Papers
Interplay of internal and external coupling phases in cavity magnonics: from level repulsion to attraction
Guillaume Bourcin, Mufti Avicena, Vincent Vlaminck +2 more·Mar 5, 2026
We experimentally validate a unified input--output model that incorporates internal and external coupling phases in a room-temperature cavity magnonic system. By explicitly accounting for phase effects, the model provides full control of interference...
Unified Integer and Fractional Quantum Hall Effects from Boundary-Induced Edge-State Quantization
Pedro Pereyra·Mar 4, 2026
Despite the success of Landau-level theory and edge-state transport formalisms, a direct microscopic link between bulk quantization and the observed hierarchy of quantum Hall plateaus has not been established. In particular, no unified microscopic me...
Feedback-Induced Advantage in Quantum Clockworks
Jakob Miller, Paul Erker·Mar 4, 2026
Atomic frequency standards have achieved steadily increasing precision over the past seventy years, enabled in part by feedback mechanisms that stabilise their output. In parallel, the timekeeping capabilities of quantum systems have been explored wi...
Chiral and pair superfluidity in triangular ladder produced by state-dependent Kronig-Penney lattice
Domantas Burba, Giedrius Žlabys, Dzmitry Viarbitski +2 more·Mar 4, 2026
We propose a concrete realization of a triangular ladder for ultracold atoms, which simultaneously hosts geometric frustration and unusual two-body interactions, and in particular controllable pair hopping and density-induced tunneling. This is done ...
Realizing anomalous Floquet non-Abelian band topology in photonic scattering networks
Yuze Hu, Mingyu Tong, Tian Jiang +10 more·Mar 4, 2026
The concept of multi-gap topology has recently been shown to give rise to uncharted phases beyond conventional single-gap classifications. These phases relate to band nodes with non-Abelian quaternion charges and momentum-space braiding processes cha...
Non-Hermitian Quantum Mechanics with Applications to Gravity
Oem Trivedi, Alfredo Gurrola, Robert J. Scherrer·Mar 4, 2026
Hermiticity is usually treated as a foundational axiom of quantum mechanics, guaranteeing real spectra and unitary time evolution. In this work we argue that Hermiticity is more naturally understood as a symmetry law arising from the global conservat...
Dynamical Behaviour of Density Correlations Across the Chaotic Phase for Interacting Bosons
Óscar Dueñas, Alberto Rodríguez·Mar 4, 2026
We investigate the propagation of two-point density correlations in the one-dimensional Bose-Hubbard Hamiltonian in the thermodynamic limit in terms of the correlation transport distance (CTD), an experimentally measurable magnitude that characterize...
Air-stable bright entangled photon-pair source from graphene-encapsulated van der Waals ferroelectric NbOI2
Mayank Joshi, Mengting Jiang, Yu Xing +6 more·Mar 4, 2026
Van der Waals (vdW) ferroelectrics are emerging nonlinear photonic materials that combine large second-order susceptibility \c{hi}(2) with heterostructure compatibility, offering an attractive route toward miniaturized spontaneous parametric down-con...
Recovery-Induced Erasure Attack on QKD Systems
Hashir Kuniyil, Asad Ali, Syed M. Arslan +3 more·Mar 3, 2026
Detector dead time is typically treated as a fixed parameter in quantum key distribution (QKD) security analyses. In practice, however, the effective recovery time of single-photon avalanche photodiodes (SPADs) depends on the incident count rate. In ...
Motion-induced directionality of collective emission in a non-chiral waveguide
Yoan Spahn, Jens Hartmann, Benedikt Saalfrank +3 more·Mar 3, 2026
We report on the observation of motion-induced directionality in the collective emission of atoms confined within a hollow-core waveguide. Unlike in chiral waveguides, the atom-field coupling is here isotropic in the forward and backward direction. H...
