Papers
Live trends in quantum computing research, updated daily from arXiv.
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Quantum Search in Superposed Quantum Lattice Gas Automata and Lattice Boltzmann Systems
Călin A. Georgescu, Matthias Möller·Oct 15, 2025
As the scope of Computational Fluid Dynamics (CFD) grows to encompass ever larger problem scales, so does the interest in whether quantum computing can provide an advantage. In recent years, Quantum Lattice Gas Automata (QLGA) and Quantum Lattice Bol...
Decoding Correlated Errors in Quantum LDPC Codes
Arshpreet Singh Maan, Francisco-Garcia Herrero, Alexandru Paler +1 more·Oct 15, 2025
We introduce a decoding framework for correlated errors in quantum LDPC codes under circuit-level noise. The core of our approach is a graph augmentation and rewiring for interference (GARI) method, which modifies the correlated detector error model ...
Qutrits for physics at the LHC
Miranda Carou Laiño, Veronika Chobanova, Miriam Lucio Martínez·Oct 15, 2025
The identification of anomalous events, not explained by the Standard Model of particle physics, and the possible discovery of exotic physical phenomena pose significant theoretical, experimental and computational challenges. The task will intensify ...
Continuous-variable photonic quantum extreme learning machines for fast collider-data selection
Benedikt Maier, Michael Spannowsky, Simon Williams·Oct 15, 2025
We study continuous-variable photonic quantum extreme learning machines as fast, low-overhead front-ends for collider data processing. Data is encoded in photonic modes through quadrature displacements and propagated through a fixed-time Gaussian qua...
Impact of irradiation conditions on the magnetic field sensitivity of spin defects in hBN nano flakes
Saksham Mahajan, Ravi Kumar, Aferdita Xhameni +8 more·Oct 15, 2025
We study $V_{\mathrm{B}}^-$ centres generated by helium focused ion beam (FIB) irradiation in thin ($\sim$70 nm) hBN nanoflakes, in order to investigate the effect of implantation conditions on the key parameters that influence the magnetic field sen...
A Rigorous Quantum Framework for Inequality-Constrained and Multi-Objective Binary Optimization: Quadratic Cost Functions and Empirical Evaluations
Sebastian Egginger, Kristina Kirova, Sonja Bruckner +2 more·Oct 15, 2025
The prospect of quantum solutions for complicated optimization problems is contingent on mapping the original problem onto a tractable quantum energy landscape, e.g. an Ising-type Hamiltonian. Subsequently, techniques like adiabatic optimization, qua...
De Sitter holographic complexity from Krylov complexity in DSSYK
Michal P. Heller, Fabio Ori, Jacopo Papalini +2 more·Oct 15, 2025
We utilize the recent connection between the high energy limit of the double-scaled SYK model and two-dimensional de Sitter solutions of sine dilaton gravity to identify the length of a family of geodesics spanned between future and past infinities w...
A Rigorous Quantum Framework for Inequality-Constrained and Multi-Objective Binary Optimization
Sebastian Egginger, Kristina Kirova, Sonja Bruckner +2 more·Oct 15, 2025
Encoding combinatorial optimization problems into physically meaningful Hamiltonians with tractable energy landscapes forms the foundation of quantum optimization. Numerous works have studied such efficient encodings for the class of Quadratic Uncons...
Sequential Quantum Measurements and the Instrumental Group Algebra
Christopher S. Jackson·Oct 15, 2025
Many of the most fundamental observables | position, momentum, phase-point, and spin-direction | cannot be measured by an instrument that obeys the orthogonal projection postulate. Continuous-in-time measurements provide the missing theoretical frame...
Towards gravimetry enhancement with squeezed states
Oziel R. de Araujo, Lucas S. Marinho, Jonas F. G. Santos +1 more·Oct 15, 2025
We investigate the sensitivity of gravitational acceleration estimation using squeezed probe states in a quantum metrology framework. In particular, we analyze how the squeezing phase, beyond its amplitude, affects the attainable precision. We show t...
Temporal Entanglement Transitions in the Periodically Driven Ising Chain
Karun Gadge, Abhinav Prem, Rishabh Jha·Oct 15, 2025
Periodically driven quantum systems can host non-equilibrium phenomena without static analogs, including in their entanglement dynamics. Here, we discover $temporal$ $entanglement$ $transitions$ (TET) in a Floquet spin chain, which correspond to a qu...
Quantum State Designs via Magic Teleportation
Hugo Lóio, Guglielmo Lami, Lorenzo Leone +3 more·Oct 15, 2025
We investigate how non-stabilizer resources enable the emergence of quantum state designs within the projected ensemble. Starting from initial states with finite magic and applying resource-free Clifford circuits to scramble them, we analyze the ense...
Decoherence in high energy collisions as renormalization group flow
Jiayin Gu, Shi-Jia Lin, Ding Yu Shao +2 more·Oct 15, 2025
The unification of quantum information science and collider physics is opening a new frontier in high-energy experiments, making a systematic understanding of decoherence a critical challenge. We present a framework to systematically compute spin dec...
Diffeomorphism invariant tensor networks for 3d gravity
Vijay Balasubramanian, Charlie Cummings·Oct 15, 2025
Tensor networks prepare states that share many features of states in quantum gravity. However, standard constructions are not diffeomorphism invariant and do not support an algebra of non-commuting area operators. Recently, analogues of both problems...
Universal Growth of Krylov Complexity Across A Quantum Phase Transition
András Grabarits, Adolfo del Campo·Oct 15, 2025
We study the statistical properties of the spread complexity in the Krylov space of quantum systems driven across a quantum phase transition. Using the diabatic Magnus expansion, we map the evolution to an effective one-dimensional hopping model. For...
Digitized Counterdiabatic Quantum Feature Extraction
Anton Simen, Carlos Flores-Garrigós, Murilo Henrique De Oliveira +6 more·Oct 15, 2025
We introduce a Hamiltonian-based quantum feature extraction method that generates complex features via the dynamics of $k$-local many-body spins Hamiltonians, enhancing machine learning performance. Classical feature vectors are embedded into spin-gl...
Observation of area laws in an interacting quantum field simulator
Maciej T. Jarema, Mohammadamin Tajik, Jörg Schmiedmayer +2 more·Oct 15, 2025
Information shared between parties quantifies their correlation. The encoding of correlations across space and time characterises the structure, history, and interactions of systems. One of the most fundamental properties that emerges from studies of...
Are Randomized Quantum Linear Systems Solvers Practical?
Siddharth Hariprakash, Roel Van Beeumen, Katherine Klymko +1 more·Oct 15, 2025
Randomized quantum algorithms have been proposed in the context of quantum simulation and quantum linear algebra with the goal of constructing shallower circuits than methods based on block encodings. While the algorithmic complexities of such random...
Reduced constant-cost implementations of Clifford operations using global interactions
Jonathan Nemirovsky, Lee Peleg, Amit Ben Kish +1 more·Oct 15, 2025
We investigate quantum circuits built from arbitrary single-qubit operations combined with programmable all-to-all multiqubit entangling gates that are native to, among other systems, trapped-ion quantum computing platforms. We report a constant-cost...
Breaking of scale invariance in a strongly dipolar 2D Bose gas
Haoting Zhen, Yifei He, Sampriti Saha +4 more·Oct 15, 2025
Two-dimensional (2D) dipolar atomic gases present unique opportunities for exploring novel quantum phases due to their anisotropic and long-range interactions. However, the behavior of strongly dipolar Bose gases in 2D remains unclear, especially whe...