Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Dynamical quantum phase transitions through the lens of mode dynamics
Akash Mitra, Shashi C. L. Srivastava·Mar 5, 2026
We study the mode dynamics of a generic quadratic fermionic Hamiltonian under a sudden quench protocol in momentum space. Modes with zero energy at any given time, $t$, are referred to as dynamical critical modes. Among all zero-energy modes, spin-fl...
Gauge-string duality, monomial bases and graph determinants
Garreth Kemp, Sanjaye Ramgoolam·Mar 5, 2026
Questions at the intersection of the AdS/CFT correspondence and quantum information theory motivate the study of projectors in sequences of subalgebras of finite-dimensional commutative associative semisimple algebras $\mathcal{A}$, obtained by incre...
Robust and optimal control of open quantum systems
Zi-Jie Chen, Hongwei Huang, Lida Sun +9 more·Mar 5, 2026
Recent advancements in quantum technologies have highlighted the importance of mitigating system imperfections, including parameter uncertainties and decoherence effects, to improve the performance of experimental platforms. However, most of the prev...
False traps on quantum-classical optimization landscapes
Xiaozhen Ge, Shuming Cheng, Guofeng Zhang +1 more·Mar 5, 2026
Optimization is ubiquitous in quantum information science and technology, however, the corresponding optimization landscape can encounter false traps, i.e., local but not global optima, likely to prevent used optimizers from finding optimal solutions...
Design and Analysis of an Improved Constrained Hypercube Mixer in Quantum Approximate Optimization Algorithm
Arkadiusz Wołk, Karol Capała, Katarzyna Rycerz·Mar 5, 2026
The Quantum Approximate Optimization Algorithm (QAOA) is expected to offer advantages over classical approaches when solving combinatorial optimization problems in the Noisy Intermediate-Scale Quantum (NISQ) era. In its standard formulation, however,...
Security bounds for unidimensional discrete-modulated CV-QKD: a Gaussian extremality approach
John A. Mora Rodríguez, Maron F. Anka, Leonardo J. Pereira +2 more·Mar 5, 2026
Unidimensional (1D) Gaussian-modulated continuous-variable quantum key distribution protocols have been proposed as a way to simplify implementation and reduce costs through single-quadrature modulation, requiring only one modulator while maintaining...
Machine Learning the Strong Disorder Renormalization Group Method for Disordered Quantum Spin Chains
A. Ustyuzhanin, J. Vahedi, S. Kettemann·Mar 5, 2026
We train machine learning algorithms to infer the entanglement structure of disordered long-range interacting quantum spin chains by learning from the strong disorder renormalisation group (SDRG) method. The system consists of $S=1/2$-quantum spins c...
Constant-Depth Quantum Imaginary Time Evolution Using Dynamic Fan-out Circuits
Albert Lund, Erika Magnusson, Werner Dobrautz +1 more·Mar 5, 2026
Dynamic quantum circuits combine mid-circuit measurement with classical feed-forward, enabling circuit constructions with reduced entangling-gate depth. Here, we investigate their use in Quantum Imaginary Time Evolution (QITE), where circuit depth an...
Simulating Lattice Gauge Theories with Virtual Rishons
David Rogerson, João Barata, Robert M. Konik +2 more·Mar 5, 2026
Classical tensor network and hybrid quantum-classical algorithms are promising candidates for the investigation of real-time properties of lattice gauge theories. We develop here a novel framework which enforces gauge symmetry via a quantum-link virt...
Advantage of flexible catalysis for entanglement and quantum thermodynamics
Jingsong Ao, Aby Philip, Alexander Streltsov·Mar 5, 2026
Understanding the fundamental limits of state convertibility is crucial for establishing the boundaries of quantum information processing and thermodynamic efficiency. While auxiliary systems, catalysts, can facilitate otherwise impossible transforma...
Quantum advantages for syndrome-aware noisy logical observable estimation
Kento Tsubouchi, Hyukgun Kwon, Liang Jiang +1 more·Mar 5, 2026
Recent progress in fault-tolerant quantum computing suggests that leveraging error-syndrome information at the logical layer can substantially improve performance, including the estimation of logical observables from noisy states. In this work, based...
Standardizing Access to Heterogeneous Quantum Backends: A Case Study on Cloud Service Integration with QDMI
Patrick Hopf, Sebastian Stern, Robert Wille +1 more·Mar 5, 2026
With an increasingly diverse portfolio of quantum backends, the adoption of standardized interfaces has become a key prerequisite for scalable access and interoperability within quantum software stacks. The Quantum Device Management Interface (QDMI) ...
Classical shadows for non-iid quantum sources
Leonardo Zambrano·Mar 5, 2026
Classical shadow tomography has emerged as a powerful framework for predicting properties of quantum many-body systems with favorable sample complexity. Standard theoretical guarantees, however, rely on the assumption that experimental rounds are ind...
Emergence of Turbulence in a counterflow geometry of 2D Polariton Quantum Fluids
Louis Depaepe, Kayce Ouahrouche, Alberto Amo +1 more·Mar 5, 2026
We numerically investigate the nonlinear dynamics of a two-dimensional exciton-polariton quantum fluid coherently driven by two counter-propagating laser beams. Using an exciton-photon coupled driven-dissipative Gross-Pitaevskii framework, we identif...
Double-sphere enhanced optomechanical spectroscopy constrains symmetron dark energy
Jiawei Li, Ka-Di Zhu·Mar 5, 2026
Screened scalar fields such as the symmetron provide a viable description of dark energy yet their laboratory detection remains challenging. We propose an optomechanical scheme to constrain symmetron interactions using two optically levitated nanosph...
Parsimonious Quantum Low-Density Parity-Check Code Surgery
Andrew C. Yuan, Alexander Cowtan, Zhiyang He +2 more·Mar 5, 2026
Quantum code surgery offers a flexible, low-overhead framework for executing logical measurements within quantum error-correcting codes. It encompasses several fault-tolerant logical computation schemes, including parallel surgery, universal adapters...
Quantum field theory for classical fields
Christof Wetterich·Mar 5, 2026
For classical field theories with probabilistic initial conditions the classical field observables are an idealization. Their arbitrarily precise values poorly reflect the characteristic uncertainty in the presence of substantial fluctuations. We pro...
Interplay of internal and external coupling phases in cavity magnonics: from level repulsion to attraction
Guillaume Bourcin, Mufti Avicena, Vincent Vlaminck +2 more·Mar 5, 2026
We experimentally validate a unified input--output model that incorporates internal and external coupling phases in a room-temperature cavity magnonic system. By explicitly accounting for phase effects, the model provides full control of interference...
Autocorrelation effects in a stochastic-process model for decision making via time series
Tomoki Yamagami, Mikio Hasegawa, Takatomo Mihana +2 more·Mar 5, 2026
Decision makers exploiting photonic chaotic dynamics obtained by semiconductor lasers provide an ultrafast approach to solving multi-armed bandit problems by using a temporal optical signal as the driving source for sequential decisions. In such syst...
Uniform process tensor approach for the calculation of multi-time correlation functions of non-Markovian open systems
Matteo Garbellini, Konrad Mickiewicz, Valentin Link +2 more·Mar 5, 2026
The process tensor framework to open quantum systems provides the most general description of multi-time correlations in non-Markovian quantum dynamics. A compressed representation of a process tensor in terms of matrix product operators (MPO) can be...