Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
28,250
This Month
22
Today
0
Research Volume
13,405 papers in 12 months (-22% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Probing quantum advantage for solving the Fermi-Hubbard model with entropy benchmarking
Pauline Besserve, Raúl García-Patrón·Oct 1, 2025
We developed a practical quantum advantage benchmarking framework that connects the accumulation of entropy in a quantum processing unit and the degradation of the solution to a target optimization problem. The benchmark is based on approximating fro...
Triple-Tone Microwave Control for Sensitivity Optimization in Compact Ensemble Nitrogen-Vacancy Magnetometers
Ankita Chakravarty, Romain Ruhlmann, Vincent Halde +4 more·Oct 1, 2025
Ensembles of nitrogen-vacancy (NV) centers in diamond are a well-established platform for quantum magnetometry under ambient conditions. One challenge arises from the hyperfine structure of the NV, which, for the common $^{14}$N isotope, results in a...
Optimal Untelegraphable Encryption and Implications for Uncloneable Encryption
Anne Broadbent, Eric Culf, Denis Rochette·Oct 1, 2025
We investigate the notion of untelegraphable encryption (UTE), a quantum encryption primitive that is a special case of uncloneable encryption (UE), where the adversary's capabilities are restricted to producing purely classical information rather th...
Visualizing Quantum Circuits: State Vector Difference Highlighting and the Half-Matrix
Michael J. McGuffin, Jean-Marc Robert·Oct 1, 2025
Existing graphical user interfaces for circuit simulators often show small visual summaries of the reduced state of each qubit, showing the probability, phase, purity, and/or Bloch sphere coordinates associated with each qubit. These necessarily prov...
Perfect Quantum State Revivals: Designing Arbitrary Potentials with Specified Energy Levels
Aaron Danner, Tomáš Tyc·Oct 1, 2025
It is known that there exist a limited number of analytic potentials with the unusual property that any bound quantum state therein will be periodic in time. This is known as a perfect quantum state revival. Examples of such potentials are the infini...
Quantum adders: on the structural link between the ripple-carry and carry-lookahead techniques
Maxime Remaud·Oct 1, 2025
This paper is motivated by two key observations. First, Toffoli ladders can be implemented in three distinct ways: with linear or polylogarithmic depth using no ancilla, or with logarithmic depth using ancilla qubits. Second, two fundamental structur...
Effective Dynamics for Weakly Interacting Bosons in an Iterated High-Density Thermodynamic Limit
Daniele Ferretti, Kalle Koskinen·Oct 1, 2025
We study the time evolution of weakly interacting Bose gases on a three-dimensional torus of arbitrary volume. The coupling constant is supposed to be inversely proportional to the density, which is considered to be large and independent of the parti...
Diffraction by Circular and Triangular Apertures as a Diagnostic Tool of Twisted Matter Waves
Maksim Maksimov, Nikita Borodin, Daria Kargina +2 more·Oct 1, 2025
We study diffraction of twisted matter waves (electrons and light ions carrying orbital angular momentum $\ell/\hbar=0,\pm1,\pm2,\ldots$ by circular and triangular apertures. Within the scalar Kirchhoff-Fresnel framework, circular apertures preserve ...
Simple Quantum Algorithm for Approximate $k$-Mismatch Problem
Ruhan Habib, Shadman Shahriar·Oct 1, 2025
In the $k$-mismatch problem, given a pattern and a text of length $n$ and $m$ respectively, we have to find if the text has a sub-string with a Hamming distance of at most $k$ from the pattern. This has been studied in the classical setting since 198...
Pre-Distillation of Magic States via Composite Schemes
Muhammad Erew, Moshe Goldstein, Yaron Oz +1 more·Oct 1, 2025
Magic state distillation (MSD) is a cornerstone of fault-tolerant quantum computing, enabling non-Clifford gates via state injection into stabilizer circuits. However, the substantial overhead of current MSD protocols remains a major obstacle to scal...
