Neutral Radical Molecules Ordered in Self-Assembled Monolayer Systems for Quantum Information Processing

Characteristic parameters and dynamics of two-qubit system in self-assembled monolayers

We suggest the application of nitronylnitroxide substituted with methyl group and 2,2,6,6-tetramethylpiperidin organic radicals as 1/2-spin qubits for self-assembled monolayer quantum devices. We show that the oscillating cantilever driven adiabatic reversals technique can provide the read-out of the spin states. We compute components of the $g$-tensor and dipole-dipole interaction tensor for these radicals. We show that the delocalization of the spin in the radical may significantly influence the dipole-dipole interaction between the spins.

通过有机磷酸酯自组装单分子层表面钝化实现铌超导谐振子的高时间稳定性

High temporal stability of niobium superconducting resonators by surface passivation with organophosphonate self-assembled monolayers

研究通过有机磷酸酯自组装单分子层钝化铌薄膜，抑制氧化物再生，提升超导谐振子在低温下的时间稳定性与品质因子，量化TLS损耗特征为~5×10^-7。

Spatially Resolving Electron Spin Resonance of $π$-Radical in Single-molecule Magnet

The spintronic properties of magnetic molecules have attracted significant scientific attention. Special emphasis has been placed on the qubit for quantum information processing. The single molecule magnet, bis(phthalocyaninato (Pc)) Tb(III) (TbPc2), is one of the best examined cases in which the delocalized π-radical electron spin of the Pc ligand plays the key role in reading and intermediating the localized Tb spin qubits. We utilized the electron spin resonance (ESR) technique implemented on scanning tunneling microscope (STM) and use it to measure local ESR of single TbPc2 molecule decoup…

通过全表面有机单分子层钝化增强钽超导谐振器性能

Enhanced Tantalum Superconducting Resonator Performance via All-Surface Organic Monolayer Passivation

研究通过有机单分子层钝化降低钽谐振器界面损耗，提升相干时间，实现单光子能级下质量因子提升140%。

Scale-up of room-temperature constructive quantum interference from single molecules to self-assembled molecular-electronic films

The realization of self-assembled molecular-electronic films, whose room-temperature transport properties are controlled by quantum interference (QI), is an essential step in the scale-up QI effects from single molecules to parallel arrays of molecules. Recently, the effect of destructive QI (DQI) on the electrical conductance of self-assembled monolayers (SAMs) has been investigated. Here, through a combined experimental and theoretical investigation, we demonstrate chemical control of different forms of constructive QI (CQI) in cross-plane transport through SAMs and assess its influence on c…

通过自组装生物分子薄膜有效减小 Casimir 力

Efficient Reduction of Casimir Forces by Self-assembled Bio-molecular Thin Films

本研究实验发现自组装生物分子薄膜可将平板与球体间的 Casimir 力减小达14%，并通过 Lifshitz 理论验证其机制，为解决 MEMS 微型化中的粘附问题提供了新途径。