发表机构
Columbia University; Brookhaven National Laboratory; Seoul National University; Pacific Northwest National Laboratory; Oak Ridge National Laboratory; Florida State University（哥伦比亚大学; 布鲁克海文国家实验室; 首尔国立大学; 太平洋西北国家实验室; 橡树岭国家实验室; 佛罗里达州立大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究提出利用二维材料的范德华限域调控分子自旋量子比特的局域环境，以降低其自旋-晶格弛豫速率，实现分子自旋量子比特的有序组装，为其集成到量子器件提供了新途径。
AI 中文摘要
量子信息技术的进步需要相干性可精准调控的量子比特。在研发中的量子比特平台里，分子自旋量子比特（MSQs）因原子级可调性和化学特异性脱颖而出，成为传感、模拟和信息处理的有力候选。然而，将MSQs集成到固态架构中而不降低其相干性仍是核心挑战。在此，我们提出二维材料内的范德华（vdW）限域作为调控MSQs局域电子、振动和对称环境以稳定其量子态的策略。以二茂钴为模型体系，我们发现范德华SnS₂和CdPS₃单晶内的限域会重组单离子能级结构，使自旋-晶格弛豫速率比未限域的二茂钴降低两个数量级以上。限域后的MSQs呈现确定取向，自组装成有序的原子级精确超晶格，证明范德华限域是将MSQs集成到功能量子器件的可行途径。
英文摘要
Advancing quantum information technologies requires qubits whose coherence can be precisely engineered. Among the qubit platforms in development, molecular spin qubits (MSQs) stand out for their atomic scale tunability and chemical specificity, making them powerful candidates for sensing, simulation, and information processing. However, integrating MSQs into solid-state architectures without degrading their coherence remains a central challenge. Here, we introduce van der Waals (vdW) confinement within two-dimensional materials as a strategy for stabilizing quantum states in MSQs by engineering their local electronic, vibrational, and symmetry environments. Using cobaltocene as a model system, we show that confinement within vdW SnS2 and CdPS3 single crystals reorganizes the single-ion energy landscape and slows spin-lattice relaxation by over two orders of magnitude relative to unconfined cobaltocene. The confined MSQs adopt deterministic orientations and self-assemble into ordered, atomically precise superlattices, establishing vdW confinement as a pathway for integrating MSQs into functional quantum devices.
