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Reactive dopant atoms embedded in inert host metal surfaces define the active sites in single-atom alloys (SAAs), yet SAA synthesis remains challenging. To address this, we elucidate how dopant adatoms deposited on Cu and Ag surfaces become…

材料科学 · 物理学 2025-12-01 Ioannis Karageorgiou , Angelos Michaelides , Fabian Berger

Aberration-corrected environmental transmission electron microscopy (ETEM) enables atomic-resolution imaging of dynamic catalytic processes. Correlating atomic-scale structural changes with reaction products detected by mass spectrometry…

While liquid crystals (LCs) have been extensively studied, obtaining a comprehensive nanoscale picture of their molecular organization remains challenging, as conventional techniques face an intrinsic trade-off between spatial and chemical…

The promise of Additive Manufacturing (AM) includes reduced transportation and warehousing costs, reduction of source material waste, and reduced environmental impact. AM is extremely useful for making prototypes and has demonstrated the…

计算机与社会 · 计算机科学 2017-06-05 Gregory Pope , Mark Yampolskiy

Neutral atoms can be trapped and manipulated with surface mounted microscopic current carrying and charged structures. We present a lithographic fabrication process for such atom chips based on evaporated metal films. The size limit of this…

材料科学 · 物理学 2009-11-10 S. Groth , P. Krüger , S. Wildermuth , R. Folman , T. Fernholz , D. Mahalu , I. Bar-Joseph , J. Schmiedmayer

Tackling the task of materials generation, we aim to enhance the previously proposed All-atom Diffusion Transformer (ADiT) by introducing SymADiT, a symmetry-aware variant. To do so, we use a representation of materials based on Wyckoff…

We demonstrate the generation of a cold-atom ensemble within a sub-millimeter diameter hole in a transparent membrane, a so-called "membrane MOT". With a sub-Doppler cooling process, the atoms trapped by the membrane MOT are cooled down to…

量子物理 · 物理学 2021-04-20 Jongmin Lee , Grant Biedermann , John Mudrick , Erica A. Douglas , Yuan-Yu Jau

Collisional gates in optical superlattices have recently achieved record fidelities, but their operation times are typically limited by tunneling. Here we propose and analyze an alternative route to a fast $\sqrt{\mathrm{SWAP}}$ gate for…

量子气体 · 物理学 2025-12-30 Rafi Weill , Jonathan Nemirovsky , Yoav Sagi

The unique property of tantalum (Ta), particularly its long coherent lifetime in superconducting qubits and its exceptional resistance to both acid and alkali, makes it promising for superconducting quantum processors. It is a notable…

Serverless computing has grown in popularity in recent years, with an increasing number of applications being built on Functions-as-a-Service (FaaS) platforms. By default, FaaS platforms support retry-based fault tolerance, but this is…

分布式、并行与集群计算 · 计算机科学 2020-03-16 Vikram Sreekanti , Chenggang Wu , Saurav Chhatrapati , Joseph E. Gonzalez , Joseph M. Hellerstein , Jose M. Faleiro

Atomic-scale engineering typically involves bottom-up approaches, leveraging parameters such as temperature, partial pressures, and chemical affinity to promote spontaneous arrangement of atoms. These parameters are applied globally,…

This document is a joint response by scientists from the Princeton Plasma Physics Laboratory, IBM T. J. Watson Research Center and Applied Materials, Inc. to the DOE Office of Science (DOE-SC) Request for Information: Basic Research…

Transformer uses GPU as the initial design platform, but GPU can only perform limited hardware customization. Although FPGA has strong customization ability, the design solution space is huge and the design difficulty is high. Versal ACAP…

硬件体系结构 · 计算机科学 2024-09-17 Wenbo Zhang , Yiqi Liu , Zhenshan Bao

The uniformity of the intensity and phase of laser beams is crucial to high-performance atom interferometers. Inhomogeneities in the laser intensity profile cause contrast reductions and systematic effects in interferometers operated with…

原子物理 · 物理学 2018-11-09 N. Mielec , M. Altorio , R. Sapam , D. Horville , D. Holleville , L. A. Sidorenkov , A. Landragin , R. Geiger

Realizing a quantum transistor built of molecules or quantum dots has been one of the most ambitious challenges in nanotechnology. Even though remarkable progress has been made, being able to gate and control nanometer scale objects, as…

介观与纳米尺度物理 · 物理学 2012-11-06 Carlos A. Busser , Adrian E. Feiguin

Volumetric crystal structure indexing and orientation mapping are key data processing steps for virtually any quantitative study of spatial correlations between the local chemistry and the microstructure of a material. For electron and…

计算物理 · 物理学 2020-09-03 Markus Kühbach , Matthew Kasemer , Baptiste Gault , Andrew Breen

The rapid updates in error-resilient applications along with their quest for high throughput have motivated designing fast approximate functional units for Field-Programmable Gate Arrays (FPGAs). Studies that proposed imprecise functional…

硬件体系结构 · 计算机科学 2022-06-29 Zahra Ebrahimi , Muhammad Zaid , Mark Wijtvliet , Akash Kumar

The extreme miniaturization of a cold-atom interferometer accelerometer requires the development of novel technologies and architectures for the interferometer subsystems. Here we describe several component technologies and a laser system…

To enhance the ionization yield of liquid argon time projection chambers (LArTPC) used in dark matter and neutrino experiments it was proposed the use of dopants in LAr, with ionization energies below the scintillation threshold of Ar.…

仪器与探测器 · 物理学 2024-11-14 L. M. Ramos , A. F. V. Cortez , M. Kuźniak , A. Gnat , M. Kuźwa , G. Nieradka , T. Sworobowicz , S. Westerdale

We present a simple scheme for implementing an atomic phase gate using two degrees of freedom for each atom and discuss its realization with cold rubidium atoms on atom chips. We investigate the performance of this collisional phase gate…

量子物理 · 物理学 2009-11-11 M. A. Cirone , A. Negretti , T. Calarco , P. Krueger , J. Schmiedmayer