Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Entanglement estimation of Werner states with a quantum extreme learning machine
Hajar Assil, Abderrahim El Allati, Gian Luca Giorgi·Nov 3, 2025
Quantum Extreme Learning Machines (QELMs) have emerged as a potent tool for various quantum information processing tasks. We present a QELM protocol for estimating the amount of entanglement in Werner states. The protocol requires the generation of a...
Distinct Critical Scaling of Quantum Fisher Information in a Quantum Rabi Triangle System
Yuyang Tang, Yu Yang, Min An +1 more·Nov 3, 2025
Critical properties of a quantum system are recognized as valuable resources for quantum metrology. In this work, we investigate the criticality-enhanced sensing in a quantum Rabi triangle system, which exhibits multiple phases. Around the phase boun...
In situ calibration of unitary operations during quantum error correction
Jonathan Kunjummen, Jacob M. Taylor·Nov 2, 2025
Quantum error correction uses the measurement of syndromes and classical decoding algorithms to estimate the location and type of errors while protecting the encoded quantum bits. Here we consider how prior information and Bayesian updates can play a...
On entropy production of repeated quantum measurements III. Quantum detailed balance
Tristan Benoist, Noé Cuneo, Vojkan Jakšić +1 more·Nov 2, 2025
In light of the dynamical-systems approach to entropy production in repeated quantum measurements, proposed and illustrated in Commun. Math. Phys. 357, 77-123 (2018) [arXiv:1607.00162] and J. Stat. Phys. 182, 44 (2021) [arXiv:2012.03885], we characte...
Hyperentanglement in Nanophotonic Systems with Discrete Rotational Symmetry
Lior Fridman, Amit Kam, Amir Sivan +3 more·Nov 2, 2025
We propose a scheme to generate hyperentanglement between photons carrying angular momentum in nanophotonic systems with discrete rotational symmetry. Coupling free-space photons into surface plasmon polaritons by a polygonal-shaped grating restricts...
Quantum Qomrades: Catalysts in Resource Theories and Memories in Dynamic Programming
Jeongrak Son·Nov 1, 2025
Quantum information theory explores the limits of manipulating quantum states. While auxiliary systems often enhance information processing, a systematic explanation for their power has been lacking. This thesis addresses this gap by investigating th...
Quantum Machine Unlearning: Foundations, Mechanisms, and Taxonomy
Thanveer Shaik, Xiaohui Tao, Haoran Xie·Nov 1, 2025
Quantum Machine Unlearning has emerged as a foundational challenge at the intersection of quantum information theory privacypreserving computation and trustworthy artificial intelligence This paper advances QMU by establishing a formal framework that...
Local perception operators and classicality: new tools for old tests
Rohit Kishan Ray·Oct 31, 2025
Quantum nonlocality is often judged by violations of Bell-type inequalities for a given state. The computation of such violations is a global task, requiring evaluation of global correlations and subsequent testing against a Bell functional. We ask i...
Hadronic scattering in (1+1)D SU(2) lattice gauge theory from tensor networks
João Barata, Juan Hormaza, Zhong-Bo Kang +1 more·Oct 31, 2025
We present a first real-time study of hadronic scattering in a (1+1)-dimensional SU(2) lattice gauge theory with fundamental fermions using tensor-network techniques. Working in the gaugeless Hamiltonian formulation -- where the gauge field is exactl...
Quantum waste management: Utilizing residual states in quantum information processing
Karol Horodecki, Chirag Srivastava, Leonard Sikorski +1 more·Oct 31, 2025
We propose a framework for quantum residual management, in which states discarded after a resource distillation process are repurposed as inputs for subsequent quantum information tasks. This approach extends conventional quantum resource theories by...
Resolving the phase of a Dirac topological state via interferometric photoemission
Shiri Gvishi, Ittai Sidilkover, Shaked Rosenstein +8 more·Oct 31, 2025
The electronic wavefunction is at the heart of physical phenomena, defining the frontiers of quantum materials research. While the amplitude of the electron wavefunction in crystals can be measured with state-of-the-art probes in unprecedented resolu...
Entanglement in the energy-constrained prepare-and-measure scenario: applications to randomness certification and channel discrimination
Raffaele D'Avino, Gabriel Senno, Mir Alimuddin +1 more·Oct 31, 2025
Quantum information tasks are often analyzed under varying trust assumptions about the devices involved. The semi-device-independent (SDI) framework offers a balance between needed assumptions and experimental feasibility. In this work, we study the ...
Experimental Quantum Channel Purification
Yue-Yang Fei, Zhenhuan Liu, Rui Zhang +7 more·Oct 31, 2025
Quantum networks, which integrate multiple quantum computers and the channels connecting them, are crucial for distributed quantum information processing but remain inherently susceptible to channel noise. Channel purification emerges as a promising ...
The role of entanglement in energy-restricted communication and randomness generation
Carles Roch I Carceller, Armin Tavakoli·Oct 31, 2025
A promising platform for semi-device-independent quantum information is prepare-and-measure experiments restricted only by a bound on the energy of the communication. Here, we investigate the role of shared entanglement in such scenarios. For classic...
Long-lived giant circular Rydberg atoms at room temperature
Einius Pultinevicius, Aaron Götzelmann, Fabian Thielemann +2 more·Oct 31, 2025
Stability achieved by large angular momentum is ubiquitous in nature, with examples ranging from classical mechanics, over optics and chemistry, to nuclear physics. In atoms, angular momentum can protect excited electronic orbitals from decay due to ...
Quantum Secret Sharing Scheme on Hypercyclic Quantum Structures
Lei Li, Zhi Li·Oct 31, 2025
This paper investigates the construction of efficient quantum secret sharing schemes for quantum access structures based on hypergraphs with three hyperedges. We prove that hypercycles with three hyperedges are quantum access structures if and only i...
Manipulating Excitation Dynamics in Structured Waveguide Quantum Electrodynamics
I Gusti Ngurah Yudi Handayana, Ya-Tang Yu, Wei-Hsuan Chung +1 more·Oct 31, 2025
Waveguide quantum electrodynamics (wQED) has become a central platform for studying collective light-matter interactions in low-dimensional photonic environments. While conventional wQED systems rely on uniform chirality or reciprocal emitter-wavegui...
Instruction-Directed MAC for Efficient Classical Communication in Scalable Multi-Chip Quantum Systems
Maurizio Palesi, Enrico Russo, Hamaad Rafique +4 more·Oct 31, 2025
Scalable quantum computing requires modular multi-chip architectures integrating multiple quantum cores interconnected through quantum-coherent and classical links. The classical communication subsystem is critical for coordinating distributed contro...
Optical Vortices: Revolutionizing the field of linear and nonlinear optics
Bikash K. Das, Camilo Granados, Marcelo F. Ciappina·Oct 31, 2025
Light is the fundamental medium through which we perceive the world around us. In the modern era, light can not only be used in its raw form but can also be used as a versatile tool. Generally, light fields carry energy and momentum (both linear and ...
Dependence-Driven, Scalable Quantum Circuit Mapping with Affine Abstractions
Marouane Benbetka, Merwan Bekkar, Riyadh Baghdadi +1 more·Oct 31, 2025
Qubit Mapping is a critical task in Quantum Compilation, as modern Quantum Processing Units (QPUs) are constrained to nearest-neighbor interactions defined by a qubit coupling graph. This compiler pass repairs the connectivity of two-qubit gates whos...