Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Temperature as a Dynamically Maintained Steady State: Photonic Mechanisms, Maintenance Cost, and the Limits of the Infinite-Reservoir Idealization
David Vaknin·Jan 29, 2026
Classical thermodynamics treats temperature as a state variable characterizing systems in equilibrium with idealized infinite reservoirs. We argue that this framing, while computationally exact, obscures an essential physical reality: any system at f...
Accelerating De Novo Genome Assembly via Quantum-Assisted Graph Optimization with Bitstring Recovery
Jaya Vasavi Pamidimukkala, Himanshu Sahu, Ashwini Kannan +3 more·Jan 29, 2026
Genome sequencing is essential to decode genetic information, identify organisms, understand diseases and advance personalized medicine. A critical step in any genome sequencing technique is genome assembly. However, de novo genome assembly, which in...
Andreev spin qubits based on the helical edge states of magnetically doped two-dimensional topological insulators
Edoardo Latini, Fausto Rossi, Fabrizio Dolcini·Jan 29, 2026
We show that Andreev spin qubits can be realized in a Josephson junction based on the helical edge states of a two-dimensional topological insulator (quantum spin Hall system) proximized by superconducting films, in the presence of magnetic doping. W...
Probing Entanglement and Symmetries in Random States Using a Superconducting Quantum Processor
Jia-Nan Yang, Lata Kh Joshi, Filiberto Ares +3 more·Jan 29, 2026
Quantum many-body systems display an extraordinary degree of complexity, yet many of their features are universal: they depend not on microscopic details, but on a few fundamental physical aspects such as symmetries. A central challenge is to distill...
Quantum fluctuations in hydrodynamics and quantum long-time tails
Akash Jain·Jan 29, 2026
We construct a quantum Schwinger-Keldysh (SK) effective field theory for the diffusive hydrodynamics of a conserved scalar field. Quantum corrections within the SK framework are guided by fluctuation-dissipation relations, enforced via a dynamical Ku...
Azimuthal angular entanglement between decaying particles in ultra-peripheral ion collisions
Spencer R. Klein·Jan 29, 2026
Ultra-peripheral collisions (UPCs) involving relativistic heavy ions are a unique laboratory to study quantum correlations. The intense electromagnetic fields generate high rates of photonuclear interactions, including events involving multiple photo...
Designing quantum technologies with a quantum computer
Juan Naranjo, Thi Ha Kyaw, Gaurav Saxena +2 more·Jan 29, 2026
Interacting spin systems in solids underpin a wide range of quantum technologies, from quantum sensors and single-photon sources to spin-defect-based quantum registers and processors. We develop a quantum-computer-aided framework for simulating such ...
Thermodynamics of linear open quantum walks
Pedro Linck Maciel, Nadja Kolb Bernardes·Jan 29, 2026
Open quantum systems interact with their environment, leading to nonunitary dynamics. We investigate the thermodynamics of linear Open Quantum Walks (OQWs), a class of quantum walks whose dynamics is entirely driven by the environment. We define an e...
Photonic Links for Spin-Based Quantum Sensors
M. Reefaz Rahman, Karsten Schnier, Ryan Goldsmith +4 more·Jan 29, 2026
A growing variety of optically accessible spin qubits have emerged in recent years as key components for quantum sensors, qubits, and quantum memories. However, the scalability of conventional spin-based quantum architectures remains limited by direc...
Machine learning with minimal use of quantum computers: Provable advantages in Learning Under Quantum Privileged Information (LUQPI)
Vasily Bokov, Lisa Kohl, Sebastian Schmitt +1 more·Jan 29, 2026
Quantum machine learning (QML) is often listed as a promising candidate for useful applications of quantum computers, in part due to numerous proofs of possible quantum advantages. A central question is how small a role quantum computers can play whi...
Hierarchy of discriminative power and complexity in learning quantum ensembles
Jian Yao, Pengtao Li, Xiaohui Chen +1 more·Jan 29, 2026
Distance metrics are central to machine learning, yet distances between ensembles of quantum states remain poorly understood due to fundamental quantum measurement constraints. We introduce a hierarchy of integral probability metrics, termed MMD-$k$,...
Fabrication effects on Niobium oxidation and surface contamination in Niobium-metal bilayers using X-ray photoelectron spectroscopy
Tathagata Banerjee, Maciej W. Olszewski, Valla Fatemi·Jan 29, 2026
Superconducting resonators and qubits are limited by dielectric losses from surface oxides. Surface oxides are mitigated through various strategies such as the addition of a metal capping layer, surface passivation, and acid processing. In this study...
Entropy production versus memory effects in two-level open quantum systems
Guillaume Théret, Dominique Sugny, Camille L. Latune·Jan 29, 2026
We compare several definitions of entropy production rate introduced in the literature from a large variety of situations and motivations, and then analyze their relations with memory effects. Considering a relevant experimental example of a qubit in...
Bound-state-free Förster resonant shielding of strongly dipolar ultracold molecules
Reuben R. W. Wang·Jan 29, 2026
We propose a method to suppress collisional loss in strongly dipolar, rotationally excited ultracold molecules using a combination of static (dc) and microwave (ac) electric fields. By tuning two excited pair molecular rotational states into a Förste...
A scalable quantum-enhanced greedy algorithm for maximum independent set problems
Elisabeth Wybo, Jami Rönkkö, Olli Hirviniemi +2 more·Jan 29, 2026
We investigate a hybrid quantum-classical algorithm for solving the Maximum Independent Set (MIS) problem on regular graphs, combining the Quantum Approximate Optimization Algorithm (QAOA) with a minimal degree classical greedy algorithm. The method ...
Rapid high-temperature initialisation and readout of spins in silicon with 10 THz photons
Aidan G. McConnell, Nils Dessmann, Wojciech Adamczyk +6 more·Jan 29, 2026
Each cycle of a quantum computation requires a quantum state initialisation. For semiconductor-based quantum platforms, initialisation is typically performed via slow microwave processes and usually requires cooling to temperatures where only the low...
Defect Relative Entropy
Mostafa Ghasemi·Jan 29, 2026
We introduce the concept of \textit{defect relative entropy} as a measure of distinguishability within the space of defects. We compute the defect relative entropy for conformal/topological defects, deriving a universal formula in conformal field the...
Quotient geometry of tensor ring decomposition
Bin Gao, Renfeng Peng, Ya-xiang Yuan·Jan 29, 2026
Differential geometries derived from tensor decompositions have been extensively studied and provided the foundations for a variety of efficient numerical methods. Despite the practical success of the tensor ring (TR) decomposition, its intrinsic geo...
Entanglement-Assisted Bosonic MAC: Achievable Rates and Covert Communication
Yu-Chen Shen, Matthieu R. Bloch·Jan 29, 2026
We consider the problem of covert communication over the entanglement-assisted (EA) bosonic multiple access channel (MAC). We derive a closed-form achievable rate region for the general EA bosonic MAC using high-order phase-shift keying (PSK) modulat...
A Bravyi-König theorem for Floquet codes generated by locally conjugate instantaneous stabiliser groups
Jelena Mackeprang, Jonas Helsen·Jan 29, 2026
The Bravyi-König (BK) theorem is an important no-go theorem for the dynamics of topological stabiliser quantum error correcting codes. It states that any logical operation on a $D$-dimensional topological stabiliser code that can be implemented by a ...