Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Hierarchical divide and conquer quantum approach to combinatorial optimization problems with tunable reduction
Mathias Schmid, Naeimeh Mohseni, Michael J. Hartmann·Dec 20, 2025
Combinatorial optimization is considered a promising class of problems in which quantum computers can show significant advantages. However, problems of practical relevance typically have more variables than current or foreseeable quantum computers ha...
On the measurement problem in quantum mechanics: a simple proposal
Luigi E. Picasso·Dec 20, 2025
Some of the problems connected with the interpretation of quantum mechanics are enumerated, in particular those related to some well known paradoxes and, above all, to the measurement process. We then show how the so called "Physics Laboratory Assump...
Rydberg Vision via frugal Quantum Image Fingerprinting
Vikrant Sharma, Neel Kanth Kundu·Dec 20, 2025
Gate-based quantum image processing is constrained by qubit scarcity and the high overhead of quantum state preparation, limiting its applicability to realistic geometric data. We introduce a quantum-native framework for image matching on neutral-ato...
Beyond spin-1/2: Multipolar spin-orbit coupling in noncentrosymmetric crystals with time-reversal symmetry
Masoud Bahari, Kristian Mæland, Carsten Timm +1 more·Dec 20, 2025
We develop a symmetry-adapted multipolar $\mathbf{k}\cdot\mathbf{p}$ theory close to the bulk $Γ$ point for time-reversal-symmetric, noncentrosymmetric $C_{3v}$ crystals in the strong atomic spin-orbit-coupling ($jj$-coupling) limit. Using a $j\in\{1...
A Phase Space Representation of the Metaplectic Group
Maurice de Gosson·Dec 20, 2025
The symplectic group Sp(n) acts on phase space while the unitary representation of its double cover, Mp(n), the metaplectic group, acts on functions defined on configuration space. We will construct an extension Mp(n) of Mp(n) acting on square integr...
Partner-mode overlap as a symplectic-invariant measure of correlations in Gaussian Systems
Ivan Agullo, Eduardo Martín-Martínez, Sergi Nadal-Gisbert +1 more·Dec 20, 2025
We introduce a locally symplectic-invariant quantifier of correlations between two different arbitrary modes in bosonic Gaussian systems, denoted by $\mathcal{D}^{\mathrm{sym}}$. This quantity admits a simple geometric interpretation as an overlap be...
There is No Quantum World
Jeffrey Bub·Dec 20, 2025
I outline a neo-Bohrian interpretation of quantum mechanics -- a view of quantum mechanics that accords with the core insights in Bohr's thinking, with a twist that justifies the prefix `neo.' In a second part of the paper, I show how von Neumann's w...
Momentum-resolved spectral functions of super-moiré systems using tensor networks
Anouar Moustaj, Yitao Sun, Tiago V. C. Antão +1 more·Dec 20, 2025
Computing spectral functions in large, non-periodic super-moiré systems remains an open problem due to the exceptionally large system size that must be considered. Here, we establish a tensor network methodology that allows computing momentum-resolve...
Size-Consistent Quantum Chemistry on Quantum Computers
Noah Garrett, Michael Rose, David A. Mazziotti·Dec 20, 2025
Hybrid quantum-classical algorithms have begun to leverage quantum devices to efficiently represent many-electron wavefunctions, enabling early demonstrations of molecular simulations on real hardware. A key prerequisite for scalable quantum chemistr...
Triple measurements uncertainty and the distinguishment between the separable and entangled states
Minyi Huang, Ray-Kuang Lee·Dec 20, 2025
Uncertainty and entanglement are both profound and key concepts in quantum theory. For three observables, the tightest uncertainty constants for both product and summation forms are revealed. In this work, we give an alternative proof for three obser...
Full Quantum Work Statistics for Non-Homogeneous Many-Body Systems
Antonio Palamara, Francesco Plastina, Antonello Sindona +1 more·Dec 20, 2025
The nonequilibrium thermodynamics of interacting quantum many-body systems is investigated within the framework of thermal time-dependent density functional theory using a generalized linear-response formulation for the full quantum work statistics. ...
Experimental Efficient Source-Independent Quantum Secret Sharing against Coherent Attacks
Yi-Ran Xiao, Hua-Lei Yin, Wen-Ji Hua +2 more·Dec 20, 2025
Source-independent quantum secret sharing (SI QSS), while essential for secure multiuser cryptographic operations in quantum networks, faces significant implementation challenges stemming from the inherent complexity of generating and distributing mu...
Cyber Risk Scoring with QUBO: A Quantum and Hybrid Benchmark Study
Remo Marini, Riccardo Arpe·Dec 20, 2025
Assessing cyber risk in complex IT infrastructures poses significant challenges due to the dynamic, interconnected nature of digital systems. Traditional methods often fall short, relying on static and largely qualitative models that do not scale wit...
Controlling Ultrafast Excitations in Germanium:The Role of Pump-Pulse Parameters and Multi-Photon Resonances
Amir Eskandari-asl, Adolfo Avella·Dec 20, 2025
We employ the Dynamical Projective Operatorial Approach (DPOA) to investigate the ultrafast optical excitations of germanium under intense, ultrashort pump pulses. The method has very low resource demand relative to many other available approaches an...
Evolutionary BP+OSD Decoding for Low-Latency Quantum Error Correction
Hee-Youl Kwak, Seong-Joon Park, Hyunwoo Jung +2 more·Dec 20, 2025
We propose an evolutionary belief propagation (EBP) decoder for quantum error correction, which incorporates trainable weights into the BP algorithm and optimizes them via the differential evolution algorithm. This approach enables end-to-end optimiz...
Quantum hash function using discrete-time quantum walk on Hanoi network
Pulak Ranjan Giri·Dec 20, 2025
Quantum walk based hash functions have attracted a lot of attention in recent years because of its faster execution time and robust resistance against attacks compared to classical hash functions. It has been observed that the underlying graph and th...
Casimir operators for the relativistic quantum phase space symmetry group
Philippe Manjakasoa Randriantsoa, Ravo Tokiniaina Ranaivoson, Raoelina Andriambololona +3 more·Dec 20, 2025
Recent developments in the unification of quantum mechanics and relativity have emphasized the necessity of generalizing classical phase space into a relativistic quantum phase space which is a framework that inherently incorporates the uncertainty p...
What is Stochastic Supervenience?
Youheng Zhang·Dec 20, 2025
Standard formulations of supervenience typically treat higher level properties as point valued facts strictly fixed by underlying base states. However, in many scientific domains, from statistical mechanics to machine learning, basal structures more ...
Hermitian Matrix Function Synthesis without Block-Encoding
Anuradha Mahasinghe, Kaushika De Silva, Xavier Cadet +3 more·Dec 20, 2025
Implementing polynomial functions of Hermitian matrices on quantum hardware is a foundational task in quantum computing, critical for accurate Hamiltonian simulation, quantum linear system solving, high-fidelity state preparation, machine learning ke...
Super-Poissonian Squeezed Light in the Ground State of Strongly Coupled Light-matter Systems
Cankut Tasci, Mohammad Hassan, Leon Orlov-Sullivan +2 more·Dec 20, 2025
Strong light-matter coupling enables hybrid states in which photonic and electronic degrees of freedom become correlated even in the ground state. While many-body effects in long-range dispersion interactions are known to reshape electronic propertie...