多肽作为量子计算的多功能支架
Peptides as versatile scaffolds for quantum computing
摘要：
在这项工作中，我们展示了肽作为量子计算和分子自旋电子学的多功能支架的潜力。特别是，我们专注于镧系元素结合标签，这最初是在生物技术领域开发的蛋白质结构和动力学的研究。首先，我们证明了Neoprotein肽量子比特中的量子相干振荡。然后，采用细菌生物合成，我们研究了在同一分子系统中增加量子比特数量的可能性，案例研究是具有两个不同协调环境的双自旋量子比特，以及具有约2 nm自旋-自旋分离的9个自旋量子比特的不对称链，并且在任意选择的协调环境序列中。最后，我们利用生物化学修饰的方法在Au（111）表面制备了顺磁性、手性的自组装单分子层，实验和理论分析表明，这是一种很有前景的自旋电子学应用结构，特别是对两种最先进的分子自旋量子比特的改进。最后，我们概述了这一新兴领域带来的挑战和新机遇。
英文摘要：
In this work we showcase the potential of peptides as versatile scaffolds for quantum computing and molecular spintronics. In particular, we focus on lanthanide-binding tags, which were originally developed in the field of biotechnology for the study of protein structure and dynamics. Firstly, we demonstrate quantum coherent oscillations in a Neodymium peptidic qubit. Then, employing bacterial biosynthesis, we investigate the possibility of increasing the number of qubits in the same molecular system, with the case studies being a double spin qubit with two distinct coordination environments, and an asymmetric chain of 9 spin qubits with a spin-spin separation of about 2 nm and in an arbitrarily chosen sequence of coordination environments. Finally, we take advantage of biochemical modification for the preparation of paramagnetic, chiral, Self-Assembled Monolayers (SAMs) on Au(111).Our experimental and theoretical characterization shows that this is a promising structure for spintronic applications, and in particular to improve on two state-of-the-art approaches to molecular spin qubits. We conclude with an overview of the challenges and new opportunities opened by this emerging field.
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