level atoms coherently prepared by a control laser from free space. When the control laser is off and the cavity is excited by two identical light fields from two ends of the cavity, the two input light fields can be completely absorbed by the CQED system and the light energy is converted into the excitation of the polariton states, but no light can escape from the cavity. Two distinct cases of controlling the perfect photon absorption are analyzed: (a) when the control laser is tuned to the atomic resonance and creates electromagnetically induced transparency, the perfect photon absorption is suppressed and the input light fields are nearly completely transmitted through the cavity; (b) when the control laser is tuned to the polariton state resonance and inhibits the polariton state excitation, the perfect photon absorption is again suppressed and the input light fields are nearly completely reflected from the cavity. Thus, the CQED system can act as a perfect absorber or near-perfect transmitter and/or reflector by simply turning the control laser off or on. Such interference control of the coherent photon-atom interaction in the CQED system should be useful for a variety of applications in optical logical devices.

arXiv:1610.02316Physical Review AJan 26, 201736 citations

All-optical control of superradiance and matter waves using a dispersive cavity

Shih-Wei Su, Zhen-Kai Lu, Nina Rohringer +2 more

Cavity quantum electrodynamics (CQED) plays an elegant role of studying strong coupling between light and matter. However, a non-mechanical, direct and dynamical control of the used mirrors is still unavailable. Here we theoretically investigate a novel type of dynamically controllable cavity composed of two atomic mirrors. Based on the electromagnetically induced transparency (EIT), the reflectance of atomic mirror is highly controllable through its dispersive properties by varying the intensity of applied coupling fields or the optical depth of atomic media. To demonstrate the uniqueness of the present cavity, we further show the possibility of manipulating vacuum-induced diffraction of a binary Bose-Einstein condensate (BEC) when loading it into a dispersive cavity and experiencing superradiant scatterings. Our results may provide a novel all-optical element for atom optics and shine new light on controlling light-matter interaction.

arXiv:1508.04878Aug 20, 20150 citations