Computational Monogamy of Entanglement and Non-Interactive Quantum Key Distribution
Alex B. Grilo, Giulio Malavolta, Michael Walter +1 more·Oct 1, 2025
Quantum key distribution (QKD) enables Alice and Bob to exchange a secret key over a public, untrusted quantum channel. Compared to classical key exchange, QKD achieves everlasting security: after the protocol execution the key is secure against adve...
Pointwise spinor quantum fields cannot be microcausal nor Poincaré covariant
Samuel Fedida·Oct 1, 2025
We extend and strengthen no-go results on pointwise-defined quantum fields to cover general spinors. We show that the weak continuity of quantum fields rules out equal-time canonical conjugate (anti)commutation relations in globally hyperbolic spacet...
Proper Theory of Magnon Orbital Angular Momentum
Junyu Tang, Ran Cheng·Oct 1, 2025
The orbital motion of chargeless bosons, unlike that of electrons, does not generate a magnetic moment and thus cannot directly interact with magnetic fields. Utilizing the Aharonov-Casher effect and perturbation theory, we formulate a proper theory ...
On Estimating the Quantum Tsallis Relative Entropy
Jinge Bao, Minbo Gao, Qisheng Wang·Oct 1, 2025
The relative entropy between quantum states quantifies their distinguishability. The estimation of certain relative entropies has been investigated in the literature, e.g., the von Neumann relative entropy and sandwiched Rényi relative entropy. In th...
Practical considerations for assignment of photon numbers with SNSPDs
Timon Schapeler, Isabell Mischke, Fabian Schlue +4 more·Oct 1, 2025
Superconducting nanowire single-photon detectors (SNSPDs) can enable photon-number resolution (PNR) based on accurate measurements of the detector's response time to few-photon optical pulses. In this work we investigate the impact of the optical pul...
An InAsSb surface quantum well with in-situ deposited Nb as a platform for semiconductor-superconductor hybrid devices
Sjoerd Telkamp, Zijin Lei, Tommaso Antonelli +7 more·Oct 1, 2025
We present a novel semiconductor-superconductor hybrid material based on a molecular beam epitaxially grown InAsSb surface quantum well with an in-situ deposited Nb top layer. Relative to conventional Al-InAs based systems, the InAsSb surface quantum...
Temperature Dependence of the Response Functions of Graphene: Impact on Casimir and Casimi-Polder Forces in and out of Thermal Equilibrium
G. L. Klimchitskaya, V. M. Mostepanenko·Oct 1, 2025
We review and obtain some new results on the temperature dependence of spatially nonlocal response functions of graphene and their applications to calculation of both the equilibrium and nonequilibrium Casimir and Casimir-Polder forces. After a brief...
Provably Optimal Quantum Circuits with Mixed-Integer Programming
Harsha Nagarajan, Zsolt Szabó·Oct 1, 2025
We present a depth-aware optimization framework for quantum circuit compilation that unifies provable optimality with scalable heuristics. For exact synthesis of a target unitary, we formulate a mixed-integer linear program (MILP) that linearly handl...
On the Relativity of Quantumness as Implied by Relativity of Arithmetic and Probability
Marek Czachor·Oct 1, 2025
A hierarchical structure of isomorphic arithmetics is defined by a bijection $g_\mathbb{R}:\mathbb{R}\to \mathbb{R}$. It entails a hierarchy of probabilistic models, with probabilities $p_k=g^k(p)$, where $g$ is the restriction of $g_\mathbb{R}$ to t...
Linear-Size QAC0 Channels: Learning, Testing and Hardness
Yangjing Dong, Fengning Ou, Penghui Yao·Oct 1, 2025
Shallow quantum circuits have attracted increasing attention in recent years, due to the fact that current noisy quantum hardware can only perform faithful quantum computation for a short amount of time. The constant-depth quantum circuits $\mathbf{Q...