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2024-03-05
09:20
OpenAccess [FZJ-2024-01806] Preprint
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The SpinBus Architecture: Scaling Spin Qubits with Electron Shuttling
arXiv () [10.48550/ARXIV.2306.16348]
Quantum processor architectures must enable scaling to large qubit numbers while providing two-dimensional qubit connectivity and exquisite operation fidelities. For microwave-controlled semiconductor spin qubits, dense arrays have made considerable progress, but are still limited in size by wiring fan-out and exhibit significant crosstalk between qubits. [...]
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2024-03-05
09:19
OpenAccess [FZJ-2024-01805] Preprint
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Spin-EPR-pair separation by conveyor-mode single electron shuttling in Si/SiGe
arXiv () [10.48550/ARXIV.2307.04897]
Long-ranged coherent qubit coupling is a missing function block for scaling up spin qubit based quantum computing solutions. Spin-coherent conveyor-mode electron-shuttling could enable spin quantum-chips with scalable and sparse qubit-architecture. [...]
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2024-02-29
12:04
[FZJ-2024-01777] Preprint
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Analyzing Regional Organization of the Human Hippocampus in 3D-PLI Using Contrastive Learning and Geometric Unfolding
arXiv () [10.48550/ARXIV.2402.17744]
Understanding the cortical organization of the human brain requires interpretable descriptors for distinct structural and functional imaging data. 3D polarized light imaging (3D-PLI) is an imaging modality for visualizing fiber architecture in postmortem brains with high resolution that also captures the presence of cell bodies, for example, to identify hippocampal subfields. [...]

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2024-02-20
10:41
OpenAccess [FZJ-2024-01704] Preprint
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Self-Supervised Representation Learning for Nerve Fiber Distribution Patterns in 3D-PLI
arXiv () [10.48550/ARXIV.2401.17207]
A comprehensive understanding of the organizational principles in the human brain requires, among other factors, well-quantifiable descriptors of nerve fiber architecture. Three-dimensional polarized light imaging (3D-PLI) is a microscopic imaging technique that enables insights into the fine-grained organization of myelinated nerve fibers with high resolution. [...]
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2024-02-15
12:59
OpenAccess [FZJ-2024-01625] Preprint
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Mapping of valley-splitting by conveyor-mode spin-coherent electron shuttling
arXiv () [10.48550/ARXIV.2312.17694]
In Si/SiGe heterostructures, the low-lying excited valley state seriously limit operability and scalability of electron spin qubits. For characterizing and understanding the local variations in valley splitting, fast probing methods with high spatial and energy resolution are lacking. [...]
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2024-02-15
12:57
OpenAccess [FZJ-2024-01624] Preprint
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Si/SiGe QuBus for single electron information-processing devices with memory and micron-scale connectivity function
arXiv () [10.48550/ARXIV.2306.16375]
The connectivity within single carrier information-processing devices requires transport and storage of single charge quanta. Our all-electrical Si/SiGe shuttle device, called quantum bus (QuBus), spans a length of 10 $\mathrmμ$m and is operated by only six simply-tunable voltage pulses. [...]
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2024-02-15
12:56
OpenAccess [FZJ-2024-01623] Preprint
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Quantum cellular automata for quantum error correction and density classification
arXiv () [10.48550/ARXIV.2309.03608]
Quantum cellular automata are alternative quantum-computing paradigms to quantum Turing machines and quantum circuits. Their working mechanisms are inherently automated, therefore measurement free, and they act in a translation invariant manner on all cells/qudits of a register, generating a global rule that updates cell states locally, i.e., based solely on the states of their neighbors. [...]
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2024-02-08
14:20
OpenAccess [FZJ-2024-01541] Preprint
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Incorporating feminist practices into (psychological) science - the why, the what and the how
Feminism is about challenging power in all its forms. Applying a feminist lens to scientific research brings many advantages, such as broadening theoretical perspectives, encouraging collaboration with—and inclusion of—marginalized groups, and widening the scope of research methods. [...]
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2024-02-07
11:31
OpenAccess [FZJ-2024-01521] Preprint
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Teaching research data management with DataLad: a multi-year, multi-domain effort
Research data management has become an indispensable skill in modern neuroscience. Researchers can benefit from following good practices as well as from having proficiency in using particular software solutions. [...]
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2024-02-06
07:13

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