Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Hierarchy of quantum correlations in qubit-qutrit axially symmetric states
Venkat Abhignan, R. Muthuganesan·Jan 18, 2026
We investigate quantum correlations in a hybrid qubit-qutrit system subject to both axial and planar single-ion anisotropies, dipolar spin-spin interactions, and Dzyaloshinskii-Moriya (DM) coupling. Using Negativity, Measurement-Induced Non-locality ...
An Ontological Interpretation of Photon Wave-Particle Duality via Complex-Space Trajectories
Shiang-Yi Han, Ciann-Dong Yang·Jan 18, 2026
Wave particle duality remains a central interpretational challenge in quantum theory. In this work, we develop a trajectory-based description of photon dynamics formulated in an extended complex space within the relativistic quantum Hamilton Jacobi f...
Measuring unconventional causal structures in monitored dynamics
Hong-Yi Wang, Haifeng Tang, Xiao-Liang Qi·Jan 18, 2026
Causality underpins all logical reasoning. However, the causal structure in quantum processes can be far from intuitive, often differing from its classical counterpart in relativity, which is defined by the light cone. In particular, in systems with ...
Inverse Quantum Simulation for Quantum Material Design
Christian Kokail, Pavel E. Dolgirev, Rick van Bijnen +3 more·Jan 18, 2026
Quantum simulation provides a powerful route for exploring many-body phenomena beyond the capabilities of classical computation. Existing approaches typically proceed in the forward direction: a model Hamiltonian is specified, implemented on a progra...
Classical-Quantum Channel Resolvability Using Matrix Multiplicative Weight Update Algorithm
Koki Takahashi, Shun Watanabe·Jan 18, 2026
We study classical-quantum (C-Q) channel resolvability. C-Q channel resolvability has been proved by only random coding in the literature. In our previous study, we proved channel resolvability by deterministic coding, using multiplicative weight upd...
Maximum precision charging of multi-qubit quantum batteries
Davide Rinaldi, Radim Filip, Dario Gerace +1 more·Jan 17, 2026
Precision, robustness, and efficiency are crucial aspects in the design of quantum technologies. Here, we show how genuine quantum features, together with non-Gaussianity, can be the key elements to achieve the best of these three aspects during a qu...
Non-Trivial Topological Majorana Architectures: Mobius and Trefoil Band Topologies evaluated by Signal to Noise Ratio and Coherence time mesuarements
Spandan Das, Ennis Mawas·Jan 17, 2026
Topological quantum computing is expected to be less sensitive to noise because information is stored in global states rather than local features. To examine whether different device topologies show measurable differences, we study three geometries w...
Wave Phenomena and Wave Equations
Gerd Leuchs, Mojdeh S. Najafabadi·Jan 17, 2026
For any kind of wave phenomenon one can find ways to derive the respective dispersion relation from experimental observations and measurements. This dispersion relation determines the structure of the wave equation and thus characterizes the dynamics...
State Engineering via Nonlinear Interferometry with Linear Spectral Phases
Cody Charles Payne, Elaganuru Bashaiah, Markus Allgaier·Jan 17, 2026
Many protocols within quantum cryptography, communications, and computing require the ability to generate entangled states as well as spectral qudits. Nonlinear interferometry is a viable way to engineer these complex quantum states of light. However...
Single-shot Quantum State Classification via Nonlinear Quantum Amplification
Elif Cüce, Saeed A. Khan, Boris Mesits +2 more·Jan 17, 2026
Quantum amplifiers are intrinsically nonlinear systems whose performance limits are set by quantum mechanics. In quantum measurement, amplifier operation is conventionally optimized in the linear regime by maximizing signal-to-noise ratio, an objecti...
Physical probability in the Everett interpretation and Bell inequalities
Simon Saunders·Jan 17, 2026
I define a notion of locality LOC, closely modelled on the Bell principle of Local Causality, construed as the condition that single case probabilities cannot be modified by actions at spacelike separation. The new principle, like that of Bell, force...
End-to-End Fidelity Analysis of Quantum Circuit Optimization: From Gate-Level Transformations to Pulse-Level Control
Rylan Malarchick·Jan 17, 2026
We present a comprehensive analysis of quantum circuit fidelity across the full compilation stack, from high-level gate optimization through pulse-level control. Using a modular integration framework connecting a C++ circuit optimizer with Lindblad-b...
Quantum interference between spectral bandwidth mismatched photons
Jan Krzyżanowski, Jerzy Szuniewicz, Sanjay Kapoor +2 more·Jan 17, 2026
Two-photon interference is a cornerstone of photonic quantum technologies. However, its practical implementation in promising hybrid architectures is severely constrained by the requirement of photon wavepacket indistinguishability, in particular, in...
Measurement-induced crossover in quantum first-detection times
Giovanni Di Fresco, Aldo Coraggio, Alessandro Silva +1 more·Jan 17, 2026
The quantum first-detection problem concerns the statistics of the time at which a system, subject to repeated measurements, is observed in a prescribed target state for the first time. Unlike its classical counterpart, the measurement back action in...
Probing multiparameter quantum estimation in the process $e^+e^-\to J/ψ\to \text{B}\bar{\text{B}}$ at BESIII
Elhabib Jaloum, Mohamed Amazioug·Jan 17, 2026
The quantum Fisher information matrix (QFIM) is the cornerstone of multiparameter quantum metrology. In this work, we investigate multiparameter quantum estimation in baryon-antibaryon (B bar-B) pairs produced via the e+ e- -> J/psi -> B bar-B proces...
An unexpected theoretical structure that could explain quantum-mechanics postulates like the Born rule and the wave-function reduction
Léon Brenig, Marc Vincke·Jan 17, 2026
A unique postulate is shown to underly the whole quantum mechanics theory: the invariance of the Heisenberg uncertainty inequality under a group of special nonlinear gauge transformations (NLGT). With this postulate, the quantum mechanics of a free p...
Peres-type Criterion of Einstein-Podolsky-Rosen Steering for Two Qubits
Yu-Xuan Zhang, Jing-Ling Chen·Jan 17, 2026
Quantum nonlocality manifests in multipartite systems through entanglement, Bell's nonlocality, and Einstein-Podolsky-Rosen (EPR) steering. While Peres's positive-partial-transpose criterion provides a simple and powerful test for entanglement, a com...
Temperature effect on a kicked Tonks-Girardeau gas
Ang Yang, Yue Chen, Lei Ying·Jan 17, 2026
It is widely recognized that finite temperatures degrade quantum coherence and can induce thermalization. Here, we study the effect of finite temperature on a kicked Tonks--Girardeau gas, which is known to exhibit many--body dynamical localization an...
Contour-integral based quantum eigenvalue transformation: analysis and applications
Shan Jiang, Dong An·Jan 17, 2026
Eigenvalue transformations appear ubiquitously in scientific computation, ranging from matrix polynomials to differential equations, and are beyond the reach of the quantum singular value transformation framework. In this work, we study the efficienc...
QSPE: Enumerating Skeletal Quantum Programs for Quantum Library Testing
Jiaming Ye, Fuyuan Zhang, Shangzhou Xia +4 more·Jan 17, 2026
The rapid advancement of quantum computing has led to the development of various quantum libraries, empowering compilation, simulation, and hardware backend interfaces. However, ensuring the correctness of these libraries remains a fundamental challe...