Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
27,548
This Month
1,041
Today
0
Research Volume
12,894 papers in 12 months (-5% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
AQER: a scalable and efficient data loader for digital quantum computers
Kaining Zhang, Xinbiao Wang, Yuxuan Du +2 more·Feb 2, 2026
Digital quantum computing promises to offer computational capabilities beyond the reach of classical systems, yet its capabilities are often challenged by scarce quantum resources. A critical bottleneck in this context is how to load classical or qua...
On the reality of quantum states: A pedagogic survey from classical to quantum mechanics
Moncy Vilavinal John·Feb 2, 2026
Some recent experiments claim to show that any model in which a quantum state represents mere information about an underlying physical reality of the system must make predictions which contradict those of quantum theory. The present work undertakes t...
Relativistic Position Verification with Coherent States
Guan-Jie Fan-Yuan, Yang-Guang Shan, Cong Zhang +10 more·Feb 2, 2026
Determining the position of an entity is a fundamental prerequisite for nearly all activities. Classical means, however, have been proven incapable of providing secure position verification, meaning that a prover can mislead verifiers about its actua...
Black Hole Interior and Quantum Error Correction with Dynamical Gravity
Akihiro Miyata, Tomonori Ugajin·Feb 1, 2026
According to the island formula, information in the code subspace defined in the black hole interior is embedded in the Hawking radiation after the Page time. At first sight, this embedding suggests that operations acting on the Hawking radiation cou...
Equivalence of Privacy and Stability with Generalization Guarantees in Quantum Learning
Ayanava Dasgupta, Naqueeb Ahmad Warsi, Masahito Hayashi·Feb 1, 2026
We present a unified information-theoretic framework elucidating the interplay between stability, privacy, and the generalization performance of quantum learning algorithms. We establish a bound on the expected generalization error in terms of quantu...
Wigner Function Shapelets I : formalism
Shun Arai·Feb 1, 2026
We extend shapelets for the analysis of galaxy images to be available in a phase space, introducing \textit{Wigner Function Shapelets (WFS)}. Whereas conventional shapelets expand images separately in configuration or Fourier space using Hermite-Gaus...
Asymmetry and dynamical criticality
Andesson B. Nascimento, Lucas Chibebe Céleri·Jan 31, 2026
Symmetries play a central role in both equilibrium and nonequilibrium phase transitions, yet their quantitative characterization in dynamical quantum phase transitions (DQPTs) remains an open challenge. In this work, we establish a direct connection ...
Analysis of Hessian Scaling for Local and Global Costs in Variational Quantum Algorithm
Yihan Huang, Yangshuai Wang·Jan 31, 2026
Barren plateaus in variational quantum algorithms are typically described by gradient concentration at random initialization. In contrast, rigorous results for the Hessian, even at the level of entry-wise variance, remain limited. In this work, we an...
Enhanced Phase Estimation via Photon-Added Two-Mode Squeezed States and Kerr Nonlinearity
Zekun Zhao, Qingqian Kang, Teng Zhao +3 more·Jan 31, 2026
Quantum metrology employs quantum resources to achieve measurement precision beyond classical limits. This work investigates a Mach--Zehnder interferometer incorporating a Kerr nonlinear phase shifter, with photon-added two-mode squeezed coherent sta...
Deterministic Zeroth-Order Mirror Descent via Vector Fields with A Posteriori Certification
Masahito Hayashi·Jan 31, 2026
We develop a deterministic zeroth-order mirror descent framework by replacing gradients with a general vector field, yielding a vector-field-driven mirror update that preserves Bregman geometry while accommodating derivative-free oracles. Our analysi...
Practical Quantum Reservoir Computing in Rydberg Atom Arrays
Dong-Sheng Liu, Qing-Xuan Jie, Chang-Ling Zou +2 more·Jan 31, 2026
Quantum reservoir computing (QRC) is a promising quantum machine learning framework for near-term quantum platforms, yet the performance of different QRC architectures under realistic constraints remains largely unexplored. Here, we provide a compara...
Geometric Optimization for Tight Entropic Uncertainty Relations
Ma-Cheng Yang, Cong-Feng Qiao·Jan 31, 2026
Entropic uncertainty relations play a fundamental role in quantum information theory. However, determining optimal (tight) entropic uncertainty relations for general observables remains a formidable challenge and has so far been achieved only in a fe...
Wave-like amplification of near-threshold two-particle reactions: from muon-catalyzed fusion to $Λ\barΛ$ production at $e^-e^+$ annihilation
Vladimir S. Melezhik·Jan 30, 2026
A simple model is proposed to explain the recently found wave-like enhancement of the $Λ\barΛ$ pair production near the threshold at the $e^-e^+$ annihilation, which allows extracting model-independent scattering parameters and spectral information f...
Remarks on Dirac-Bergmann algorithm, Dirac's conjecture and the extended Hamiltonian
Kirill Russkov·Jan 30, 2026
The Dirac-Bergmann algorithm for the Hamiltonian analysis of constrained systems is a nice and powerful tool, widely used for quantization and non-perturbative counting of degrees of freedom. However, certain aspects of its application to systems wit...
Complexity of Quantum Trajectories
Luca Lumia, Emanuele Tirrito, Mario Collura +2 more·Jan 30, 2026
Open quantum systems can be described by unraveling Lindblad master equations into ensembles of quantum trajectories. Here we investigate how the complexity of such trajectories is affected by conservation laws and other dynamical constraints of the ...
Signatures of coherent initial ensembles on all work moments
Pranay Nayak, Sreenath K. Manikandan, Tan Van Vu +1 more·Jan 30, 2026
Standard treatments of quantum work using projective energy measurements erase initial coherence and alter the dynamics, thereby failing to capture the thermodynamic effects of coherent superpositions of energy eigenstates in an ensemble of initial s...
Understanding multiscale disorder in superconducting nanowire single photon detectors
Nirjhar Sarkar, Ronan Gourgues, Yueh-Chun Wu +7 more·Jan 30, 2026
Superconducting nanowire single-photon detectors are central to applications across quantum information science. Yet, their performance is limited by the effects of disorder and electrodynamic inhomogeneities that are not well understood. By combinin...
Free encoding capacity: A universal unit for quantum resources
Shampa Mondal, Soumajit Das, Preeti Parashar +1 more·Jan 30, 2026
A perfect d-dimensional quantum channel can convey log d-bits of classical information by encoding messages in d-orthogonal quantum states. Alternatively, for every quantum state at the senders end, there exist d-encoding operations which produce d-o...
Dicke superposition probes for noise-resilient Heisenberg and super-Heisenberg Metrology
Sudha, B. N. Karthik, K. S. Akhilesh +1 more·Jan 30, 2026
Phase sensing with entangled multiqubit states in the presence of noise is a central theme of modern quantum metrology. The present work investigates Dicke state superposition probes for quantum phase sensing under parameter encoding generated by one...
High-resolution tunable frequency beamsplitter enabled by an integrated silicon pulse shaper
Chen-You Su, Kaiyi Wu, Lucas M. Cohen +6 more·Jan 30, 2026
We demonstrate high-fidelity, tunable, and ultrafine-resolution on-chip frequency beamsplitters using a quantum frequency processor based on an integrated pulse shaper with six spectral channels. Near-ideal Hadamard gate performance is achieved, with...