Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Entropy Bounds via Hypothesis Testing and Its Applications to Two-Way Key Distillation in Quantum Cryptography
Rutvij Bhavsar, Junguk Moon, Joonwoo Bae·Feb 5, 2026
Quantum key distribution (QKD) achieves information-theoretic security, without relying on computational assumptions, by distributing quantum states. To establish secret bits, two honest parties exploit key distillation protocols over measurement out...
Simulation of Adjoints and Petz Recovery Maps for Unknown Quantum Channels
Chengkai Zhu, Ziao Tang, Guocheng Zhen +3 more·Feb 5, 2026
Transformations of quantum channels, such as the transpose, complex conjugate, and adjoint, are fundamental to quantum information theory. Given access to an unknown channel, a central problem is whether these transformations can be implemented physi...
Quantum statistical functions
Haruki Emori·Feb 5, 2026
Statistical functions such as the moment-generating function, characteristic function, cumulant-generating function, and second characteristic function are cornerstone tools in classical statistics and probability theory. They provide a powerful mean...
Assessing the Sensitivity of Niobium- and Tantalum-Based Superconducting Qubits to Infrared Radiation
Michael Kerschbaum, Felix Wagner, Uroš Ognjanović +7 more·Feb 5, 2026
The use of tantalum films for superconducting qubits has recently extended qubit coherence times significantly, primarily due to reduced dielectric losses at the metal-air interface. However, the choice of base material also influences the sensitivit...
The Quantum Message Complexity of Distributed Wake-Up with Advice
Peter Robinson, Ming Ming Tan·Feb 5, 2026
We consider the distributed wake-up problem with advice, where nodes are equipped with initial knowledge about the network at large. After the adversary awakens a subset of nodes, an oracle computes a bit string (``the advice'') for each node, and th...
Advanced Quantum Communication and Quantum Networks -- From basic research to future applications
Björn Kubala, Alexander Sauer, Alessandro Tarantola +7 more·Feb 5, 2026
Classical communication is the basis for many of our current and future technologies, such as mobile phones, video conferences, autonomous vehicles and particularly the internet. In contrast, quantum communication is governed by the laws of quantum m...
Efficient implementation of arbitrary Hermitian-preserving and trace-preserving maps
Weizhou Cai, Zi-Jie Chen, Xuanqiang Zhao +4 more·Feb 5, 2026
Quantum control has been a cornerstone of quantum information science, driving major advances in quantum computing, quantum communication, and quantum sensing. Over the years, it has enabled the implementation of arbitrary completely positive and tra...
Color Centers and Hyperbolic Phonon Polaritons in Hexagonal Boron Nitride: A New Platform for Quantum Optics
Jie-Cheng Feng, Johannes Eberle, Sambuddha Chattopadhyay +3 more·Feb 5, 2026
Hyperbolic phonon polaritons (HPPs) in hexagonal boron nitride (hBN) confine mid-infrared light to deep-subwavelength scales and may offer a powerful route to strong light-matter interactions. Generation and control of HPPs are typically accessed usi...
Numerical approaches to entangling dynamics from variational principles
Christian Offen, Boris Wembe, Laura Ares +2 more·Feb 5, 2026
In this work, we address the numerical identification of entanglement in dynamical scenarios. To this end, we consider different programs based on the restriction of the evolution to the set of separable (i.e., non-entangled) states, together with th...
Investigations on Quantum Correlations and Open Quantum System Dynamics Through Nuclear Spins
Arijit Chatterjee·Feb 5, 2026
Nuclear spins provide an ideal platform for studying quantum correlations and open quantum system dynamics across diverse areas, including quantum information, quantum foundations, and many-body physics. This is enabled by their long longitudinal (T1...
A Comparative Study of Correlation and Relativistic Effects on Atomic Ionization Energy
Mohamed Kahil, Fatima Fakih, Nabil Joudieh +1 more·Feb 5, 2026
This study investigates the interplay between relativistic effects and electron correlation effects on the first ionization energies of heavy atoms (Au through Rn, Z = 79-86). We perform two complementary analyses: (1) comparing relativistic correcti...
Dispersion in nonlinear interferometry: implications for optical coherence tomography with undetected photons
Ivan Zorin, Paul Gattinger·Feb 5, 2026
Nonlinear SU(1,1) quantum interferometers based on non-degenerate optical parametric down-conversion exhibit strong unbalanced group velocity dispersion (GVD). This feature is intrinsic to this type of interferometer as correlated photons of vastly d...
Hamiltonian Benchmark of a Solid-State Spin-Photon Interface for Computation
Tejas Acharya, Loïc Lanco, Olivier Krebs +3 more·Feb 5, 2026
Light-matter interfaces are pivotal for quantum computation and communication. While typically analyzed using single-mode or open-quantum-system approximations, these models often neglect multi-mode field states and light-matter entanglement, hinderi...
Simultaneous reconstruction of quantum process and noise via corrupted sensing
Mengru Ma, Jiangwei Shang·Feb 5, 2026
Quantum processes, including quantum gates and channels, are integral to various quantum information tasks, making the efficient characterization of these processes and their underlying noise critically important. Here, we propose a framework for qua...
Adaptive controllable architecture of analog Ising machine
Langyu Li, Ruoyu Wu, Yong Wang +4 more·Feb 5, 2026
As a quantum-inspired, non-traditional analog solver architecture, the analog Ising machine (AIM) has emerged as a distinctive computational paradigm to address the rapidly growing demand for computational power. However, the mathematical understandi...
EgoPoseVR: Spatiotemporal Multi-Modal Reasoning for Egocentric Full-Body Pose in Virtual Reality
Haojie Cheng, Shaun Jing Heng Ong, Shaoyu Cai +3 more·Feb 5, 2026
Immersive virtual reality (VR) applications demand accurate, temporally coherent full-body pose tracking. Recent head-mounted camera-based approaches show promise in egocentric pose estimation, but encounter challenges when applied to VR head-mounted...
A Mixed Reality System for Robust Manikin Localization in Childbirth Training
Haojie Cheng, Chang Liu, Abhiram Kanneganti +3 more·Feb 5, 2026
Opportunities for medical students to gain practical experience in vaginal births are increasingly constrained by shortened clinical rotations, patient reluctance, and the unpredictable nature of labour. To alleviate clinicians' instructional burden ...
Simulation of boson sampling with optical feedback
Yu. A. Biriukov, I. V. Dyakonov·Feb 5, 2026
This work presents a theoretical model of boson sampling with optical feedback, in which a subset of the interferometer's output modes is looped back into the input modes. If the bosons are injected periodically into the input modes of the interferom...
Reducing the Complexity of Matrix Multiplication to $O(N^2log_2N)$ by an Asymptotically Optimal Quantum Algorithm
Jiaqi Yao, Ding Liu·Feb 5, 2026
Matrix multiplication is a fundamental classical computing operation whose efficiency becomes a major challenge at scale, especially for machine learning applications. Quantum computing, with its inherent parallelism and exponential storage capacity,...
Arithmetic Reconciliation for CVQKD: Challenges and Feasibility
Rávilla R. S. Leite, Juliana M. de Assis, Micael A. Dias +1 more·Feb 5, 2026
Continuous variable quantum key distribution allows two legitimate parties to share a common secret key and encompasses reconciliation protocols. A relatively new reconciliation protocol, Arithmetic Reconciliation, presents low complexity and has inc...