膨胀石墨-碳纳米管复合材料的Hong-Ou-Mandel量子效应

L. Karachevtseva, M. Kartel, Y. Sementsov, O. Lytvynenko, O. Sapelnikova
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引用次数: 0

摘要

研究了多壁碳纳米管(CNTs)对热膨胀石墨-碳纳米管(TEG-CNTs)复合材料光谱特性的影响。在TEG复合材料中加入0-3%重量的CNTs,可显著提高复合材料的强度特性和热稳定性。这一结果表明,CNTs是基于TEG组成和结构的复合材料的理想填料。对半宽0.5 cm-1的巨大两极振荡的测量证明了表面极化子与光子的强相互作用。当碳纳米管表面键的局部振荡频率与“纳米管- teg”边界上的模式相匹配时,光吸收增加102 ~ 105倍。因此,在频率为2750 cm-1的TEG中,在0%纳米管的情况下,测量了双极性振荡的红外吸收。它在热膨胀石墨中具有自己的光学模式。在1%碳纳米管的红外吸收光谱中测得5个极性振荡峰。在热膨胀石墨-碳纳米管的边界上,在光学模式频率下,在3%的碳纳米管中测量到8个具有极性振荡的峰。当碳纳米管的局部振荡频率与复合材料的模态相匹配时,光吸收急剧增加(在102 ~ 105倍之间),形成负分量的极性红外吸收振荡。一般来说,双光子干涉是由偶极子主动振荡和光子分裂的量子纠缠引起的,根据Hong-Ou-Mendel (HOM)量子效应。双光子纠缠建立在大多数纠缠态的基础上,也被称为贝尔态。复合材料“膨胀石墨-碳纳米管”上的homo量子效应为高相干光学量子计算机的发展提供了前景。
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Hong-Ou-Mandel quantum effect on “expanded graphite - cnts” composites
We investigated influence of multiwalled carbon nanotubes (CNTs) on spectral characteristics of composites “thermo-expanded graphite – carbon nanotubes (TEG–CNTs)”. The introduction of CNTs in an amount of 0-3% by weight of TEG composites results in a significant increase in the strength characteristics and thermal stability of the composites. This result indicates that CNTs is ideal filler for composites based on TEG compositions and structures. Measurements the giant two-polar oscillations with very small half-width 0.5 cm–1 testify the strong interaction of surface polaritons with photons. When frequencies of local oscillations of surface bonds of carbon nanotubes and modes along “nanotube-TEG” boundaries matches, then the light absorption increases 102–105 times. Thus, IR absorption with two-polar oscillations was measured at 0% of nanotubes in TEG at frequency of 2750 cm–1. It is own optical mode in the thermally expanded graphite. 5 peaks with two-polar oscillations were measured in the IR absorption spectra at 1% of carbon nanotubes. And 8 peaks with two-polar oscillations were measured at 3 % of carbon nanotubes at optical mode frequencies along the boundaries of thermally expanded graphite - carbon nanotubes. When frequencies of local oscillations of carbon nanotubes and composite’s modes matches, then the light absorption extremely increases (in 102–105 times), and two-polar IR absorption oscillations with negative components are formed. In general, two-photon interference is a result of quantum entanglement of dipole-active oscillations and splitting of photons according to the Hong-Ou-Mendel (HOM) quantum effect. Two-photon entanglement is built on the basis of the most entanglement states, also known as Bell's states. The HOM–quantum effect on composites “expanded graphite-carbon nanotubes” is promising for the development of highly coherent optical quantum computers.
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