Quantum entanglement of two collocated atoms in a one-dimensional waveguide

Abstract

Abstract: In the condition of linear dispersion relation, the quantum entanglement between two atoms placed paratactically in a one-dimensional waveguide is investigated. In order to investigate the entanglement degree between two atoms, the transmission and reflection spectra amplitudes are calculated by using the real-space method, and the single-photon scattering properties and concurrence of the entangled states are discussed. Results show that the scattering spectra of Fano line shapes occur by changing the atomic dipole-dipole interaction. The dipole-dipole interaction may be utilized as a possible tool to lead to spectral Fano resonance. The quantum concurrence can also occur Fano resonance by controlling the atom-waveguide coupling strength, and the maximum quantum entanglement can be inferred by observing Fano resonance.

Key words: quantum optics; quantum entanglement; optical waveguide; photon transmission; Fano resonance

CLC Number:

O431.2

HUANG Jinsong , XU Zhonghui，ZHONG Yangwan. Quantum entanglement of two collocated atoms in a one-dimensional waveguide [J]. J4, 2017, 34(1): 54-61.

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