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GENERATION AND ROBUSTNESS OF QUANTUM MEMORY-ASSISTED ENTROPIC UNCERTAINTY AND UNCERTAINTY-INDUCED NONLOCALITY OF TWO NITROGEN-VACANCY CENTERS COUPLED BY OPEN TWO NANOCAVITIES
Fractals ( IF 3.3 ) Pub Date : 2022-08-25 , DOI: 10.1142/s0218348x22401855
ABDEL-HALEEM ABDEL-ATY 1, 2 , ABDEL-BASET A. MOHAMED 3, 4 , ATTA UR RAHMAN 5 , HICHEM ELEUCH 6, 7, 8
Affiliation  

In this paper, we investigate the dynamics of quantum memory-assisted entropic uncertainty, uncertainty-induced nonlocality and log-negativity entanglement of two nitrogen-vacancy centers (NVC). In particular, we are interested in analyzing two nitrogen-vacancy centered qubits coupled with two coherent nanocavities. We consider two different configurations of NVC qubits: when the qubits are prepared initially in separable and maximally entangled states. We demonstrate that coherent nanocavities can be successfully used to generate nonlocality and entanglement in the two NVC qubits while suppressing the associated entropic uncertainty. When the system is considered initially in separable two-NVC qubits, we show that the coupled coherent nanocavities successfully generate nonlocality and entanglement while avoiding the associated entropic uncertainty. The parameter’s adjustment determines the degree of entanglement, non-locality generation, and preservation. In comparison, we find entanglement more vulnerable to the decoherence and entropic uncertainty action between the two NVC qubits and nanocavities than the uncertainty-induced nonlocality. Furthermore, the NVC-qubits coupled with two coherent nanocavities promote entanglement’s sudden birth and death phenomena. This study contributes to the quantum mechanical protocols requiring the robust practical generation of entanglement and nonlocality as well as the related information preservation for the increased efficiency of quantum devices.



中文翻译:

由开放的两个纳米腔耦合的两个氮空位中心的量子记忆辅助熵不确定性和不确定性诱导的非定域性的产生和鲁棒性

在本文中,我们研究了两个氮空位中心 (NVC) 的量子记忆辅助熵不确定性、不确定性引起的非定域性和对数负纠缠的动力学。特别是,我们有兴趣分析两个以氮空位为中心的量子比特以及两个相干纳米腔。我们考虑了两种不同的 NVC 量子比特配置:当量子比特最初以可分离和最大纠缠状态准备时。我们证明了相干纳米腔可以成功地用于在两个 NVC 量子比特中产生非定域性和纠缠,同时抑制相关的熵不确定性。当系统最初被认为是可分离的两个 NVC 量子位时,我们表明,耦合的相干纳米腔成功地产生了非定域性和纠缠,同时避免了相关的熵不确定性。参数的调整决定了纠缠度、非局部性的生成和保存。相比之下,我们发现纠缠比不确定性引起的非定域性更容易受到两个 NVC 量子位和纳米腔之间的退相干和熵不确定性作用的影响。此外,与两个相干纳米腔相结合的 NVC 量子比特促进了纠缠的突然出生和死亡现象。这项研究有助于量子力学协议需要强大的实际产生纠缠和非定域性以及相关信息保存以提高量子设备的效率。参数的调整决定了纠缠度、非局部性的生成和保存。相比之下,我们发现纠缠比不确定性引起的非定域性更容易受到两个 NVC 量子位和纳米腔之间的退相干和熵不确定性作用的影响。此外,与两个相干纳米腔相结合的 NVC 量子比特促进了纠缠的突然出生和死亡现象。这项研究有助于量子力学协议需要强大的实际产生纠缠和非定域性以及相关信息保存以提高量子设备的效率。参数的调整决定了纠缠度、非局部性的生成和保存。相比之下,我们发现纠缠比不确定性引起的非定域性更容易受到两个 NVC 量子位和纳米腔之间的退相干和熵不确定性作用的影响。此外,与两个相干纳米腔相结合的 NVC 量子比特促进了纠缠的突然出生和死亡现象。这项研究有助于量子力学协议需要强大的实际产生纠缠和非定域性以及相关信息保存以提高量子设备的效率。我们发现纠缠比不确定性引起的非定域性更容易受到两个 NVC 量子比特和纳米腔之间的退相干和熵不确定性作用的影响。此外,与两个相干纳米腔相结合的 NVC 量子比特促进了纠缠的突然出生和死亡现象。这项研究有助于量子力学协议需要强大的实际产生纠缠和非定域性以及相关信息保存以提高量子设备的效率。我们发现纠缠比不确定性引起的非定域性更容易受到两个 NVC 量子比特和纳米腔之间的退相干和熵不确定性作用的影响。此外,与两个相干纳米腔相结合的 NVC 量子比特促进了纠缠的突然出生和死亡现象。这项研究有助于量子力学协议需要强大的实际产生纠缠和非定域性以及相关信息保存以提高量子设备的效率。

更新日期:2022-08-26
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