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arXiv 1202.3210quant-ph
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Fenna-Matthews-Olson(FMO)色素-蛋白质复合物中的多体纠缠

Multipartite entanglement in the Fenna-Matthews-Olson (FMO) pigment-protein complex

A. Thilagam

摘要:

我们调查的芬娜-马修斯-奥尔森(FMO)的色素-蛋白质复合物的绿硫细菌使用的声子水库的洛伦兹谱密度与典型的参数估计的物种,P. aestuarii。的激子W量子比特状态的纠缠度的演化进行评估,在皮秒的时间范围内,显示在非马尔可夫制度的复苏增加。在N-激子多体态的Meyer-Wallach测度的演化动力学中观察到类似的趋势,结果表明多体纠缠可以持续0.5至1 ps,FMO复合物的Bchls之间。与FMO复合体激子量子比特信道的GHZ和W_A资源态相关的隐形传态和量子信息分裂的量子数表明,量子数的恢复随着退相干环境的非马尔可夫强度的增加而增加。结果表明,量子信息处理任务,包括隐形传态,其次是解码过程,涉及的FMO复合物的W_A状态,可能发挥关键作用,在相干振荡在生理温度下。

英文摘要:

We investigate multipartite states in the Fenna-Matthews-Olson (FMO) pigment-protein complex of the green sulfur bacteria using a Lorentzian spectral density of the phonon reservoir fitted with typical parameter estimates of the species, P. aestuarii. The evolution of the entanglement measure of the excitonic W qubit states is evaluated in the picosecond time range, showing increased revivals in the non-Markovian regime. Similar trends are observed in the evolution dynamics of the Meyer-Wallach measure of the N-exciton multipartite state, with results showing that multipartite entanglement can last from 0.5 to 1 ps, between the Bchls of the FMO complex. The teleportation and quantum information splitting fidelities associated with the GHZ and W_A resource states of the excitonic qubit channels of the FMO complex show that revivals in fidelities increase with the degree of non-Markovian strength of the decoherent environment. Results indicate that quantum information processing tasks involving teleportation followed by the decodification process involving W_A states of the FMO complex, may play a critical role during coherent oscillations at physiological temperatures.

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