Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Stabilizer-based quantum simulation of fermion dynamics with local qubit encodings
Anthony Gandon, Samuele Piccinelli, Max Rossmannek +4 more·Dec 12, 2025
Simulating the dynamical properties of large-scale many-fermion systems is a longstanding goal of quantum chemistry, material science and condensed matter. Local fermion-to-qubit encodings have opened a new path for practical fermionic simulations on...
Quantum limits of a space-time reference frame
Davide Mattei, Esteban Castro-Ruiz·Dec 12, 2025
We study the limitations for defining spatial and temporal intervals when the only available reference frame is a single composite quantum system, whose internal degrees of freedom serve as a temporal reference, a clock, and whose center of mass degr...
Quantum circuits for permutation matrices
Jason Hanson·Dec 12, 2025
Two different algorithms are presented for generating a quantum circuit realization of a matrix representing a permutation on $2^n$ letters. All circuits involve $n$ qubits and only use multi--controlled Toffoli gates. The first algorithm constructs ...
Maritime object classification with SAR imagery using quantum kernel methods
John Tanner, Nicholas Davies, Pascal Jahan Elahi +5 more·Dec 12, 2025
Illegal, unreported, and unregulated (IUU) fishing causes global economic losses of 10-25 billion USD annually and undermines marine sustainability and governance. Synthetic Aperture Radar (SAR) provides reliable maritime surveillance under all weath...
Why cut-and-choose quantum state verification cannot be both efficient and secure
Fabian Wiesner, Ziad Chaoui, Diana Kessler +2 more·Dec 12, 2025
Quantum state verification plays a vital role in many quantum cryptographic protocols, as it allows the use of quantum states from untrusted sources. While some progress has been made in this direction, the question of whether the most prevalent type...
QGEC : Quantum Golay Code Error Correction
Hideo Mukai, Hoshitaro Ohnishi·Dec 12, 2025
Quantum computers have the possibility of a much reduced calculation load compared with classical computers in specific problems. Quantum error correction (QEC) is vital for handling qubits, which are vulnerable to external noise. In QEC, actual erro...
Distributed Quantum Magnetic Sensing for Infrastructure-free Geo-localization
Thinh Le, Shiqian Guo, Jianqing Liu·Dec 12, 2025
Modern navigation systems rely heavily on Global Navigation Satellite Systems (GNSS), whose weak spaceborne signals are vulnerable to jamming, spoofing, and line-of-sight blockage. As an alternative, the Earth's magnetic field entails location inform...
Entanglement Evolution of Noisy Quantum Systems: Master Equation-TFD Solutions
Urjjarani Patel, KVS Shiv Chaitanya·Dec 12, 2025
In this paper, Thermofield Dynamics (TFD) is applied to map a quantum optics nonlinear master equation into a Schrodinger-like equation for any arbitrary initial condition. This formalism provides a more efficient way for solving open quantum system ...
A Survey of OAM-Encoded High-Dimensional Quantum Key Distribution: Foundations, Experiments, and Recent Trends
Huan Zhang, Zhenyu Cao, Yu Sun +1 more·Dec 12, 2025
High-dimensional quantum key distribution (HD-QKD) enhances information efficiency and noise tolerance by encoding data in large Hilbert spaces. The orbital angular momentum (OAM) of light provides a scalable basis for such encoding and supports high...
Creation of Depth-Confined, Shallow Nitrogen-Vacancy Centers in Diamond With Tunable Density
Lillian B. Hughes Wyatt, Shreyas Parthasarathy, Isaac Kantor +6 more·Dec 12, 2025
Engineering shallow nitrogen-vacancy (NV) centers in diamond holds the key to unlocking new advances in nanoscale quantum sensing. We find that the creation of near-surface NVs through delta doping during diamond growth allows for tunable control ove...
On Shor's conjecture on the accessible information of quantum dichotomies
Khac Duc An Thai, Michele Dall'Arno·Dec 12, 2025
Around the turn of the century, Shor formulated his well-known and still-open conjecture stating that the accessible information of any quantum dichotomy, that is the maximum amount of classical information that can be decoded from a binary quantum e...
Enhancing Long-distance Continuous-variable Quantum-key-distribution with an Error-correcting Relay
S. Nibedita Swain, Ryan J. Marshman, Josephine Dias +2 more·Dec 12, 2025
Noiseless linear amplifiers (NLAs) serve as an effective means to enable long-distance continuous-variable (CV) quantum key distribution (QKD), even under realistic conditions with non-unit reconciliation efficiency. Separately, unitary averaging has...
Symmetry-protected topological scar subspaces
Chihiro Matsui, Thomas Quella, Naoto Tsuji·Dec 12, 2025
We propose a framework that extends the notion of symmetry-protected topological properties beyond the ground-state paradigm to dynamically isolated subspaces formed by exceptional non-thermal energy eigenstates of non-integrable systems, known as qu...
The resource theory of causal influence and knowledge of causal influence
Marina Maciel Ansanelli, Beata Zjawin, David Schmid +5 more·Dec 12, 2025
Understanding and quantifying causal relationships between variables is essential for reasoning about the physical world. In this work, we develop a resource-theoretic framework to do so. Here, we focus on the simplest nontrivial setting -- two varia...
Theory of Out-of-Time-Ordered Transport
Ruchira Mishra, Jiaozi Wang, Silvia Pappalardi +1 more·Dec 12, 2025
We construct an effective field theory (EFT) that captures the universal behavior of out-of-time-order correlators (OTOCs) at late times in generic quantum many-body systems with conservation laws. The EFT hinges on a generalization of the strong-to-...
A Reference Architecture for Embedding Quantum Software Into Enterprise Systems
Marc Uphues, S. Thöne, Herbert Kuchen·Dec 12, 2025
Quantum computing promises a remarkable performance boost for certain applications, including computational intensive problems addressed by enterprise systems. However, software architectures of enterprise systems must consider specific characteristi...
Negative Marginal Densities in Mixed Quantum-Classical Liouville Dynamics
Kai Gu, Jeremy Schofield·Dec 11, 2025
The mixed quantum-classical Liouville equation (QCLE) provides an approximate perturbative framework for describing the dynamics of systems with coupled quantum and classical degrees of freedom of disparate thermal wavelengths. The evolution governed...
Investigating Different Barren Plateaus Mitigation Strategies in Variational Quantum Eigensolver
Mostafa Atallah, Nouhaila Innan, Muhammad Kashif +1 more·Dec 11, 2025
Variational Quantum Eigensolver (VQE) algorithms suffer from barren plateaus, where gradients vanish with system size and circuit depth. Although many mitigation strategies exist, their connection to convergence performance under different iteration ...
Solutions of Koopman-von Neumann equations, their superpositions, orthogonality and uncertainties
Mustafa Amin, Mark A. Walton·Dec 11, 2025
The Koopman-von Neumann (KvN) formulation brings classical mechanics to Hilbert space, but many techniques familiar from quantum mechanics remain missing. One would hope to solve eigenvalue problems, obtain orthonormal eigenstates of Hermitian operat...
Network-Irreducible Multiparty Entanglement in Quantum Matter
Liuke Lyu, Pedro Lauand, William Witczak-Krempa·Dec 11, 2025
We show that the standard approach to characterize collective entanglement via genuine multiparty entanglement (GME) leads to an area law in ground and thermal Gibbs states of local Hamiltonians. To capture the truly collective part one needs to go b...