2020 – Page 22 – Kavli Institute Pre-Print Publications

Low Energy Spread Attosecond Bunching and Coherent Electron Acceleration in Dielectric Nanostructures

Posted by klaurent August 5, 2020Stanford

Kavli Affiliate: Robert Byer | Summary:We demonstrate a compact technique to compress electron pulses to attosecond length, while keeping the energy spread reasonably small. The technique is based on Dielectric Laser Acceleration (DLA) in nanophotonic silicon structures. Unlike previous ballistic optical microbunching demonstrations, we use a modulator-demodulator scheme to compress phase space in the time […]

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Low Energy Spread Attosecond Bunching and Coherent Electron Acceleration in Dielectric Nanostructures

Posted by klaurent August 5, 2020Stanford

Kavli Affiliate: Robert L. Byer | First 5 Authors: Uwe Niedermayer, Dylan S. Black, Kenneth J. Leedle, Yu Miao, Robert L. Byer | Summary: We demonstrate a compact technique to compress electron pulses to attosecond length, while keeping the energy spread reasonably small. The technique is based on Dielectric Laser Acceleration (DLA) in nanophotonic silicon […]

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Enhanced bivariant homology theory attached to six functor formalism

Posted by klaurent August 5, 2020Tokyo

Kavli Affiliate: Tomoyuki Abe | Summary:Bivariant theory is a unified framework for cohomology and Borel-Moore homology theories. In this paper, we extract an $infty$-enhanced bivariant homology theory from Gaitsgory-Rozenblyum’s six functor formalism. | Search Query: arXiv Query: search_query=au:”Abe Tomoyuki”&id_list=&start=0&max_results=10Read More

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Conductance asymmetries in mesoscopic superconducting devices due to finite bias

Posted by klaurent August 4, 2020Delft

Kavli Affiliate: Michael Wimmer | First 5 Authors: André Melo, Chun-Xiao Liu, Piotr Rożek, Tómas Örn Rosdahl, Michael Wimmer | Summary: Tunneling conductance spectroscopy in normal metal-superconductor junctions is an important tool for probing Andreev bound states in mesoscopic superconducting devices, such as Majorana nanowires. In an ideal superconducting device, the subgap conductance obeys specific […]

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Charging-driven coarsening and melting of a colloidal nanoparticle monolayer at an ionic liquid-vacuum interface

Posted by klaurent August 3, 2020Berkeley

Kavli Affiliate: Naomi S. Ginsberg | First 5 Authors: Connor G. Bischak, Jonathan G. Raybin, Jonathon W. Kruppe, Naomi S. Ginsberg, | Summary: We induce and investigate the coarsening and melting dynamics of an initially static nanoparticle colloidal monolayer at an ionic liquid-vacuum interface, driven by a focused, scanning electron beam. Coarsening occurs through grain […]

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Designing angle-independent structural colors using Monte Carlo simulations of multiple scattering

Posted by klaurent July 29, 2020Harvard

Kavli Affiliate: Joanna Aizenberg | First 5 Authors: Victoria Hwang, Anna B. Stephenson, Solomon Barkley, Soeren Brandt, Ming Xiao | Summary: Disordered nanostructures with correlations on the scale of visible wavelengths can show angle-independent structural colors. These materials could replace dyes in some applications because the color is tunable and resists photobleaching. However, designing nanostructures […]

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Designing angle-independent structural colors using Monte Carlo simulations of multiple scattering

Posted by klaurent July 29, 2020Harvard

Kavli Affiliate: Vinothan N. Manoharan | First 5 Authors: Victoria Hwang, Anna B. Stephenson, Solomon Barkley, Soeren Brandt, Ming Xiao | Summary: Disordered nanostructures with correlations on the scale of visible wavelengths can show angle-independent structural colors. These materials could replace dyes in some applications because the color is tunable and resists photobleaching. However, designing […]

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Amplify-and-Forward Relaying for Hierarchical Over-the-Air Computation

Posted by klaurent July 29, 2020Berkeley

Kavli Affiliate: Feng Wang | First 5 Authors: Feng Wang, Jie Xu, Vincent K. N. Lau, Shuguang Cui, | Summary: This paper studies a hierarchical over-the-air computation (AirComp) network over a large area, in which multiple relays are exploited to facilitate data aggregation from massive WDs. We present a two-phase amplify-and-forward (AF) relaying protocol. In […]

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Covariance of the redshift-space matter power spectrum after reconstruction

Posted by klaurent July 28, 2020Tokyo

Kavli Affiliate: Chiaki Hikage | Summary:We explore the covariance of redshift-space matter power spectra after a standard density-field reconstruction. We derive perturbative formula of the covariance at the tree-level order and find that the amplitude of the off-diagonal components from the trispectrum decreases by reconstruction. Using a large set of N-body simulations, we also find […]

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Merging stellar and intermediate-mass black holes in dense clusters: implications for LIGO, LISA and the next generation of gravitational wave detectors

Posted by klaurent July 27, 2020Peking

Kavli Affiliate: Xian Chen | First 5 Authors: Manuel Arca-Sedda, Pau Amaro-Seoane, Xian Chen, , | Summary: We study the formation of intermediate-mass ratio inspirals (IMRIs) triggered by the interactions between two stellar black holes (BHs) and an intermediate-mass BH (IMBH) inhabiting the centre of a dense star cluster. We exploit $N$-body models varying the […]

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