Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Algorithms for Computing the Petz-Augustin Capacity
Chun-Neng Chu, Wei-Fu Tseng, Yen-Huan Li·Jan 10, 2026
We propose the first algorithms with non-asymptotic convergence guarantees for computing the Petz-Augustin capacity, which generalizes the channel capacity and characterizes the optimal error exponent in classical-quantum channel coding. This capacit...
Emission of time-ordered photon pairs from a single polaritonic Bogoliubov mode
Ferdinand Claude, Yueguang Zhou, Sylvain Ravets +8 more·Jan 10, 2026
In many-body quantum systems, interactions drive the emergence of correlations that are at the heart of the most intriguing states of matter. A remarkable example is the case of weakly interacting bosonic systems, whose ground state is a squeezed vac...
VIPER Strike: Defeating Visual Reasoning CAPTCHAs via Structured Vision-Language Inference
Minfeng Qi, Dongyang He, Qin Wang +1 more·Jan 10, 2026
Visual Reasoning CAPTCHAs (VRCs) combine visual scenes with natural-language queries that demand compositional inference over objects, attributes, and spatial relations. They are increasingly deployed as a primary defense against automated bots. Exis...
Informationally Complete Distributed Metrology Without a Shared Reference Frame
Hua-Qing Xu, Gong-Chu Li, Xu-Song Hong +6 more·Jan 10, 2026
In quantum information processing, implementing arbitrary preparations and measurements on qubits necessitates precise information to identify a specific reference frame (RF). In space quantum communication and sensing, where a shared RF is absent, t...
Continual Quantum Architecture Search with Tensor-Train Encoding: Theory and Applications to Signal Processing
Jun Qi, Chao-Han Huck Yang, Pin-Yu Chen +3 more·Jan 10, 2026
We introduce CL-QAS, a continual quantum architecture search framework that mitigates the challenges of costly amplitude encoding and catastrophic forgetting in variational quantum circuits. The method uses Tensor-Train encoding to efficiently compre...
A Linear Combination of Unitaries Decomposition for the Laplace Operator
Thomas Hogancamp, Reuben Demirdjian, Daniel Gunlycke·Jan 10, 2026
We provide novel linear combination of unitaries decompositions for a class of discrete elliptic differential operators. Specifically, Poisson problems augmented with periodic, Dirichlet, Neumann, Robin, and mixed boundary conditions are considered o...
Exact Solutions for Compactly Supported Parabolic and Landau Barriers
Peter Collas, David Klein·Jan 10, 2026
We derive exact solutions to the one-dimensional Schrödinger equation for compact support parabolic and hyperbolic secant potential barriers, along with combinations of these types of potential barriers. We give the expressions for transmission and r...
Fault-Tolerant Quantum Error Correction: Implementing Hamming-Based Codes with Advanced Syndrome Extraction Techniques
Soham Bhadra, Diyansha Singh, Angana Chowdhury·Jan 10, 2026
Building reliable quantum computers requires protecting fragile quantum states from inevitable environmental noise and operational errors. While quantum error correction codes like the Steane $[\![7,1,3]\!]$ code provide elegant theoretical solutions...
Controlling Rydberg atom-polariton interactions: from exceptional points to fast readout
Tamara Šumarac, Emily H. Qiu, Shai Tsesses +8 more·Jan 9, 2026
Rydberg atoms represent a platform underpinning many recent developments in quantum computation, simulation, sensing, and metrology. They further facilitate optical nonlinearity at the single-photon level when coupled to photons propagating in atomic...
Bipartitioning of Graph States for Distributed Measurement-Based Quantum Computing
Kjell Fredrik Pettersen, Matthias Heller, Giorgio Sartor +1 more·Jan 9, 2026
Measurement-Based Quantum Computing (MBQC) is inherently well-suited for Distributed Quantum Computing (DQC): once a resource state is prepared and distributed across a network of quantum nodes, computation proceeds through local measurements coordin...
Creation and precise spectroscopy of $^{86}$Sr$_2$ halo molecules
Brandon Iritani, Jingjing Huang, Wenwei Xu +3 more·Jan 9, 2026
We report on the creation of $^{86}$Sr$_2$ molecules in the halo state and neighboring weakly bound states. Efficient molecule production via one-photon photoassociation relies on sufficient wavefunction overlap between the target vibrational states ...
Looking for Work in Quantum Thermodynamics
Eugene Y. S. Chua·Jan 9, 2026
This paper diagnoses a much-discussed problem in quantum thermodynamics, that of generalizing classical work into the quantum domain. I begin with the no-go theorem of Perarnau-Llobet et al (2017): no universal measurement scheme for quantum work sat...
The pros and cons of using deep reinforcement learning or genetic algorithms to design control schemes for quantum state transfer on qubit chains
Sofía Perón Santana, Ariel Fiuri, Martín Domínguez +1 more·Jan 9, 2026
In recent years, control methods based on different optimization techniques have shed light on the possibilities of processing information in many quantum systems. When exploring the transmission of quantum states, faster transmission times are manda...
Quantum algorithm for dephasing of coupled systems: decoupling and IQP duality
Sabrina Yue Wang, Raul A. Santos·Jan 9, 2026
Noise and decoherence are ubiquitous in the dynamics of quantum systems coupled to an external environment. In the regime where environmental correlations decay rapidly, the evolution of a subsytem is well described by a Lindblad quantum master equat...
Mining Quantum Software Patterns in Open-Source Projects
Neilson Carlos Leite Ramalho, Erico A. da Silva, Higor Amario de Souza +1 more·Jan 9, 2026
Quantum computing has become an active research field in recent years, as its applications in fields such as cryptography, optimization, and materials science are promising. Along with these developments, challenges and opportunities exist in the fie...
Latent splitting as a causal probe
Santiago Zamora, Pedro Lauand, Isadora Veeren +2 more·Jan 9, 2026
Generalizations of Bell's framework to causal networks have yielded new foundational insights and applications, including the use of interventions to enhance the detection of nonclassicality in scenarios with communication. Such interventions, howeve...
Universal Predictors for Mixing Time more than Liouvillian Gap
Yi-Neng Zhou·Jan 9, 2026
We analyze the mixing time of open quantum systems governed by the Lindblad master equation, showing it is not only determined by the Liouvillian gap, but also the trace norm of the lowest excited state of Liouvillian superoperator. By utilizing thes...
Slow mixing and emergent one-form symmetries in three-dimensional $\mathbb{Z}_2$ gauge theory
Charles Stahl, Benedikt Placke, Vedika Khemani +1 more·Jan 9, 2026
Symmetry-breaking order at low temperatures is often accompanied by slow relaxation dynamics, due to diverging free-energy barriers arising from interfaces between different ordered states. Here, we extend this correspondence to classical topological...
Scaleable LED-pumped Room-temperature Maser using a Multi-blade Optical Injector
Mingyang Liu, Zike Cheng, Ziqiu Huang +3 more·Jan 9, 2026
Though the performance of room-temperature masers has improved over the last decade, relatively little attention has been paid to the optics used to pump the maser's gain medium. In this work, we investigate a novel multi-blade optical ``injector'' t...
Generalized Poincaré inequality for quantum Markov semigroups
Marius Junge, Jia Wang·Jan 9, 2026
We prove a noncommutative $(p,p)$-Poincaré inequality for trace-symmetric quantum Markov semigroups on tracial von Neumann algebras, assuming only the existence of a spectral gap. Extending semi-commutative results of Huang and Tropp, our argument us...