Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Anomalous weak values in a generalized Mach-Zehnder interferometer extracted directly from intensity measurements
Ismaele V. Masiello, Hartmut Lemmel, Andreas Dvorak +2 more·Jun 23, 2026
Weak values provide a powerful framework for characterizing quantum systems. Their experimental extraction conventionally relies on weak conditioned von Neumann measurements, involving weak interactions and meter states that increase experimental com...
Compressed Quantum Operators and Roots of Hermite Polynomials
Serge Adonsou, Guillaume Dauphinais, David W. Kribs +1 more·Jun 23, 2026
The fundamental position and momentum operators of quantum mechanics are unbounded, but finite rank compressions of the operators can be considered to obtain partial information on the operators and their properties. Motivated by problems in photonic...
Faster algorithm for achieving minimal-size quantum decision diagrams
Juul Sanders, Sebastiaan Brand, Arend-Jan Quist +1 more·Jun 23, 2026
The decision diagram (DD) data structure enables fast linear-algebra calculations by bringing vectors into a normal form and subsequently merging equivalent ones, yielding a minimally-sized DD modulo the equivalence relation. A fruitful application a...
A high-fidelity two-qubit gate for multimode superconducting P-mon qubits
Frederik Pfeiffer, Federico A. Roy, Niklas J. Glaser +11 more·Jun 23, 2026
To scale superconducting quantum processors, it is essential to achieve long coherence times while engineering interactions that do not introduce additional decoherence channels. In superconducting qubit systems, this can be realized using multimode ...
Two-Electron Effects Extend High-Harmonic Generation into the keV Regime
Isobel McSweeney, Andres Marchisio, Javier Rivera-Dean +4 more·Jun 23, 2026
Two-electron processes can generate high harmonics beyond the conventional single-active-electron cutoff. Motivated by recent experimental evidence of an extended secondary plateau in the helium high-harmonic spectrum [S. Wang et al, Optica, (2023); ...
Asymptotic Compression of Interactive Quantum Communication using Type-Constrained de Finetti Reduction
Louis Desruisseaux, Simon Ducharme, Gurleen Padda +1 more·Jun 23, 2026
For many information processing tasks, de Finetti-style theorems can often simplify the analysis in worst-case input scenarios for which the task exhibits some permutation-invariance symmetry, as they can allow for a reduction from an analysis on wor...
On the Limits of Stretching Quantum Pseudorandomness
Boyang Chen, Andrea Coladangelo, Yao-Ting Lin +3 more·Jun 23, 2026
Pseudorandom states, introduced by Ji, Liu, and Song (CRYPTO '18), are quantum analogues of classical pseudorandom generators. A fundamental property of classical pseudorandom generators is that their output can be stretched to arbitrary polynomial l...
Rotational Vacuum Friction of Nonabsorbing Particles
F. Javier García de Abajo, Alejandro Manjavacas·Jun 23, 2026
A nonabsorbing particle rotating in vacuum can lose angular momentum only by converting mechanical energy into electromagnetic radiation. Here, we develop a quantum theory of rotational vacuum friction for small lossless particles and show that axial...
On the localization transition from MAA to AA models
Hangdong Qiu, Yunhua Wang·Jun 23, 2026
Despite their potential similarity between the mosaic Aubry-André (MAA) and AA models, the MAA model allows mobility edges (MEs), whereas the AA model does not. Here we develop a new double quasiperiodic MAA (DMAA) model consisting of one primitive M...
Symmetric mass generation of interacting chiral fermions on a one-dimensional lattice without fermion doubling
V. A. Zakharov, Atsushi Ueda, Frank Verstraete +1 more·Jun 23, 2026
Symmetric mass generation is the interaction-induced opening of a fermion gap without spontaneous symmetry breaking. The anomaly-free 3-4-5-0 model of Wang and Wen provides a minimal one-dimensional setting for this phenomenon, but a direct lattice r...
Exceptional by Design: Long-Range Hopping as a Knob for Exceptional Point Control
Carolina Martinez-Strasser, Dario Bercioux, Nico Leumer·Jun 23, 2026
Exceptional points are degeneracies unique to non-Hermitian systems, where eigenvalues and eigenvectors coalesce, rendering the Hamiltonian defective. We investigate the exceptional-point structure and topological properties of a generalized non-Herm...
A Universal All-Fiber Quantum Buffer for the Telecom Band
Domenico Compagnini, Noemi Tagliavacche, Sara Congia +4 more·Jun 23, 2026
The realization of a scalable quantum internet relies on the ability to temporally align asynchronous photonic signals through on-demand buffering. While matter-based quantum memories achieve long storage times, their extremely narrow bandwidths and ...
Nonlinear refractive index of warm rubidium vapor
L. Kardum, G. Premec, N. Šantić +1 more·Jun 23, 2026
The potential to precisely control both the linear and nonlinear index of refraction through optical manipulation of the atomic states has recently pushed warm alkali vapors to the forefront of research in the field of quantum sensors, quantum memori...
Preparing multi-qudit states in a definite-weight subspace
Nabi Zare Harofteh, Rafael I. Nepomechie·Jun 23, 2026
We formulate a deterministic algorithm for preparing arbitrary multi-qudit states in a definite-weight subspace. By ordering the corresponding computational basis states according to a Gray code for multiset permutations, the state-preparation task i...
Reachability and optimal-time certificates for quantum control
Younes Naceur, Llorenç Balada Gaggioli·Jun 23, 2026
Finite-time control is central to quantum technologies, yet rigorous limits on reachable targets and optimal control times remain largely unknown. We develop a framework for finite-time reachability and optimal-time certificates in constrained quantu...
The Quantum Split-Step Fourier Algorithm for Nonlinear Optical Waveguides
Fabio Biancalana·Jun 23, 2026
We introduce the Quantum Split-Step Fourier (QSSF) algorithm for nonlinear optical waveguides, a numerical framework that combines split-step propagation of the nonlinear Schrödinger equation with a commutator-preserving Bogoliubov evolution of Gauss...
Visualizing "We the People": Bridging the Perception Gap through Pluralistic Data Storytelling
Lisa Schirch, Beth Goldberg·Jun 23, 2026
Traditional visual data storytelling relies on binary graphics that depict two simplified groups in conflict. This can increase political polarization by oversimplifying intra-group disagreements and erasing ambiguity and shared ideas or values. This...
Quantum-enabled active matter at the atomic scale
Sabrina Burgardt, Julian Feß, Alexander Guthmann +8 more·Jun 23, 2026
Active matter comprises particles that extract energy from their local environment and convert it into motion. Although active particles have been miniaturized down to the nanoscale, realizing activity at the fundamentally smaller scale of individual...
The $ω$-Effect from a Multimode Squeezed Graviton State
Nick E. Mavromatos, Sarben Sarkar·Jun 23, 2026
The $ω$-effect in entangled neutral-meson systems provides a sensitive probe of CPT violation induced by quantum-gravitational environments. In open quantum systems, interactions with inaccessible gravitational degrees of freedom can render the reduc...
Auxiliary Schmidt Rank as a Resource for Photonic Bell Measurements
Pradip Laha, Peter van Loock·Jun 23, 2026
In quantum communication and fusion-based quantum computation, photonic Bell measurements are fundamentally limited when only passive linear optics is employed. While for qubits, some Bell states can be unambiguously identified with static beam split...