1. 26 Mar 2025 Journal Article The European Physical Journal D

    Muonium fine structure: theory update, tests of Lorentz violation, and experimental prospects

    Philipp Blumer, Svenja Geissmann, Arnaldo J Vargas, Gianluca Janka, Ben Ohayon, Paolo Crivelli
    Abstract

    We review the status of the QED calculations for the muonium \(2S_{1/2}-2P_{3/2}\) energy interval and provide the updated theoretical value of 9874.357(1)\({\,{\textrm{MHz}}\,}\). Additionally, we present a model for probing Lorentz-violating coefficients within the Standard Model Extension framework using the fine structure measurement in the presence and absence of

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  2. 21 Mar 2025 Preprint arXiv

    On the Importance of Error Mitigation for Quantum Computation

    Dorit Aharonov, Ori Alberton, Itai Arad, Yosi Atia, Eyal Bairey, Zvika Brakerski, Itsik Cohen, Omri Golan, Ilya Gurwich, Oded Kenneth, Eyal Leviatan, Netanel H Lindner, Ron Aharon Melcer, Adiel Reuvan Meyer Berman, Gili Schul, Maor Shutman
    Abstract

    Quantum error mitigation (EM) is a family of hybrid quantum-classical methods for eliminating or reducing the effect of noise and decoherence on quantum algorithms run on quantum hardware, without applying quantum error correction (EC). While EM has many benefits compared to EC, specifically that it requires no (or little) qubit overhead, this benefit comes with a

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  3. 20 Mar 2025 Journal Article Optica

    Toward high-gain laser-driven electron undulators

    Amnon Balanov, Ron Ruimy, Ido Kaminer
    Abstract

    Free-electron laser (FEL) is a powerful tool that provides high-brightness radiation across a wide range of frequencies up to the x-ray spectrum. However, the large size and high cost of FEL facilities have limited their accessibility and widespread adoption. To address this challenge, researchers have explored the possibility of replicating FEL physics using lasers

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  4. 18 Mar 2025 Preprint arXiv

    Roadmap for Quantum Nanophotonics with Free Electrons

    F Javier García de Abajo, Albert Polman, Cruz I Velasco, Mathieu Kociak, Luiz H G Tizei, Odile Stéphan, Sophie Meuret, Takumi Sannomiya, Keiichirou Akiba, Yves Auad, Armin Feist, Claus Ropers, Peter Baum, John H Gaida, Murat Sivis, Hugo Lourenço-Martins, Luca Serafini, Johan Verbeeck, Beatrice Matilde Ferrari, Cameron James Richard Duncan, Maria Giulia Bravi, Irene Ostroman, Giovanni Maria Vanacore, Andrea Konečná, Nahid Talebi, Ethan Nussinson, Ron Ruimy, Yuval Adiv, Arthur Niedermayr, Ido Kaminer, ... show all 47 authors
    Abstract

    Over the past century, continuous advancements in electron microscopy have enabled the synthesis, control, and characterization of high-quality free-electron beams. These probes carry an evanescent electromagnetic field that can drive localized excitations and provide high-resolution information on material structures and their optical responses, currently reaching the

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  5. 17 Mar 2025 Journal Article Physical Review B

    Magneto-optics of a charge-tunable quantum dot: Observation of a negative diamagnetic shift

    Giora Peniakov, Ayal Beck, Eilon Poem, Zu-En Su, Boaz Taitler, S Höfling, G W Bryant, David Gershoni
    Abstract

    We present magneto-optical studies of a self-assembled semiconductor quantum dot in neutral and positively charged states. The diamagnetic shifts and Zeeman splitting of many well-identified optical transitions are precisely measured. Remarkably, a pronounced negative diamagnetic shift is observed for spectral lines resulting from a doubly positively charged excitonic

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  6. 16 Mar 2025 Preprint arXiv

    Robust strong-field theory model for ultrafast electron transport through metal-insulator-metal tunneling nanojunctions

    Boyang Ma, Michael Krüger
    Abstract

    Ultrafast science studies the dynamics of electrons in matter with extreme temporal precision, typically in the attosecond and femtosecond time domain. Recent experimental and theoretical progress has put metal-insulator-metal (MIM) tunneling nanojunctions in the spotlight of ultrafast science. Waveform-controlled laser fields can induce ultrafast currents in these

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  7. 15 Mar 2025 Preprint arXiv

    Tunable N-level EIT: Deterministic Generation of Optical States with Negative Wigner Function

    Abstract

    Strong optical nonlinearities are key to a range of technologies, particularly in the generation of photonic quantum states. The strongest nonlinearity in hot atomic vapors originates from electromagnetically induced transparency (EIT), which, while effective, often lacks tunability and suffers from significant losses due to atomic absorption. We propose and demonstrate

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  8. 13 Mar 2025 Journal Article Npj Quantum Materials

    Topological excitations at time vortices in periodically driven systems

    Gilad Kishony, Ori Grossman, Netanel H Lindner, Mark S Rudner, Erez Berg
    Abstract

    We consider two-dimensional periodically driven systems of fermions with particle-hole symmetry. Such systems support non-trivial topological phases, including ones that cannot be realized in equilibrium. We show that a space-time defect in the driving Hamiltonian, dubbed a “time vortex,” can bind π Majorana modes. A time vortex is a point in space around which the

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  9. 7 Mar 2025 Journal Article Journal of High Energy Physics

    New physics at the Muon (Synchrotron) Ion Collider: MuSIC for several scales

    Yotam Soreq
    Hooman Davoudiasl, Hongkai Liu, Roman Marcarelli, Yotam Soreq, Sokratis Trifinopoulos
    Abstract

    A Muon (Synchrotron) Ion Collider (MuSIC) can be the successor to the Electron-Ion Collider at Brookhaven National Laboratory, as well as the ideal demonstrator facility for a future multi-TeV Muon Collider. Besides its rich nuclear physics and Standard Model particle physics programs, in this work we show that the MuSIC with a TeV-scale muon beam offers also a unique

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  10. 6 Mar 2025 Preprint arXiv

    Nonlinear Nanophotonics for High-Dimensional Quantum States

    Liat Nemirovsky Levy, Amit Kam, Meir Lederman, Meir Orenstein, Uzi Pereg, Guy Bartal, Mordechai Segev
    Abstract

    Quantum nanophotonics merges the precision of nanoscale light manipulation with the capabilities of quantum technologies, offering a pathway for enhanced light-matter interaction and compact realization of quantum devices. Here, we show how a recently-demonstrated nonlinear nanophotonic process can be employed to selectively create photonic high-dimensional quantum

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