Articles with "free electrons" as a keyword



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Nonlinear Interactions between Free Electrons and Nanographenes.

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Published in 2020 at "Nano letters"

DOI: 10.1021/acs.nanolett.0c00538

Abstract: Free electrons act as a source of highly confined, spectrally broad optical fields that are widely used to map photonic modes with nanometer/millielectronvolt space/energy resolution through currently available electron energy-loss and cathodoluminescence spectroscopies. These techniques… read more here.

Keywords: energy; nonlinear interactions; electron energy; free electrons ... See more keywords
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Optical gating and streaking of free electrons with sub-optical cycle precision

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Published in 2017 at "Nature Communications"

DOI: 10.1038/ncomms14342

Abstract: The temporal resolution of ultrafast electron diffraction and microscopy experiments is currently limited by the available experimental techniques for the generation and characterization of electron bunches with single femtosecond or attosecond durations. Here, we present… read more here.

Keywords: optical gating; sub optical; optical cycle; gating streaking ... See more keywords
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Shell effects and free-electrons in electromigrated oxidized Cu-nanocontacts

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Published in 2023 at "Nanotechnology"

DOI: 10.1088/1361-6528/acb654

Abstract: Electromigration in interconnects continues to be an important field of study in integrated circuits as the interconnects are planned to shrink in size at comparable pace as the semiconductor functional elements. Through shrinking the interconnects… read more here.

Keywords: shell effects; electromigrated oxidized; free electrons; electrons electromigrated ... See more keywords
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Anomalous two-photon Compton scattering

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Published in 2021 at "New Journal of Physics"

DOI: 10.1088/1367-2630/ac3553

Abstract: X-ray free-electron lasers can generate radiation pulses with extreme peak intensities at short wavelengths. This enables the investigation of laser–matter interactions in a regime of high fields, yet at a non-relativistic ponderomotive potential, where ordinary… read more here.

Keywords: free electrons; shift; two photon; photon compton ... See more keywords
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Nonideal effect of free electrons on ionization equilibrium and radiative property in dense plasmas.

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Published in 2023 at "Physical review. E"

DOI: 10.1103/physreve.107.l033201

Abstract: The thermodynamic as well as optical properties of strongly coupled plasmas depend crucially on the average degree of ionization and the ionic state composition, which, however, cannot be determined by using the normal Saha equation usually… read more here.

Keywords: ionization; free electron; free electrons; ionization equilibrium ... See more keywords
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Spin-Polarizing Interferometric Beam Splitter for Free Electrons.

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Published in 2017 at "Physical review letters"

DOI: 10.1103/physrevlett.118.070403

Abstract: A spin-polarizing electron beam splitter is described that relies on an arrangement of linearly polarized laser waves of nonrelativistic intensity. An incident electron beam is first coherently scattered off a bichromatic laser field, splitting the… read more here.

Keywords: laser; beam splitter; spin polarizing; free electrons ... See more keywords
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Complete Excitation of Discrete Quantum Systems by Single Free Electrons.

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Published in 2022 at "Physical review letters"

DOI: 10.1103/physrevlett.129.093401

Abstract: We reveal a wealth of nonlinear and recoil effects in the interaction between individual low-energy electrons (≲100  eV) and samples comprising a discrete number of states. Adopting a quantum theoretical description of combined free-electron and two-level… read more here.

Keywords: excitation; free electrons; discrete quantum; complete excitation ... See more keywords
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Shaping quantum photonic states using free electrons

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Published in 2021 at "Science Advances"

DOI: 10.1126/sciadv.abe4270

Abstract: The interactions of free electrons with optical cavities enable the creation of novel quantum photonic states. It is a long-standing goal to create light with unique quantum properties such as squeezing and entanglement. We propose… read more here.

Keywords: quantum; quantum photonic; using free; free electrons ... See more keywords
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Quantum sensing of strongly coupled light-matter systems using free electrons

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Published in 2023 at "Science Advances"

DOI: 10.1126/sciadv.add2349

Abstract: Strong coupling in light-matter systems is a central concept in cavity quantum electrodynamics and is essential for many quantum technologies. Especially in the optical range, full control of highly connected multi-qubit systems necessitates quantum coherent… read more here.

Keywords: light matter; matter systems; quantum; free electrons ... See more keywords
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Jaynes-Cummings interaction between low-energy free electrons and cavity photons.

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Published in 2023 at "Science advances"

DOI: 10.1126/sciadv.adh2425

Abstract: The Jaynes-Cummings Hamiltonian is at the core of cavity quantum electrodynamics; however, it relies on bound-electron emitters fundamentally limited by the binding Coulomb potential. In this work, we propose theoretically a new approach to realizing… read more here.

Keywords: cavity; low energy; energy free; free electrons ... See more keywords