Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Fisher discord as a quantifier of quantum complexity
Huihui Li, Shunlong Luo, Yue Zhang·Oct 17, 2025
Two classically equivalent expressions of mutual information of probability distributions (classical bipartite states) diverge when extended to quantum systems, and this difference has been employed to define quantum discord, a quantifier of quantum ...
Investigating the performance of RPM JTWPAs by optimizing LC-resonator elements
M. A. Gali Labarias, T. Yamada, Y. Nakashima +2 more·Oct 17, 2025
Resonant phase-matched Josephson traveling-wave parametric amplifiers (RPM JTWPAs) play a key role in quantum computing and quantum information applications due to their low-noise, broadband amplification, and quadrature squeezing capabilities. This ...
Game-Theoretic Discovery of Quantum Error-Correcting Codes Through Nash Equilibria
Rubén Darío Guerrero·Oct 17, 2025
Quantum error correction code discovery has relied on algebraic constructions with predetermined structure or computational search lacking mechanistic interpretability. We introduce a game-theoretic framework recasting code optimization as strategic ...
Interrelation of Non-Classicality, Entropy, Irreversibility and Work extraction in Open Quantum Systems
Jai Lalita, Subhashish Banerjee·Oct 16, 2025
The interplay of non-classical volume, von Neumann entropy, entropy production, and ergotropy is investigated in various open quantum systems. Two categories of open quantum system models are utilized: spin-spin and spin-boson interaction models. The...
Ruelle-Pollicott Decay of Out-of-Time-Order Correlators in Many-Body Systems
Jerónimo Duarte, Ignacio García-Mata, Diego A. Wisniacki·Oct 16, 2025
The out-of-time-order correlator (OTOC) quantifies information scrambling in quantum systems and serves as a key diagnostic of quantum chaos. In one-body systems with a classical counterpart, the relaxation of the OTOC is governed by Ruelle-Pollicott...
Quantum Fisher Information as a Thermal and Dynamical Probe in Frustrated Magnets: Insights from Quantum Spin Ice
Chengkang Zhou, Zhengbang Zhou, Félix Desrochers +2 more·Oct 16, 2025
Quantum Fisher information (QFI) is a novel measure of multipartite quantum entanglement that can be measured in inelastic neutron scattering experiments on quantum magnets. In this work, we demonstrate that the QFI can be used to understand the ther...
Purified phase estimation samples spectra efficiently
Stefano Scali, Josh Kirsopp, Antonio Márquez Romero +1 more·Oct 16, 2025
Quantum phase estimation (QPE) is a cornerstone algorithm for extracting Hamiltonian eigenvalues, but its standard, eigenstate-centric form relies on carefully prepared coherent inputs that are costly or impractical for many strongly correlated syste...
Quantifiers of Noise Reducibility Under Restricted Control
Graeme D. Berk, Kavan Modi, Simon Milz·Oct 16, 2025
The correlation structure of multitime quantum processes - succinctly described by quantum combs - is an important resource for many quantum information protocols and control tasks. Inspired by approaches for quantum states, we introduce quantifiers ...
Bell-State Quantum Holography with Metasurfaces
Qinmiao Chen, Guangzhou Geng, Hong Liang +5 more·Oct 15, 2025
Metasurfaces composed of subwavelength nanostructures enable simultaneous control of polarization and wavefront, greatly enhancing holographic information capacity. Building on this capability, we extend holography into the quantum domain by experime...
Symmetry-protected states of interacting qubits in superconducting quantum circuits
Yi Shi, Eran Ginossar, Michael Stern +1 more·Oct 15, 2025
Superconducting circuits are one of the leading candidates for storing and manipulating quantum information. Among them, qubits embedded with intrinsic noise protection have seen rapid advancements in recent years. This noise protection is typically ...
Quantum Low-Density Parity-Check Codes
Bane Vasic, Valentin Savin, Michele Pacenti +2 more·Oct 15, 2025
Quantum error correction (QEC) is a cornerstone of quantum computing, enabling reliable information processing in the presence of noise. Sparse stabilizer codes -- referred to generally as quantum low-density parity-check (QLDPC) codes -- have risen ...
Decoherence in high energy collisions as renormalization group flow
Jiayin Gu, Shi-Jia Lin, Ding Yu Shao +2 more·Oct 15, 2025
The unification of quantum information science and collider physics is opening a new frontier in high-energy experiments, making a systematic understanding of decoherence a critical challenge. We present a framework to systematically compute spin dec...
Observation of area laws in an interacting quantum field simulator
Maciej T. Jarema, Mohammadamin Tajik, Jörg Schmiedmayer +2 more·Oct 15, 2025
Information shared between parties quantifies their correlation. The encoding of correlations across space and time characterises the structure, history, and interactions of systems. One of the most fundamental properties that emerges from studies of...
Inverse designed Hamiltonians for perfect state transfer and remote entanglement generation, and applications in superconducting qubits
Tian-Le Wang, Ze-An Zhao, Peng Wang +9 more·Oct 15, 2025
Hamiltonian inverse engineering enables the design of protocols for specific quantum evolutions or target state preparation. Perfect state transfer (PST) and remote entanglement generation are notable examples, as they serve as key primitives in quan...
Quantum teleportation, entanglement, LQU and LQFI in $e^{+}e^{-} \to \text{Y}\bar{\text{Y}}$ processes at BESIII through noisy channels
Elhabib Jaloum, Mohamed Amazioug·Oct 15, 2025
Quantum teleportation, a protocol that has received extensive and intensive attention in quantum information processing, allows a quantum state to be transferred from one particle to another. In this study, we analytically investigate fidelity ($F$),...
Agency cannot be a purely quantum phenomenon
Emily C. Adlam, Kelvin J. McQueen, Mordecai Waegell·Oct 15, 2025
What are the physical requirements for agency? We investigate whether a purely quantum system (one evolving unitarily in a coherent regime without decoherence or collapse) can satisfy three minimal conditions for agency: an agent must be able to crea...
Social Laser Theory as a Natural Extension of Quantum-Like Modeling
Andrei Khrennikov·Oct 15, 2025
This paper presents a comprehensive review of the Social Laser Theory (SLT) as a natural extension of the broader framework of Quantum-Like Modeling (QLM). While QLM applies the mathematical formalism of quantum theory . such as Hilbert space represe...
Entropic uncertainty and coherence in Einstein-Gauss-Bonnet gravity
Wen-Mei Li, Jianbo Lu, Shu-Min Wu·Oct 15, 2025
We investigate tripartite quantum-memory-assisted entropic uncertain and quantum coherence for GHZ and W states of a fermionic field in the background of a spherically symmetric black hole of Einstein-Gauss-Bonnet (EGB) gravity. Two distinct scenario...
Autler-Townes spectroscopy of a Rydberg ladder
Tai Xiang, Yue-Hui Lu, Jacquelyn Ho +3 more·Oct 15, 2025
Ladder-type two-photon excitation of an atom from a ground state $|g\rangle$, to an intermediate excited state $|e\rangle$, and, finally, to a Rydberg state $|r\rangle$, has a variety of uses from quantum information to sensing. A common scheme for d...
Optimal key rates for quantum key distribution with partial source characterization
Margarida Pereira, Guillermo Currás-Lorenzo, Mateus Araújo·Oct 15, 2025
Numerical security proofs based on conic optimization are known to deliver optimal secret-key rates, but so far they have mostly assumed that the emitted states are fully characterized. In practice, this assumption is unrealistic, since real devices ...