Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Density of scattering resonances in a disordered system
M. S. Kurilov, P. M. Ostrovsky·Dec 21, 2025
Reflection of particles from a disordered or chaotic medium is characterized by a scattering matrix that can be represented as a superposition of resonances. Each resonance corresponds to an eigenstate inside the medium and has a width related to the...
Identification and Optimization of Accurate Spin Models for Open-Shell Carbon Ladders with Matrix Product States
Andoni Agirre, Thomas Frederiksen, Geza Giedke +1 more·Dec 21, 2025
Open-shell nanographenes offer a controlled setting to study correlated magnetism emerging from $π$-electron systems. We analyze oligo(indenoindene) molecules, non-bipartite carbon ladders whose tight-binding spectra feature a gapped, weakly dispersi...
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...
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...
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...
Hermitian Matrix Function Synthesis without Block-Encoding
Anuradha Mahasinghe, Kaushika De Silva, Xavier Cadet +3 more·Dec 20, 2025
Implementing arbitrary 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 ker...
Benchmarking the Impact of Active Space Selection on the VQE Pipeline for Quantum Drug Discovery
Zhi Yin, Xiaoran Li, Zhupeng Han +6 more·Dec 20, 2025
Quantum computers promise scalable treatments of electronic structure, yet applying variational quantum eigensolvers (VQE) on realistic drug-like molecules remains constrained by the performance limitations of near-term quantum hardwares. A key strat...
Crosstalk Dispersion and Spatial Scaling in Superconducting Qubit Arrays
Mohammed Alghadeer, Simon Pettersson Fors, Shuxiang Cao +5 more·Dec 20, 2025
Crosstalk between qubits fundamentally limits the scalability of quantum processors, necessitating physics-based models that can handle the complexity of large qubit arrays. Here, we develop a comprehensive theoretical and experimental framework that...
QLink: Quantum-Safe Bridge Architecture for Blockchain Interoperability
Joao Vitor Barros Da Silva, Arsh Gupta, Madhusudan Singh·Dec 20, 2025
Secure interoperability across heterogeneous blockchains remains one of the most pressing challenges in Web3 with existing bridge protocols vulnerable to both classical exploits and emerging quantum threats. This paper introduces QLink a quantum-safe...
Exploring polymer classification with a hybrid single-photon quantum approach
Alexandrina Stoyanova, Bogdan Penkovsky·Dec 19, 2025
Polymers exhibit complex architectures and diverse properties that place them at the center of contemporary research in chemistry and materials science. As conventional computational techniques, even multi-scale ones, struggle to capture this complex...
Simulation of depolarizing channel exploring maximally non separable spin-orbit mode
G. Tiago, V. S. Lamego, M. H. M. Passos +2 more·Dec 19, 2025
The Depolarizing channel is one of the most important noise models and constitutes a reliable benchmark for the quantum information field. In this work, we present a simple way to emulate a Depolarizing channel by exploring a maximally non separable ...
Quantum simulation of deep inelastic scattering in the Schwinger model
Kazuki Ikeda, Zhong-Bo Kang, Dmitri E. Kharzeev +1 more·Dec 19, 2025
Hadronic tensors encode the nonperturbative structure of hadrons probed in deep inelastic scattering (DIS), yet their direct evaluation requires real-time evolution that presents a challenge for traditional Euclidean lattice approaches. In this work,...
Simulation of topological superconductors and their competing orders using photon-mediated interactions
Anjun Chu, Joyce Kwan, Eric Yilun Song +3 more·Dec 19, 2025
Realizing and controlling the unconventional pairing featured by topological superconductors remains a central challenge. We introduce a cavity QED quantum simulator that engineers competing chiral $p_x+ip_y$ and $d_{x^2-y^2}+id_{xy}$ orders by tailo...
Adiabatic preparation of many-body quantum states: getting the beginning and ending right
Emil T. M. Pedersen, Freek Witteveen, Klaus Mølmer +1 more·Dec 19, 2025
We present numerical calculations, and simulations performed on a Rydberg atom quantum simulator, of the adiabatic evolution of many-body quantum systems around a quantum phase transition. We demonstrate that the end-to-end transfer error, for a give...
Digital-Analog Quantum Computing with Qudits
Alatz Alvarez-Ahedo, Mikel Garcia de Andoin, Mikel Sanz·Dec 19, 2025
Digital-analog quantum computing with two-level systems is a computational paradigm that combines an analog Hamiltonian with single-qubit gates to achieve universality. We extend this framework to $d$-level systems by conjugating an analog Hamiltonia...
Refrigeration of a 1D gas of microwave photons
Lukas Schamriß, Louis Garbe, Peter Rabl·Dec 19, 2025
We discuss a conceptually simple scheme for cooling a one dimensional gas of microwave photons in a superconducting transmission line. By shunting one end of the transmission line by a nonlinear Josephson element, we show how a cooling mechanism can ...
Single-Photon Scattering in a Waveguide Coupled to a Lossy or Gain Giant Atom
Yu Xin, Jia-Ming Zhang, Bing Chen·Dec 19, 2025
This work investigates single-photon scattering in a one-dimensional coupled-resonator waveguide coupled to a giant atom with a complex on-site energy. Within the generalized projection operator formalism, we derive analytical expressions for the sca...
Rydberg Atomic RF Sensor-based Quantum Radar
Sourav Banerjee, Neel Kanth Kundu·Dec 19, 2025
Rydberg atom-based RF sensors offer distinct advantages over conventional dipole antennas for electric field detection. This paper presents a system model and performance analysis of a Rydberg atom-based quantum radar, which employs optical readout v...
The Standard Model Symmetry and Qubit Entanglement
Jochen Szangolies·Dec 19, 2025
Research at the intersection of quantum gravity and quantum information theory has seen significant success in describing the emergence of spacetime and gravity from quantum states whose entanglement entropy approximately obeys an area law. In a diff...
Towards Quantum Advantage in Sparsified Bosonic SYK Models
Vaibhav Gautam, Atsushi Matsuo, Masahito Yamazaki·Dec 19, 2025
We advocate the sparsification of bosonic SYK models as a promising arena for the exploration of quantum advantage. We initiate the study of quantum simulations of the models, both in classical simulators and on quantum devices implemented using supe...