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arXiv 2402.04415quant-ph
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来自对称测量的非马尔可夫量子动力学

Non-Markovian quantum dynamics from symmetric measurements

Katarzyna Siudzińska

AI总结:

本研究利用对称测量算子构建推广的广义Pauli量子信道,分析其双随机、完全正定等性质,推导开放量子系统动力学的马尔可夫性条件,给出可产生更多负退相干率的P-可分映射生成元。

摘要:

我们利用对称测量算子构建量子信道,该信道是对广义Pauli信道的进一步推广。所得映射是双随机的,但通常不再是混合幺正的。我们分析了其完全正定性、打破量子纠缠的能力等重要性质。在主体部分,我们研究了具有时间局域生成元的对应开放量子系统动力学,从动力学映射的可分性出发,推导了充分的马尔可夫性与非马尔可夫性条件。作为示例,我们给出了P-可分广义Pauli动力学映射的生成元,其可在退相干率中呈现更多负值。

英文摘要:

We use symmetric measurement operators to construct quantum channels that provide a further generalization of generalized Pauli channels. The resulting maps are bistochastic but in general no longer mixed unitary. We analyze their important properties, such as complete positivity and the ability to break quantum entanglement. In the main part, we consider the corresponding open quantum systems dynamics with time-local generators. From divisibility properties of dynamical maps, we derive sufficient Markovianity and non-Markovianity conditions. As instructive examples, we present the generators of P-divisible generalized Pauli dynamical maps that allow for more negativity in the decoherence rates.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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