Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Syntactic Structure, Quantum Weights
Kentaro Imafuku·Dec 9, 2025
Why do local actions and exponential Euclidean weights arise so universally in classical, statistical, and quantum theories? We offer a structural explanation from minimal constraints on finite descriptions of admissible histories. Assume that histor...
Ice cream, chocolate, random identification codes, quantum error correction -- and a truly warm heart
Christian Deppe·Dec 9, 2025
This text is written in remembrance of Vladimir (Volodia) Sidorenko, honoring his scientific work, his kindness, and the warm and humorous spirit he brought into the community.
Higher Josephson harmonics in a tunable double-junction transmon qubit
Ksenia Shagalov, David Feldstein-Bofill, Leo Uhre Jakobsen +11 more·Dec 9, 2025
Tunable Josephson harmonics open new avenues for qubit design. We demonstrate a superconducting circuit element consisting of a tunnel junction in series with a SQUID loop, yielding a Josephson potential whose harmonic content is strongly tunable by ...
Biothreat Benchmark Generation Framework for Evaluating Frontier AI Models III: Implementing the Bacterial Biothreat Benchmark (B3) Dataset
Gary Ackerman, Theodore Wilson, Zachary Kallenborn +7 more·Dec 9, 2025
The potential for rapidly-evolving frontier artificial intelligence (AI) models, especially large language models (LLMs), to facilitate bioterrorism or access to biological weapons has generated significant policy, academic, and public concern. Both ...
Heralded generation of a three-mode NOON state
Sukhjit P. Singh, Elnaz Bazzazi, Diego N. Bernal-García +8 more·Dec 9, 2025
Entangled states of photons form the foundation of quantum communication, computation, and metrology. Yet their generation remains fundamentally constrained: in the absence of intrinsic photon-photon interactions, the generation of such states is inh...
Biothreat Benchmark Generation Framework for Evaluating Frontier AI Models II: Benchmark Generation Process
Gary Ackerman, Zachary Kallenborn, Anna Wetzel +7 more·Dec 9, 2025
The potential for rapidly-evolving frontier artificial intelligence (AI) models, especially large language models (LLMs), to facilitate bioterrorism or access to biological weapons has generated significant policy, academic, and public concern. Both ...
Generation of high-OAM ultraviolet twisted light for RF-photoinjector applications
A. S. Dyatlov, D. M. Dolgintsev, V. V. Gerasimov +7 more·Dec 9, 2025
The generation of relativistic vortex electron beams via photoemission requires ultraviolet laser beams with well-controlled orbital angular momentum (OAM) and compatibility with radio-frequency (RF) photoinjector drive-laser systems. High-OAM vortex...
Benchmarking Gaussian and non-Gaussian input states with a hybrid sampling platform
Michael Stefszky, Kai-Hong Luo, Jan-Lucas Eickmann +22 more·Dec 9, 2025
The original boson sampling paradigm-consisting of multiple single-photon input states, a large interferometer, and multi-channel click detection-was originally proposed as a photonic route to quantum computational advantage. Its non-Gaussian resourc...
A Grover-compatible manifold optimization algorithm for quantum search
Zhijian Lai, Dong An, Jiang Hu +1 more·Dec 9, 2025
Grover's algorithm is a fundamental quantum algorithm that offers a quadratic speedup for the unstructured search problem by alternately applying physically implementable oracle and diffusion operators. In this paper, we reformulate the unstructured ...
Real-time heralded non-Gaussian teleportation resource-state generator
Joseph C. Chapman, Yanbao Zhang, Joseph M. Lukens +4 more·Dec 9, 2025
Quantum teleportation is a fundamental quantum communications primitive that requires an entangled resource state. In the continuous-variable regime, non-Gaussian entangled resources have been shown theoretically to improve teleportation fidelity com...
Decay of spin helices in XXZ quantum spin chains with single-ion anisotropy
Florian Lange, Frank Göhmann, Gerhard Wellein +1 more·Dec 9, 2025
Long-lived spin-helix states facilitate the study of non-equilibrium dynamics in quantum magnets. We consider the decay of transverse spin-helices in antiferromagnetic spin-$S$ XXZ chains with single-ion anisostropy. The spin-helix decay is observabl...
Universal recoverability of quantum states in tracial von-Neumann algebras
Saptak Bhattacharya·Dec 9, 2025
In this paper, we discuss a refinement of quantum data processing inequality for the sandwiched quasi-relative entropy $\mathcal{S}_2$ on a tracial von-Neumann algebra. The main result is a universal recoverability bound with the Petz recovery map, w...
Single-Step Phase-Engineered Pulse for Active Readout Cavity Reset in Superconducting Circuits
Ren-Ze Zhao, Ze-An Zhao, Tian-Le Wang +10 more·Dec 9, 2025
In a circuit QED architecture, we experimentally demonstrate a simple and hardware-efficient Single-Step Phase-Engineered (SSPE) pulse scheme for actively depopulating the readout cavity. The method appends a reset segment with tailored amplitude and...
Practical protein-pocket hydration-site prediction for drug discovery on a quantum computer
Daniele Loco, Kisa Barkemeyer, Andre R. R. Carvalho +1 more·Dec 9, 2025
Demonstrating the practical utility of Noisy Intermediate-Scale Quantum (NISQ) hardware for recurrent tasks in Computer-Aided Drug Discovery is of paramount importance. We tackle this challenge by performing three-dimensional protein pockets hydratio...
Constraint-oriented biased quantum search for general constrained combinatorial optimization problems
Sören Wilkening·Dec 9, 2025
We present a quantum algorithmic routine that extends the realm of Grover-based heuristics for tackling combinatorial optimization problems with arbitrary efficiently computable objective and constraint functions. Building on previously developed qua...
Deterministic Quantum Communication Between Fixed-Frequency Superconducting Qubits via Broadband Resonators
Takeaki Miyamura, Zhiling Wang, Kohei Matsuura +5 more·Dec 9, 2025
Quantum communication between remote chips is essential for realizing large-scale superconducting quantum computers. For such communication, itinerant microwave photons propagating through transmission lines offer a promising approach. However, demon...
Photonic Quantum-Accelerated Machine Learning
Markus Rambach, Abhishek Roy, Alexei Gilchrist +4 more·Dec 9, 2025
Machine learning is widely applied in modern society, but has yet to capitalise on the unique benefits offered by quantum resources. Boson sampling -- a quantum-interference based sampling protocol -- is a resource that is classically hard to simulat...
Quantum-classical correspondence in resonant and nonresonant Rabi-Stark model
Shangyun Wang, Songbai Chen, Jiliang Jing·Dec 9, 2025
Testing the correspondence principle in nonlinear quantum systems is a fundamental pursuit in quantum physics. In this paper, we employed mean field approximation theory to study the semiclassical dynamics in the Rabi-Stark model (RSM) and showed tha...
Discovering novel quantum dynamics with NISQ simulators
Pedram Roushan, Leigh S. Martin·Dec 9, 2025
Major technological advances of the past century are rooted in our understanding of quantum physics in the non-interacting limit. A central challenge today is to understand the behavior of complex quantum many-body systems, where interactions play an...
Programmable Open Quantum Systems
Mingrui Jing, Mengbo Guo, Lin Zhu +2 more·Dec 9, 2025
Programmability is a unifying paradigm for enacting families of quantum transformations via fixed processors and program states, with a fundamental role and broad impact in quantum computation and control. While there has been a shift from viewing op...