Geometric mechanisms enabling spin- and enantio-sensitive observables in one photon ionization of chiral molecules
Philip Caesar M. Flores, Stefanos Carlström, Serguei Patchkovskii +3 more·Mar 3, 2026
We examine spin-resolved photoionization of randomly oriented chiral molecules via circularly polarized light, and revisit earlier predictions of Cherepkov (J. Phys. B: Atom. Mol. Phys. 16, 1543, 1983). We will show that the dynamical origin of spin-...
Rate-Fidelity Tradeoffs in All-Photonic and Memory-Equipped Quantum Switches
Panagiotis Promponas, Leonardo Bacciottini, Paul Polakos +3 more·Mar 3, 2026
Quantum entanglement switches are a key building block for early quantum networks, and a central design question is whether near-term devices should use only flying photons or also incorporate quantum memories. We compare two architectures: an all-ph...
Steering paths mid-flight for fault-tolerance in measurement-based holonomic gates
Anirudh Lanka, Juan Garcia-Nila, Todd A. Brun·Mar 3, 2026
Continuous measurement-based holonomic quantum computation provides a route to universal logical computation in quantum error correcting codes. We introduce a fault-tolerant framework for implementing measurement-based holonomic gates that leverages ...
Measurement of a quantum system using spin-mechanical conversion
A. A. Wood, D. S. Rice, T. Xie +5 more·Mar 3, 2026
Levitated macroscopic particles exhibiting quantum mechanical effects are garnering increased attention as a means for precision sensing and testing quantum mechanics. Defects in diamond, such as the nitrogen-vacancy (NV) centre possess optically-add...
RIS-Enabled Wireless Channel Equalization: Adaptive RIS Equalizer and Deep Reinforcement Learning
Gal Ben-Itzhak, Ender Ayanoglu·Mar 3, 2026
Reconfigurable Intelligent Surfaces (RISs) offer a promising means of reshaping the wireless propagation environment, yet practical methods for configuring large passive arrays to achieve reliable signal equalization remain limited. Equalization is e...
Symmetry-protected topology and deconfined solitons in a multi-link $\mathbb{Z}_2$ gauge theory
Enrico C. Domanti, Alejandro Bermudez·Mar 2, 2026
With the advent of quantum simulators, exploring exotic collective phenomena in lattice models with local symmetries and unconventional geometries is at reach of near-term experiments. Motivated by recent progress in this direction, we study a $\math...
Quantum Scattering of Fullerene 12C60 with Rare Gas Atoms and its selection rules for rotational quenching
Alexander Petrov, Anna Linnik, Jacek Klos +2 more·Mar 2, 2026
The discovery of the C60 fullerene opened new horizons to design carbon nanostructures with targeted electronic structure as well as transport and optical properties. For example, endohedral 12C60 molecules were proposed as candidates for functional ...
Decoherence and entropy production due to quantum fluctuations of spacetime
Thiago H. Moreira·Mar 2, 2026
The intersection between quantum mechanics and gravitational physics has been providing challenging puzzles for decades. In this thesis, we study the dynamics of an open quantum system coupled with a bath of gravitons, the quanta of the gravitational...
Tensor-network methodology for super-moiré excitons beyond one billion sites
Anouar Moustaj, Yitao Sun, Tiago V. C. Antão +2 more·Mar 2, 2026
Computing excitonic spectra in quasicrystal and super-moiré systems constitutes a formidable challenge due to the exceptional size of the excitonic Hilbert space. Here, we demonstrate a tensor-network method for the real-space Bethe-Salpeter Hamilton...
Gain-induced spectral non-degeneracy in type-II parametric down-conversion
Behnood Taheri, Denis Kopylov, Manfred Hammer +3 more·Mar 2, 2026
We demonstrate the novel effect of gain-induced spectral shifts in the type-II parametric down-conversion (PDC) process, which results in a transition from degenerate to non-degenerate PDC with increasing parametric gain. This effect, originating fro...