Papers
Live trends in quantum computing research, updated daily from arXiv.
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Sequential BP-based Decoding of QLDPC Codes
Mohsen Moradi, Salman Habib, V. Nourozi +1 more·Feb 13, 2026
Quantum low-density parity-check (QLDPC) codes are a leading approach to quantum error correction, yet conventional belief propagation (BP) decoders often perform poorly, primarily due to non-convergence exacerbated by stabilizer constraints, which i...
Dynamic Programming Principle and Stabilization for Mean-Field Quantum Filtering Systems
Sofiane Chalal, Nina H. Amini, Hamed Amini +1 more·Feb 12, 2026
Working within the quantum filtering framework, we establish a dynamic programming principle in an infinite-dimensional setting by embedding the state space into the Hilbert-Schmidt space. We then study a stabilization problem for continuously monito...
Probabilistic Design of Parametrized Quantum Circuits through Local Gate Modifications
Grier M. Jones, Aviraj Newatia, Alexander Lao +3 more·Feb 12, 2026
Within quantum machine learning, parametrized quantum circuits provide flexible quantum models, but their performance is often highly task-dependent, making manual circuit design challenging. Alternatively, quantum architecture search algorithms have...
Challenge-Response Quantum Reinforcement Learning with Application to Quantum-Assisted Authentication
Jawaher Kaldari, Saif Al-Kuwari·Feb 12, 2026
Quantum reinforcement learning (QRL) has emerged as a promising research direction that integrates quantum information processing into reinforcement learning frameworks. While many existing QRL studies apply quantum agents to classical environments, ...
Temporal Framework for Causality-Preserving Scheduling of Measurements in Quantum Networks
Jakob Kaltoft Søndergaard, René Bødker Christensen, Petar Popovski·Feb 12, 2026
Distributed quantum protocols rely on classical feedforward information to process measurement outcomes, but heterogeneous hardware and uncertain local timing can make the causal order of measurements ambiguous when inferred solely from arrival times...
Tensor Network Generator-Enhanced Optimization for Traveling Salesman Problem
Ryo Sakai, Chen-Yu Liu·Feb 12, 2026
We present an application of the tensor network generator-enhanced optimization (TN-GEO) framework to address the traveling salesman problem (TSP), a fundamental combinatorial optimization challenge. Our approach employs a tensor network Born machine...
Information lattice approach to the metal-insulator transition
William Skoglund, Elton Giacomelli, Yiqi Yang +2 more·Feb 12, 2026
Correlation functions and correlation lengths are frequently used to describe phase transitions in quantum systems, but they require an explicit choice of observables. The recently introduced information lattice instead provides an observable-indepen...
Accelerating Feedback-based Algorithms for Quantum Optimization Using Gradient Descent
Masih Mozakka, Mohsen Heidari·Feb 12, 2026
Feedback-based methods have gained significant attention as an alternative training paradigm for the Quantum Approximate Optimization Algorithm (QAOA) in solving combinatorial optimization problems such as MAX-CUT. In particular, Quantum Lyapunov Con...
Magic and Wormholes in the Sachdev-Ye-Kitaev Model
Valérie Bettaque, Brian Swingle·Feb 12, 2026
Any quantum state is fully specified by the expectation values of a complete set of Hermitian operators. For a system of Majorana fermions, such as the Sachdev-Ye-Kitaev (SYK) model, this set of observables can be taken to be all possible strings of ...
Reconstruction of finite Quasi-Probability and Probability from Principles: The Role of Syntactic Locality
Jacopo Surace·Feb 12, 2026
Quasi-probabilities appear across diverse areas of physics, but their conceptual foundations remain unclear: they are often treated merely as computational tools, and operations like conditioning and Bayes' theorem become ambiguous. We address both i...
Consistent inclusion of triple substitutions within a coupled cluster based static quantum embedding theory
Avijit Shee, Fabian M. Faulstich, K. Birgitta Whaley +2 more·Feb 12, 2026
We incorporate a solver for the fragment problem with accuracy beyond coupled cluster singles and doubles (CCSD) into the previously proposed static embedding framework, MPCC. To this end, we employ a CCSDT solver for the fragment subsystem. For the ...
Certification of linear optical quantum state preparation
Riko Schadow, Naomi Spier, Stefan N. van den Hoven +6 more·Feb 12, 2026
Certification is important to guarantee the correct functioning of quantum devices. A key certification task is verifying that a device has produced a desired output state. In this work, we study this task in the context of photonic platforms, where ...
Repulsive Gravitational Force as a Witness of the Quantum Nature of Gravity
Pablo L. Saldanha, Chiara Marletto, Vlatko Vedral·Feb 12, 2026
We show that a single spatially superposed 'source' mass acting on a 'probe' matter wavepacket can reveal the quantum nature of the gravitational field. For this we use a specific state preparation and measurement of the superposed source mass, inclu...
Observing dissipationless flow of an impurity in a strongly repulsive quantum fluid
Milena Horvath, Sudipta Dhar, Elisabeth Wybo +6 more·Feb 12, 2026
The frictionless motion of an object through a fluid medium is commonly viewed as a hallmark of superfluidity. According to Landau, kinematic constraints prohibit superfluid behavior in one-dimensional (1D) bosonic systems. Here, using ultracold atom...
Post-measurement states are (very) useful for measurement discrimination
Charbel Eid, Marco Túlio Quintino·Feb 12, 2026
The standard approach to quantum measurement discrimination is to perform the given unknown measurement on a probe state, possibly entangled with an auxiliary system, and make a decision based on the measurement outcome obtained. In this work, we go ...
Non-Abelian Quantum Low-Density Parity Check Codes and Non-Clifford Operations from Gauging Logical Gates via Measurements
Maine Christos, Chiu Fan Bowen Lo, Vedika Khemani +1 more·Feb 12, 2026
In this work, we introduce constructions for non-Abelian qLDPC codes obtained by gauging transversal Clifford gates using measurement and feedback. In particular, we identify two qualitatively different approaches to gauging qLDPC codes to obtain the...
Phase Estimation from Amplitude Collapse in Correlated Matter-Wave Interference
Daniel Derr, Dominik Pfeiffer, Ludwig Lind +2 more·Feb 12, 2026
Operating matter-wave interferometers as quantum detectors for fundamental physics or inertial sensors in real-world applications with unprecedented accuracies relies on noise rejection, often implemented by correlating two sensors. Such sensors can ...
Quantum-Coherent Thermodynamics: Leaf Typicality via Minimum-Variance Foliation
Maurizio Fagotti·Feb 12, 2026
Equilibrium statistical ensembles commute with the Hamiltonian and thus carry no coherence in the energy eigenbasis. We develop a thermodynamic framework in which energy fluctuations can retain genuinely quantum-coherent contributions. We foliate sta...
A Framework for Spatial Quantum Sensing
Luís Bugalho, Yasser Omar, Damian Markham·Feb 12, 2026
Analytical and algebraic geometry are valuable tools for dealing with problems involving analytical functions and polynomials. In what we connote as spatial quantum sensing the goal is, given an underlying field and a set of quantum sensors interroga...
Charged moments and symmetry-resolved entanglement from Ballistic Fluctuation Theory
Giorgio Li, Léonce Dupays, Paola Ruggiero·Feb 12, 2026
The charged moments of a reduced density matrix provide a natural starting point for deriving symmetry-resolved Rényi and entanglement entropies, which quantify how entanglement is distributed among symmetry sectors in the presence of a global intern...