Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Rethinking Quantum Noise in Quantum Machine Learning: When Noise Improves Learning
Linghua Zhu, Yulong Dong, Ziyu Zhang +1 more·Jan 19, 2026
Quantum noise is conventionally viewed as a fundamental obstacle in near-term quantum computing, motivating extensive error correction and mitigation strategies. We present numerical evidence that challenges this consensus. Through experiments on qua...
Implementation of Leaking Quantum Walks on a Photonic Processor
E. Stefanutti, J. Philipps, J. Buetow +4 more·Jan 19, 2026
Quantum walks (QWs) represent pillars of quantum dynamics and information processing. They provide a powerful framework for simulating quantum transport, designing search algorithms, and enabling universal quantum computation. Several physical platfo...
Microscopic Quantum Friction
Pedro H. Pereira, F. Impens, C. Farina +2 more·Jan 19, 2026
We report on a microscopic theory of quantum friction. Our approach investigates the interplay between the dispersive response and the relative center-of-mass motion of two ground-state atoms. This coupling yields a quantum force, which can be expres...
Towards Simple and Useful One-Time Programs in the Quantum Random Oracle Model
Lev Stambler·Jan 19, 2026
We construct simulation-secure one-time memories (OTM) in the random oracle model, and present a plausible argument for their security against quantum adversaries with bounded and adaptive depth. Our contributions include: (1) A simple scheme where w...
The resonant level model from a Krylov perspective: Lanczos coefficients in a quadratic model
Merlin Füllgraf, Jiaozi Wang, Jochen Gemmer +1 more·Jan 19, 2026
We study the Lanczos coefficients in a quadratic model given by an impurity interacting with a multi-mode field of fermions, also known as resonant level model. We analytically derive closed expressions for the Lanczos coefficients of Majorana fermio...
Anomalous diffusion and localization in a disorder-free atomic mixture
Stefano Finelli, Beatrice Restivo, Alessio Ciamei +5 more·Jan 19, 2026
The concept of random walk, in which particles or waves undergo multiple collisions with the microscopic constituents of a surrounding medium, is central to understanding diffusive transport across many research areas. However, this paradigm may brea...
All-Dielectric Resonant Cavity Electro-Optic Transduction Between Microwave and Telecom
Mihir Khanna, Yang Hu, Thomas P. Purdy·Jan 19, 2026
We present a resonant electro-optic transducer for efficient conversion between microwave and telecom wavelength photons. Our platform employs a bulk lithium niobate crystal whose large dielectric constant creates wavelength-scale confinement of micr...
Quantum Data Structure for Range Minimum Query
Qisheng Wang, Zhean Xu, Zhicheng Zhang·Jan 19, 2026
Given an array $a[1..n]$, the Range Minimum Query (RMQ) problem is to maintain a data structure that supports RMQ queries: given a range $[l, r]$, find the index of the minimum element among $a[l..r]$, i.e., $\operatorname{argmin}_{i \in [l, r]} a[i]...
Noncontextual versus contextual interferometry
Jonte R. Hance, Jakov Krnic, Jan-Åke Larsson·Jan 19, 2026
Feynman famously said that single-particle interference is ``a phenomenon which is impossible to explain in any classical way, and which has in it the heart of quantum mechanics.'' In this paper we show that some of the phenomenology of interference ...
Product-State Approximation Algorithms for the Transverse Field Ising Model
Vincenzo Lipardi, David Mestel, Georgios Stamoulis·Jan 19, 2026
We study classical polynomial-time approximation algorithms for the transverse-field Ising model (TFIM) Hamiltonian, allowing a mixture of ferromagnetic and anti-ferromagnetic interactions between pairs of qbits, alongside transverse field terms with...
Comparison between explicit and implicit discretization strategies for a dissipative thermal environment
Xinxian Chen, Ignacio Franco·Jan 19, 2026
We investigate strategies for simulating open quantum systems coupled to dissipative baths by comparing explicit wave function-based discretization [via multi-layer multi-configuration time-dependent Hartree (ML-MCTDH)] and the implicit density matri...
Quantitative wave-particle duality in uniform multipath interferometers with symmetric which-path detector states
L. F. Melo, O. Jiménez, L. Neves·Jan 19, 2026
A quantum system (quanton) traverses an interferometer with $N$ equally probable paths and interacts with another quantum system (detector) that stores path information in a set of symmetric states. In this interferometric framework, we present entro...
Failure of the mean-field Hartree approximation for a bosonic many-body system with non-Hermitian Hamiltonian
Matias Ginzburg, Simone Rademacher, Giacomo De Palma·Jan 19, 2026
Mean-field Hartree theory is a central tool for reducing interacting many-body dynamics to an effective nonlinear one-particle evolution. This approximation has been employed also when the Hamiltonian that governs the many-body dynamics is not Hermit...
Quantum Circuit-Based Learning Models: Bridging Quantum Computing and Machine Learning
Fan Fan, Yilei Shi, Mihai Datcu +5 more·Jan 19, 2026
Machine Learning (ML) has been widely applied across numerous domains due to its ability to automatically identify informative patterns from data for various tasks. The availability of large-scale data and advanced computational power enables the dev...
No-Signalling Fixes the Hilbert-Space Inner Product
Arun Kumar Pati·Jan 19, 2026
We investigate whether the inner product structure of quantum mechanics can be modified without violating fundamental physical principles. We consider a generalized inner product defined by a positive operator and assume local unitary dynamics, exist...
The burden of Fundamentality: Metaphysical ambiguities and the issue of Superdeterminism
Gabriele Cafiero, Luca Molinari, Jonte R. Hance·Jan 19, 2026
In this paper we approach the problem of superdeterminism from a novel point of view, highlighting its character as a more metaphysical than scientific proposition. First, we introduce a distinction between two types of superdeterministic theories, n...
Exact dynamics and bound states of a cavity coupled to a two-dimensional reservoir
Heng-Na Xiong, Da-Wei Ye, Yang Yang +4 more·Jan 19, 2026
We demonstrate a robust scheme for quantum information storage based on bound states in a two-dimensional coupled-cavity array. When a target cavity is tuned to resonance with the array, a bound state in the continuum (BIC) emerges, coexisting with t...
Quantum Interactive Oracle Proofs
Baocheng Sun, Thomas Vidick·Jan 19, 2026
We initiate the study of quantum Interactive Oracle Proofs (qIOPs), a generalization of both quantum Probabilistically Checkable Proofs and quantum Interactive Proofs, as well as a quantum analogue of classical Interactive Oracle Proofs. In the model...
Nonreciprocity of intense light field and weak quantum signal in optomechanical systems with three-mode parametric interactions
Yao Dong, Xin-Yao Huang, Guo-Feng Zhang·Jan 19, 2026
We demonstrate nonreciprocal optical transmission for both intense classical fields and weak quantum signals within a reconfigurable optomechanical platform driven by three-mode parametric interactions. The platform is modular, where each three-mode ...
Anisotropic collective excitations of Bose gases in modified Newtonian dynamics
Ning Liu·Jan 19, 2026
Collective excitations are fundamental in quantum many-body physics, yet their spectra have traditionally been studied within Newtonian dynamics. In this paper, we investigate collective excitations in Bose gases under Modified Newtonian Dynamics (MO...