在2D GdIII NaI 中旋转Qubit - 基于Oxamato超分子协调框架
Jia Wang1, Yu Jing1, Ming-Hui Cui1
1State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, 210023, Nanjing, P. R. China.
Chemistry (Weinheim an der Bergstrasse, Germany)
|September 4, 2023
概括
量子计算需要很长的量子比特脱时间. 研究人员为量子比特探索了一种基于加多的材料 (GdIII NaI),发现其结构和特性支持扩展连贯性,这对于量子信息处理至关重要.
科学领域:
- 量子信息科学 量子信息科学
- 材料化学 材料化学
- 固态物理 固态物理
背景情况:
- 量子比特是量子计算的基础,需要长时间的脱时间才能进行可靠的操作.
- 目前对基于分子的电子自旋量子比特的研究通常集中在S=1/2系统上,将网关构建限制在单位操作上.
- 量子计算需要多层系统 (S>1/2) 进行复杂的交互和多位门.
研究的目的:
- 为了研究一个新的2Doxamato超分子协调框架,其中包含Gd(III) 离子作为潜在的量子比特载体.
- 评估合成材料的磁性特性和放松动态,用于量子应用.
- 了解导致这个系统中脱节时间的因素.
主要方法:
- 基于2D氧气协调的Gd(III) Na(I) 基氧胺超分子协调框架的合成和表征:Na[Gd(4-HOpa) 4(H2O) ]·2H2O.
- 对磁感应度的测量,以研究磁场诱导的缓慢磁放松,并确定声子瓶 (PB) 效应.
- 脉冲电子磁共振 (EPR) 光谱测定旋转 (T1) 和旋转旋转 (Tm) 放松时间.
主要成果:
- 合成的基于Gd(III) 的材料表现出磁场诱导的缓慢磁放松,表明在低温下存在声子瓶 (PB) 效应.
- 该系统显示了非常弱的磁性异构性,这有助于其作为量子比特的潜力.
- 对二磁稀释样本 (1Gd0.12%) 的脉冲EPR研究显示,在4K时的旋转放松时间 (T1) 为1.66ms,在8K时的旋转-旋转放松时间 (Tm) 为4.25μs.
结论:
- 研究的Gd(III) 超分子框架由于其近同位素性质和声子瓶效应,为量子位应用展示了有前途的特性.
- 观察到的长期脱凝时间归因于材料的结构和磁性特性.
- 电磁稀释进一步提高了量子比特性能,这表明改善量子门忠实性的可行途径.
更多相关视频
14:44Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
Published on: December 16, 2013
9.6K
11:04Ion Mobility-Mass Spectrometry Techniques for Determining the Structure and Mechanisms of Metal Ion Recognition and Redox Activity of Metal Binding Oligopeptides
Published on: September 7, 2019
9.2K
相关概念视频
02:42Valence Bond Theory
8.7K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
8.7K
02:57Coordination Number and Geometry
16.0K
For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
16.0K
03:02Colors and Magnetism
11.8K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
11.8K
02:58Crystal Field Theory - Octahedral Complexes
26.7K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
26.7K
02:46Crystal Field Theory - Tetrahedral and Square Planar Complexes
42.9K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
42.9K