aqora

Exploring local quantum Fisher information beyond entanglement of two distant qubits in coupled dissipative cavities via a Waveguide

Applied Mathematics & Information SciencesNov 1, 20230 citations

Quantum Entanglement and Correlations between Two Qubits Induced by a Heat Bath

郑小兰 Zheng Xiaolan, 张斌 Zhang Bin

Acta Optica SinicaJan 1, 20141 citation

Bell-inequality and skew-information non-localities in two lossy cavity-qubit systems linked by a waveguide

A.‐B. A. Mohamed, Ibtisam A. H. Masmali, A.‐S. F. Obada

We explore two open cavity-qubit systems linked via an optical fiber. The generation of non-local correlations (NLCs) between the two qubits, via skew-information and Bell-function, are investigated under the effects of the physical parameters of the initial state and the interaction couplings of the cavity-qubit and the cavity-fiber and the environment. It is found that the robustness and the generation of the NLCs depend on the physical parameters. Under the condition that the cavity-qubit couplings is much smaller than the cavity-fiber coupling, the regularity of the growth and the oscillations of the NLCs are enhanced and are more robust.We explore two open cavity-qubit systems linked via an optical fiber. The generation of non-local correlations (NLCs) between the two qubits, via skew-information and Bell-function, are investigated under the effects of the physical parameters of the initial state and the interaction couplings of the cavity-qubit and the cavity-fiber and the environment. It is found that the robustness and the generation of the NLCs depend on the physical parameters. Under the condition that the cavity-qubit couplings is much smaller than the cavity-fiber coupling, the regularity of the growth and the oscillations of the NLCs are enhanced and are more robust.

Alexandria Engineering JournalJun 26, 20201 citation

Continuous Variable Entanglement in Lossy Coupled Resonator Optical Waveguides

Hossein Seifoory, Marc M. Dignam

We analytically evaluate the time-dependant cross-correlation between the photons in different cavities in a lossy, coupled resonator optical waveguide to evaluate the evolution of quantum entanglement in the presence of loss.

OSA Advanced Photonics CongressJan 1, 20180 citations

Quantum entanglement in a two-cavity QED system mediated by a waveguide

J Alejandro Andrade

Chinese Journal of PhysicsNov 21, 20252 citations

Squeezed-state evolution and entanglement in lossy coupled-resonator optical waveguides

Hossein Seifoory, Marc M. Dignam

We investigate theoretically the temporal evolution of a squeezed state in lossy coupled-cavity systems. We present a general formalism based upon the tight-binding approximation and apply this to a two-cavity system as well as to a coupled-resonator optical waveguide in a photonic crystal. We derive analytical expressions for the number of photons and the quadrature noise in each cavity as a function of time when the initial excited state is a squeezed state in one of the cavities. We also analytically evaluate the time-dependent cross correlation between the photons in different cavities to evaluate the degree of quantum entanglement. We demonstrate that loss in such coupled-cavity systems cannot be treated using simple exponential factors. Finally, we also derive approximate analytic expressions for the maximum photon number, maximum squeezing, and maximum entanglement for cavities far from the initially excited cavity in a lossless coupled-resonator optical waveguide.We investigate theoretically the temporal evolution of a squeezed state in lossy coupled-cavity systems. We present a general formalism based upon the tight-binding approximation and apply this to a two-cavity system as well as to a coupled-resonator optical waveguide in a photonic crystal. We derive analytical expressions for the number of photons and the quadrature noise in each cavity as a function of time when the initial excited state is a squeezed state in one of the cavities. We also analytically evaluate the time-dependent cross correlation between the photons in different cavities to evaluate the degree of quantum entanglement. We demonstrate that loss in such coupled-cavity systems cannot be treated using simple exponential factors. Finally, we also derive approximate analytic expressions for the maximum photon number, maximum squeezing, and maximum entanglement for cavities far from the initially excited cavity in a lossless coupled-resonator optical waveguide.

arXiv:1710.08519Physical Review AFeb 26, 20189 citations

Quantum correlations of two qubits beyond entanglement in two lossy cavities linked by a waveguide

Related papers

Quantum correlations of two qubits beyond entanglement in two lossy cavities linked by a waveguide

Related papers