Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
27,980
This Month
1,396
Today
0
Research Volume
13,222 papers in 12 months (+3% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
When Less is More: Approximating the Quantum Geometric Tensor with Block Structures
Ahmedeo Shokry, Alessandro Santini, Filippo Vicentini·Oct 9, 2025
The natural gradient is central in neural quantum states optimizations but it is limited by the cost of computing and inverting the quantum geometric tensor, the quantum analogue of the Fisher information matrix. We introduce a block-diagonal quantum...
A resource theory of gambling
Maite Arcos, Renato Renner, Jonathan Oppenheim·Oct 9, 2025
Betting games provide a natural setting to capture how information yields strategic advantage. The Kelly criterion for betting, long a cornerstone of portfolio theory and information theory, admits an interpretation in the limit of infinitely many re...
Entanglement Growth from Entangled States: A Unified Perspective on Entanglement Generation and Transport
Chun-Yue Zhang, Zi-Xiang Li, Shi-Xin Zhang·Oct 9, 2025
Studies of entanglement dynamics in quantum many-body systems have focused largely on initial product states. Here, we investigate the far richer dynamics from initial entangled states, uncovering universal patterns across diverse systems ranging fro...
Computing moment polytopes -- with a focus on tensors, entanglement and matrix multiplication
Maxim van den Berg, Matthias Christandl, Vladimir Lysikov +3 more·Oct 9, 2025
Tensors are fundamental in mathematics, computer science, and physics. Their study through algebraic geometry and representation theory has proved very fruitful in the context of algebraic complexity theory and quantum information. In particular, mom...
Quantum memory optimisation using finite-horizon, decoherence time and discounted mean-square performance criteria
Igor G. Vladimirov, Ian R. Petersen, Guodong Shi·Oct 9, 2025
This paper is concerned with open quantum memory systems for approximately retaining quantum information, such as initial dynamic variables or quantum states to be stored over a bounded time interval. In the Heisenberg picture of quantum dynamics, th...
Adversarial Thermodynamics
Maite Arcos, Philippe Faist, Takahiro Sagawa +1 more·Oct 9, 2025
In thermodynamics, an agent's ability to extract work is fundamentally constrained by their environment. Traditional frameworks struggle to capture how strategic decision-making under uncertainty, particularly an agent's tolerance for risk, determine...
Enhancing optomechanical force sensing utilizing synthetic magnetism
Ding-hui Xu, Zheng Liu, Chang-shui Yu·Oct 9, 2025
In precision force sensing of multi-mechanical mode optomechanical systems, coherent interference can decouple certain degenerate vibrational modes from the cavity field, leading to incomplete information regarding the measured signal. In this paper,...
Classification and implementation of unitary-equivariant and permutation-invariant quantum channels
Laura Mančinska, Elias Theil·Oct 9, 2025
Many quantum information tasks use inputs of the form $ρ^{\otimes m}$, which naturally induce permutation and unitary symmetries. We classify all quantum channels that respect both symmetries - i.e. unitary-equivariant and permutation-invariant quant...
Adaptive Quantum Homeopathy
Lennart Bittel, Lorenzo Leone·Oct 9, 2025
Randomness is a fundamental resource in quantum information, with crucial applications in cryptography, algorithms, and error correction. A central challenge is to construct unitary $k$-designs that closely approximate Haar-random unitaries while min...
Three-dimensional optical characterization of magnetostrictive deformation in magnomechanical systems
Xiaomin Liu, Jing Zhang, Jie Li +3 more·Oct 9, 2025
Magnomechanical systems with YIG spheres have been proven to be an ideal system for studying magnomechanically induced transparency, dynamical backaction, and rich nonlinear effects, such as the magnon-phonon cross-Kerr effect. Accurate characterizat...
An infinite hierarchy of multi-copy quantum learning tasks
Jan Nöller, Viet T. Tran, Mariami Gachechiladze +1 more·Oct 9, 2025
Learning properties of quantum states from measurement data is a fundamental challenge in quantum information. The sample complexity of such tasks depends crucially on the measurement primitive. While shadow tomography achieves sample-efficient learn...
Quantum Entanglement without Spin-Analyzing Power Dependence at the Colliders
Junle Pei, Tianjun Li, Lina Wu +2 more·Oct 9, 2025
We study the quantum entanglement at the colliders which is independent of the spin-analyzing powers. Taking $Λ(\to pπ^-)\barΛ(\to \bar{p}π^+)$ as an example, we investigate whether quantum entanglement in fermion pairs produced at colliders can be c...
Measuring gravitational lensing time delays with quantum information processing
Zhenning Liu, William DeRocco, Shiming Gu +6 more·Oct 9, 2025
The gravitational fields of astrophysical bodies bend the light around them, creating multiple paths along which light from a distant source can arrive at Earth. Measuring the difference in photon arrival time along these different paths provides a m...
Optimal and Robust In-situ Quantum Hamiltonian Learning through Parallelization
Suying Liu, Xiaodi Wu, Murphy Yuezhen Niu·Oct 9, 2025
Hamiltonian learning is a cornerstone for advancing accurate many-body simulations, improving quantum device performance, and enabling quantum-enhanced sensing. Existing readily deployable quantum metrology techniques primarily focus on achieving Hei...
The debiased Keyl's algorithm: a new unbiased estimator for full state tomography
Angelos Pelecanos, Jack Spilecki, John Wright·Oct 9, 2025
In the problem of quantum state tomography, one is given $n$ copies of an unknown rank-$r$ mixed state $ρ\in \mathbb{C}^{d \times d}$ and asked to produce an estimator of $ρ$. In this work, we present the debiased Keyl's algorithm, the first estimato...
Voxel-scale quantum state control in nanorod ensembles using reconfigurable needle beams
G. A. Mantashian, D. B. Hayrapetyan, P. A. Mantashyan·Oct 9, 2025
Precisely addressing single nanostructures inside dense ensembles remains a bottleneck for scalable photonic and quantum information devices. Here we demonstrate, through comprehensive finite element and variational Monte-Carlo modelling, that a reco...
Quantum Shannon Information Theory -Design of communication, cipher and sensor-
Osamu Hirota·Oct 9, 2025
One of the key aspects of Shannon's theory is that it provides guidance for designing the most efficient systems, such as minimizing errors and clarifying the limits of coding. Such theories have made great developments in the 50 years since 1948. It...
Photon triplets from integrated microrings: A path towards deterministic non-Gaussianity on a chip
Samuel E. Fontaine, J. E. Sipe, Marco Liscidini +1 more·Oct 9, 2025
We propose cascaded spontaneous four-wave mixing (SFWM) in microring resonators as a scalable and efficient approach for directly generating non-Gaussian states of light. Focusing on the well-understood "low-gain" regime, we demonstrate that triplet ...
AI-Driven Post-Quantum Cryptography for Cyber-Resilient V2X Communication in Transportation Cyber-Physical Systems
Akid Abrar, Sagar Dasgupta, Mizanur Rahman +1 more·Oct 9, 2025
Transportation Cyber-Physical Systems (TCPS) integrate physical elements, such as transportation infrastructure and vehicles, with cyber elements via advanced communication technologies, allowing them to interact seamlessly. This integration enhances...
Variational formulae for entropy-like functionals for states in von Neumann algebras
Andrzej Łuczak, Hanna Podsędkowska, Rafał Wieczorek·Oct 8, 2025
The paper presents variational formulae for entropy-like functionals, including Segal and Rényi entropies, for normal states on semifinite von Neumann algebras. The considered functionals are of the form $τ(f(h))$ where $τ$ is a normal faithful semif...