温度高达 1400 K 的量子相干控制

IF 9.6 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Nano Letters Pub Date : 2024-11-11 DOI:10.1021/acs.nanolett.4c04359
Jing-Wei Fan, Shuai-Wei Guo, Chao Lin, Ning Wang, Gang-Qin Liu, Quan Li, Ren-Bao Liu
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引用次数: 0

摘要

高温下的相干量子控制对于拓展量子世界非常重要,也有助于将量子技术应用到现实环境中。金刚石中自旋的量子控制已在接近 1000 K 的温度下得到证实,自旋在室温下被极化和读出,并在高温下通过快速加热和冷却得到控制。与加热和冷却速度相比,由于自旋弛豫速度快,进一步提高工作温度具有挑战性。在这里,我们通过使用还原氧化石墨烯作为激光吸收体和散热器,大大提高了加热和冷却速度,从而实现了高达 1400 K 的相干量子运行,这比所有已知材料的居里温度都要高。这项工作有助于利用金刚石传感器研究高温环境下的各种磁效应,如热永磁和磁形状记忆效应。
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Quantum Coherence Control at Temperatures up to 1400 K
Coherent quantum control at high temperatures is important for expanding the quantum world and is useful for applying quantum technologies to realistic environments. Quantum control of spins in diamond has been demonstrated near 1000 K, with the spins polarized and read out at room temperature and controlled at elevated temperatures by rapid heating and cooling. Further increase of the working temperature is challenging due to fast spin relaxation in comparison with the heating and cooling rates. Here we significantly improve the heating and cooling rates by using reduced graphene oxide as the laser absorber and heat drain and hence realize coherent quantum operation at up to 1400 K, which is higher than the Curie temperatures of all known materials. This work facilitates the use of diamond sensors to study a wide range of magnetic effects in the high-temperature regime, such as thermoremanent magnetism and magnetic shape memory effects.
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来源期刊
Nano Letters
Nano Letters 工程技术-材料科学:综合
CiteScore
16.80
自引率
2.80%
发文量
1182
审稿时长
1.4 months
期刊介绍: Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.
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