Papers
Live trends in quantum computing research, updated daily from arXiv.
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A Time-Symmetric Variational Reformulation of Nonrelativistic Quantum Mechanics
Lance H. Carter·Dec 26, 2025
Standard quantum mechanics relies on two distinct dynamical principles: unitary evolution and collapse. A mathematically self-contained variational framework is presented that replaces this dualism with a single principle, in which nonrelativistic Sc...
Entanglement Islands and Thermodynamics of the Black Hole in Asymptotically Safe Quantum Gravity
Sobhan Kazempour, Sichun Sun, Chengye Yu·Dec 26, 2025
We study thermodynamic properties and the entanglement island of a black hole in asymptotically safe quantum gravity, analyzing key thermodynamic quantities such as the Hawking temperature, heat capacity, and entropy, as well as the mass-horizon radi...
Linear Program Witness for Network Nonlocality in Arbitrary Networks
Salome Hayes-Shuptar, Daniel Bhatti, Ana Belen Sainz +1 more·Dec 26, 2025
Network nonlocality extends Bell nonlocality to settings with multiple independent sources and parties. Certifying it in quantum information processing tasks requires suitable witnesses. However, in contrast to local correlations, the set of network-...
Logical Consistency as a Dynamical Invariant: A Quantum Model of Self-Reference and Paradox
Nikolaos Cheimarios, Spyridoula Cheimariou·Dec 26, 2025
Logical paradoxes and inconsistent information pose deep challenges in epistemology and the philosophy of logic. Classical systems typically handle contradictions only through external checks or by altering the logical framework, as in Tarski's hiera...
Evaluating Supervised Learning Approaches for Quantification of Quantum Entanglement
Shruti Aggarwal, Trasha Gupta, R. K. Agrawal +1 more·Dec 26, 2025
Quantum entanglement is a key resource in quantum computing and quantum information processing tasks. However, its quantification remains a major challenge since it cannot be directly extracted from physical observables. To address this issue, we stu...
A General Framework for Constructing Local Hidden-state Models to Determine the Steerability
Yanning Jia, Fenzhuo Guo, Mengyan Li +2 more·Dec 26, 2025
Not all entangled states can exhibit quantum steering, and determining whether a given entangled state is steerable is a crucial problem in quantum information theory. The main challenge lies in verifying the existence of a local hidden-state (LHS) m...
Decoherence challenges in Nanoscience: A Quantum Phase Space perspective
Angelo Mamitiana Ralaikoto, Diary Lova Ratsimbazafy, Ravo Tokiniaina Ranaivoson +5 more·Dec 25, 2025
Quantum decoherence, the process by which a quantum system loses its coherence through interaction with an environment and becomes classical-like, represents both the fundamental mechanism for the quantum-to-classical transition and a major challenge...
Asymmetric polaron picture for the quantum Rabi model
Feng Qiao, Qiu-Yi Chen, Zu-Jian Ying·Dec 25, 2025
The experimental access to ultra-strong couplings in light-matter interactions has made the quantum phase transition (QPT) in the quantum Rabi model practically relevant, while the physics of the QPT has not yet been fully explored. The polaron pictu...
Trade-off relation between integrated metrological gain and local dissipation in magnetic-field sensing by quantum spin ensemble
Nozomu Takahashi, Le Bin Ho, Hiroaki Matsueda·Dec 25, 2025
Quantum metrology plays a central role in precision sensing, where quantum enhancement of detection performance is crucial for both fundamental studies and practical applications. In this work, we derive a tight performance bound for magnetic-field s...
Optimizing Quantum State Transformation Under Locality Constraint
Sasan Sarbishegi, Maryam Sadat Mirkamali·Dec 24, 2025
In this paper, we present a general numerical framework for both deterministic and probabilistic quantum state transformations, under locality constraints. For a given arbitrary bipartite initial state and a desired bipartite target state, we constru...
Quantum entanglement between partons in a strongly coupled quantum field theory
Wenyu Zhang, Wenyang Qian, Yiyu Zhou +2 more·Dec 24, 2025
We perform a first-principles, non-perturbative investigation of quantum entanglement between partonic constituents in a strongly coupled 3+1-dimensional scalar Yukawa theory, using light-front Hamiltonian methods with controlled Fock-space truncatio...
Information-Scrambling-Enhanced Quantum Sensing Beyond the Standard Quantum Limit
Yangyang Ge, Haoyu Zhou, Wen Zheng +16 more·Dec 24, 2025
Quantum sensing promises measurement precision beyond classical limits, but its practical realization is often hindered by decoherence and the challenges of generating and stabilizing entanglement in large-scale systems. Here, we experimentally demon...
Hamiltonian-Informed Point Group Symmetry-Respecting Ansatz for Variational Quantum Eigensolver
Runhong He, Arapat Ablimit, Xin Hong +5 more·Dec 24, 2025
Solving molecular energy levels via the Variational Quantum Eigensolver (VQE) algorithm represents one of the most promising applications for demonstrating practically meaningful quantum advantage in the noisy intermediate-scale quantum (NISQ) era. T...
Device-Independent Anonymous Communication in Quantum Networks
Srijani Das, Manasi Patra, Tuhin Paul +2 more·Dec 24, 2025
Anonymity is a fundamental cryptographic primitive that hides the identities of both senders and receivers during message transmission over a network. Classical protocols cannot provide information-theoretic security for such task, and existing quant...
Precise quantum control of unidirectional field-free molecular orientation
Qian-Qian Hong, Zhe-Jun Zhang, Chuan-Cun Shu +3 more·Dec 24, 2025
The capability to control molecular rotation for field-free orientation, which arranges molecules in specific spatial directions without external fields, is crucial in physics, chemistry, and quantum information science. However, conventional methods...
AI-Accelerated Qubit Readout at the Single-Photon Level for Scalable Atomic Quantum Processors
Yaoting Zhou, Weisen Wang, Zhuangzhuang Tian +6 more·Dec 24, 2025
Quantum state readout with minimal resources is crucial for scalable quantum information processing. As a leading platform, neutral atom arrays rely on atomic fluorescence imaging for qubit readout, requiring short exposure, low photon count schemes ...
Tutorial on Superconducting Quantum Circuits: From Basics to Applications
Denys Derlian Carvalho Brito, Fernando Valadares, André Jorge Carvalho Chaves·Dec 24, 2025
As superconducting circuits emerge as a leading platform for scalable quantum information processing, building comprehensive bridges from the foundational principles of macroscopic quantum phenomena to the architecture of modern quantum devices is in...
Heralded Linear Optical Generation of Dicke States
Minhyeok Kang, Jaehee Kim, William J. Munro +2 more·Dec 24, 2025
Entanglement is a fundamental feature of quantum mechanics and a key resource for quantum information processing. Among multipartite entangled states, Dicke states $|D_n^k\rangle$ are distinguished by their permutation symmetry, which provides robust...
Higher-Dimensional Information Lattice: Quantum State Characterization through Inclusion-Exclusion Local Information
Ian Matthias Flór, Claudia Artiaco, Thomas Klein Kvorning +1 more·Dec 23, 2025
We generalize the information lattice, originally defined for one-dimensional open-boundary chains, to characterize quantum many-body states in higher-dimensional geometries. In one dimension, the information lattice provides a position- and scale-re...
Horizons and Soft Quantum Information
Daine L. Danielson, Gautam Satishchandran·Dec 23, 2025
It was recently shown that black holes decohere any quantum superpositions in their vicinity. This decoherence is mediated by soft radiation through the horizon, and can be understood as the result of the fact that quantum states in the exterior sour...