Xiaolin Zhong, Gongwei Lin, Fengxue Zhou, Yueping Niu, Shangqing Gong. Two-atom distributed entanglement by detecting the transmission spectrum of a coupled-cavity quantum electrodynamics system[J]. Chinese Optics Letters, 2015, 13(9): 092701
- Chinese Optics Letters
- Vol. 13, Issue 9, 092701 (2015)
Fig. 1. (a) Generation of atomic entanglement in separated cavities coupled by a short optical fiber. Two-atom entanglement can be realized in a heralded way by detecting the transmission spectrum; (b) concrete atomic level structure and relevant transition.
![Transmission spectrum T as a function of the scanning frequency δ=ω−ωa. Spectral line A corresponds to the state |ψ〉A=|s1,s2〉, spectral line B corresponds to the state |ψ〉B=1/2(|g1,s2〉+|s1,g2〉), spectral line C corresponds to the state |ψ〉C=|g1,g2〉, and δω is the minimal shift of three spectral lines. Parameters are κ=γ, g=4κ[36], J=100 g[8], and Δ=15 g.](/richHtml/col/2015/13/9/092701/img_002.jpg)
Fig. 2. Transmission spectrum T δ = ω − ω a A | ψ 〉 A = | s 1 , s 2 〉 B | ψ 〉 B = 1 / 2 ( | g 1 , s 2 〉 + | s 1 , g 2 〉 ) C | ψ 〉 C = | g 1 , g 2 〉 δ ω κ = γ g = 4 κ J = 100 g Δ = 15 g
![Probability P of the atomic qubit loss as a function of the time t. Parameters are (g,κ,γ)/(2π)=(16,4.2,2.6) MHz[36], Ω/2π=4 MHz, J=100 g[8], and Δ=15 g.](/Images/icon/loading.gif){kind=icon}
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