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Generation of Two-Atom Maximal Entanglement and Quantum Information Transfer via Microtoroidal Cavity-Atom System

Bao Ri-Yan, Wang Xiao-Hua, Huang Yan-Tang

We propose a scheme for generation of two-atom maximally entangled states and the quantum information transfer between two atoms via two identical atoms in resonation with ultrahigh-Q toroidal microcavities.

Chinese Physics LettersAug 1, 20105 citations

Two-Mode Maximally Entangled State Generated by the Microtoroid Cavity-Atom System

Xiaohua Wang, 鲍日焰, Yantang Huang

International Journal of Theoretical PhysicsNov 9, 20102 citations

Transfer, generation and monitoring of quantum entanglement in systems composed by atoms coupled to microtoroidal cavities

Emilio H. S. Sousa

Orientador: José Antonio Roversi

Jan 1, 20190 citations

Generation and transfer of entangled states between two connected microtoroidal cavities: Analysis of different types of coupling

Emilio H. S. Sousa, A. Vidiella-Barranco, José Antonio Roversi

arXiv:2209.15638OptikOct 3, 20221 citation

Generation of Multi-Atom W States in Microtoroidal Cavity-Atom System

Yan Tang Huang, Ling Ou, Yu Huang

We proposed a scheme for the generation of multi–atom W states with two-photon Jaynes-Cummings Model in ultrahigh-Q toroidal microcavities. We consider that the two modes, clockwise (CW) and counterclockwise (CCW) modes inside the microtoroidal resonator, can be produced by embedding Bragg grating in the microtoroidal.

Advanced materials researchSep 1, 20120 citations

Selective Engineering for Preparing Entangled Steady States in Cavity QED Setup

Emilio H. S. Sousa, José Antonio Roversi

We propose a dissipative scheme to prepare maximally entangled steady states in cavity QED setup, consisting of two two-level atoms interacting with the two counter-propagating whispering-gallery modes (WGMs) of a microtoroidal resonator. Using spontaneous emission and cavity decay as the dissipative quantum dynamical source, we show that the steady state of this system can be steered into a two-atom single state as well as into a two-mode single state. We probed the compound system with weak field coupled to the system via a tapered fiber waveguide, finding it is possible to determine whether the two atoms or two modes are driven to a maximally entangled state. Through the transmission and reflection measurements, without disturbing the atomic state, when the cavity modes are being driven, or without disturbing the cavity field state, when a single atom being driven, one can get the information about the maximal entanglement. We also investigated for both subsystem, two-atom and two-mode states, the entanglement generation and under what conditions one can transfer entanglement from one subsystem to the other. Our scheme can be selectively used to prepare both maximally entangled atomic state as well as maximally entangled cavity-modes state, providing an efficient method for quantum information processing.We propose a dissipative scheme to prepare maximally entangled steady states in cavity QED setup, consisting of two two-level atoms interacting with the two counter-propagating whispering-gallery modes (WGMs) of a microtoroidal resonator. Using spontaneous emission and cavity decay as the dissipative quantum dynamical source, we show that the steady state of this system can be steered into a two-atom single state as well as into a two-mode single state. We probed the compound system with weak field coupled to the system via a tapered fiber waveguide, finding it is possible to determine whether the two atoms or two modes are driven to a maximally entangled state. Through the transmission and reflection measurements, without disturbing the atomic state, when the cavity modes are being driven, or without disturbing the cavity field state, when a single atom being driven, one can get the information about the maximal entanglement. We also investigated for both subsystem, two-atom and two-mode states, the entanglement generation and under what conditions one can transfer entanglement from one subsystem to the other. Our scheme can be selectively used to prepare both maximally entangled atomic state as well as maximally entangled cavity-modes state, providing an efficient method for quantum information processing.

Quantum ReportsJul 8, 20195 citations

Generation of Two-Atom Maximal Entanglement and Quantum Information Transfer via Microtoroidal Cavity-Atom System

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