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High-dimensional broadband quantum memory significantly expands quantum information processing capabilities, but the memory efficiency becomes insufficient when extended to high dimensions. We demonstrate an efficient quantum memory for…

量子物理 · 物理学 2025-09-03 Zeliang Wu , Jinxian Guo , Zhifei Yu , Wenfeng Huang , Chun-Hua Yuan , Weiping Zhang , L. Q. Chen

Ionization is one of the basic physical processes, occurring when charged particles penetrate atomic matter. When atoms are bombarded by very dense and compact beams of extreme relativistic electrons, two qualitatively new -- and very…

原子物理 · 物理学 2025-10-07 S. Kim , C. Müller , A. B. Voitkiv

We provide a theoretical model for electronic transitions in a two-dimensional (2D) artificial atom in a graphene monolayer. The artificial atom is due to the presence of a charged adatom (Coulomb impurity) in the layer and interacts with a…

介观与纳米尺度物理 · 物理学 2024-12-13 Saparboy Rakhmanov , Reinhold Egger , Doniyor Jumanazarov , Davron Matrasulov

Discovering new superionic materials is essential for advancing solid-state batteries, which offer improved energy density and safety compared to the traditional lithium-ion batteries with liquid electrolytes. Conventional computational…

We show that portions of an image written into a gradient echo memory can be individually retrieved or erased on demand, an important step towards processing a spatially multiplexed quantum signal. Targeted retrieval is achieved by locally…

量子物理 · 物理学 2020-01-30 Jeremy B. Clark , Quentin Glorieux , Paul D. Lett

Reversible and coherent storage of light in atomic medium is a key-stone of future quantum information applications. In this work, arbitrary two-dimensional images are slowed and stored in warm atomic vapor for up to 30 $\mu$s, utilizing…

量子物理 · 物理学 2008-06-17 M. Shuker , O. Firstenberg , R. Pugatch , A. Ron , N. Davidson

Content Addressable Memories (CAMs) are considered a key-enabler for in-memory computing (IMC). IMC shows order of magnitude improvement in energy efficiency and throughput compared to traditional computing techniques. Recently, analog CAMs…

硬件体系结构 · 计算机科学 2022-03-07 Jinane Bazzi , Jana Sweidan , Mohammed E. Fouda , Rouwaida Kanj , Ahmed M. Eltawil

Fluid and ionic transport at nanoscale recently highlighted a wealth of exotic behaviours. However, the artificial nanofluidic devices are still far from the advanced functionalities existing in biological systems, such as electrically and…

介观与纳米尺度物理 · 物理学 2020-11-13 Alice Marcotte , Timothée Mouterde , Antoine Niguès , Alessandro Siria , Lydéric Bocquet

Synaptic plasticity, the dynamic tuning of signal transmission strength between neurons, serves as a fundamental basis for memory and learning in biological organisms. This adaptive nature of synapses is considered one of the key features…

介观与纳米尺度物理 · 物理学 2024-11-11 Yechan Noh , Alex Smolyanitsky

In recent years, machine vision has taken huge leaps and is now becoming an integral part of various intelligent systems, including autonomous vehicles, robotics, and many others. Usually, visual information is captured by a frame-based…

The study of atomically thin two-dimensional materials is a young and rapidly growing field. In the past years, a great advance in the study of the remarkable electrical and optical properties of 2D materials fabricated by exfoliation of…

介观与纳米尺度物理 · 物理学 2015-01-27 Andres Castellanos-Gomez , Vibhor Singh , Herre S. J. van der Zant , Gary A. Steele

Optical neuromorphic computing offers a promising route to high speed, energy efficient information processing. However, photonic neurons, as the critical components for enhancing computational expressivity, still face significant…

光学 · 物理学 2025-08-25 Junyan Chen , Jingsong Fu , Jie Xu , Yixiang Qin , Axin Du , Kaiyang Wang , Limin Jin , Can Huang

Inelastic effects in electron transport through nano-sized devices are addressed with a method based on nonequilibrium Green's functions (NEGF) and perturbation theory to infinite order in the electron-vibration coupling. We discuss the…

介观与纳米尺度物理 · 物理学 2007-05-23 Thomas Frederiksen , Mads Brandbyge , Nicolas Lorente , Antti-Pekka Jauho

Coulomb explosion imaging (CEI) is a powerful technique for capturing the real-time motion of individual atoms during ultrafast photochemical reactions. CEI generates high-dimensional data with naturally embedded correlations that allow…

Recent advances in scanning transmission electron microscopy (STEM) instrumentation have made it possible to focus electron beams with sub-atomic precision and to identify the chemical structure of materials at the level of individual…

材料科学 · 物理学 2017-03-08 T. Susi , J. C. Meyer , J. Kotakoski

Three-terminal electrochemical ionic synapses (EIoS) have recently attracted interest for in-memory computing applications. These devices utilize electrochemical ion intercalation to modulate the ion concentration in the channel material.…

介观与纳米尺度物理 · 物理学 2025-08-01 Michael L. Li , Dingyu Shen , Jesus A. del Alamo , Martin Z. Bazant

Hydroxide ion transport in anion-exchange membranes fundamentally limits the efficiency of alkaline water electrolysis for green hydrogen production, yet the atomic-scale transport mechanisms remain poorly understood due to the…

Emergent learning transforms a disordered optical medium into a photonic device capable of storage, recognition, and classification of arbitrary memory patterns. First, we show that the intensity at the output of a multiply scattering…

Trapped atomic ions enable a precise quantification of the flow of information between internal and external degrees of freedom by employing a non-Markovianity measure [H.-P. Breuer et al., Phys. Rev. Lett. 103, 210401 (2009)]. We reveal…

量子物理 · 物理学 2018-02-14 Matthias Wittemer , Govinda Clos , Heinz-Peter Breuer , Ulrich Warring , Tobias Schaetz

Atomic vibrations control all thermally activated processes in materials including diffusion, heat transport, phase transformations, and surface chemistry. Recent developments in monochromated, aberration-corrected scanning transmission…

材料科学 · 物理学 2020-01-08 Kartik Venkatraman , Barnaby D. A. Levin , Katia March , Peter Rez , Peter A. Crozier