Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Naturalistic intuitionism for physics
Bruno Bentzen, Flavio Del Santo, Nicolas Gisin·Sep 26, 2025
Recently, a novel intuitionistic reconstruction of the foundations of physics has been primarily developed by Nicolas Gisin and Flavio Del Santo drawing on naturalism. Our goal in this paper is to examine and develop the philosophical background of t...
Resource-efficient universal photonic processor based on time-multiplexed hybrid architectures
Jonas Lammers, Laura Ares, Federico Pegoraro +4 more·Sep 26, 2025
For the ever-growing field of quantum information processing, large-scale, efficient multi-port interferometers serving as photonic processors are required. In this context, the suitability of quantum walks as the interferometric base for universal c...
Metric response of relative entropy: a universal indicator of quantum criticality
Pritam Sarkar, Diptiman Sen, Arnab Sen·Sep 26, 2025
The information-geometric origin of fidelity susceptibility and its utility as a universal probe of quantum criticality in many-body settings have been widely discussed. Here we explore the metric response of quantum relative entropy (QRE), by tracin...
A Quantum Algorithm for Nonlinear Electromagnetic Fluid Dynamics via Koopman-von Neumann Linearization
Hayato Higuchi, Yuki Ito, Kazuki Sakamoto +2 more·Sep 26, 2025
To simulate plasma phenomena, large-scale computational resources have been employed in developing high-precision and high-resolution plasma simulations. One of the main obstacles in plasma simulations is the requirement of computational resources th...
Probing high-frequency gravitational waves with entangled vibrational qubits in linear Paul traps
Ryoto Takai·Sep 26, 2025
This work investigates the use of linear Paul traps as quantum sensors for detecting megahertz gravitational waves. Single-ion configurations exploit graviton-photon conversion in the presence of external magnetic fields, while two-ion systems use re...
Tunable optical lattices for the creation of matter-wave lattice solitons
Robbie Cruickshank, Arthur La Rooij, Ethan F. Kerr +3 more·Sep 26, 2025
We present experimental techniques that employ an optical accordion lattice with dynamically tunable spacing to create and study bright matter-wave solitons in optical lattices. The system allows precise control of lattice parameters over a wide rang...
Two classes of quantum spin systems that are gapped on any bounded-degree graph
Nicholas Hunter-Jones, Marius Lemm·Sep 26, 2025
We study translation-invariant quantum spin Hamiltonians on general graphs with non-commuting interactions either given by (i) a random rank-$1$ projection or (ii) Haar projectors. For (i), we prove that the Hamiltonian is gapped on any bounded-degre...
Quantum internal vibrations in macroscopic systems with classical centers of mass
Gabriel H. S. Aguiar, George E. A. Matsas·Sep 26, 2025
Harmonizing classical and quantum worlds is a major challenge for modern physics. A significant portion of the scientific community supports the notion that classical mechanics is an effective theory that arises from quantum mechanics. Recently, the ...
Feature- and process-based optimal control of quantum dynamics
M. Farnia, V. Rezvani, A. T. Rezakhani·Sep 26, 2025
Preparing desired quantum states and quantum operations (processes) is essential for numerous tasks in quantum computation. Several approaches have been developed for optimal control of quantum states, whereas optimal strategies for preparation of a ...
Entanglement dynamics of light's orbital angular momentum under a Lorentz boost
Moslem Mahdavifar·Sep 26, 2025
In this study, we report on the evolution of photonic orbital angular momentum (OAM) entanglement in inertial reference frames under a Lorentz boost, covering the general cases of zero and non-zero relative motion between observers of the entangled s...
Quantum topological data analysis algorithm for dynamical systems
Nhat A. Nghiem·Sep 26, 2025
Dynamical systems appear in nearly every aspect of the physical world. As such, understanding the properties of dynamical systems is of great importance. Typically, a dynamical system is described by a system of ordinary differential equations (ODE)....
On the Incompatibility of Quantum State Geometry and Fuzzy Metric Spaces: Three No-Go Theorems
Nicola Fabiano·Sep 26, 2025
We prove three structural impossibility results demonstrating that fuzzy metric spaces cannot capture essential features of quantum state geometry. First, we show they cannot model destructive interference between concepts due to phase insensitivity....
Quantum sensing of a quantum field
Ricard Ravell Rodríguez, Martí Perarnau-Llobet, Pavel Sekatski·Sep 26, 2025
Estimating a classical parameter encoded in the Hamiltonian of a quantum probe is a fundamental and well-understood task in quantum metrology. A textbook example is the estimation of a classical field's amplitude using a two-level probe, as described...
Multi-channel convolutional neural quantum embedding
Yujin Kim, Changjae Im, Taehyun Kim +2 more·Sep 26, 2025
Classification using variational quantum circuits is a promising frontier in quantum machine learning. Quantum supervised learning (QSL) applied to classical data using variational quantum circuits involves embedding the data into a quantum Hilbert s...
Decoding quantum low density parity check codes with diffusion
Zejun Liu, Anqi Gong, Bryan K. Clark·Sep 26, 2025
An efficient decoder is essential for quantum error correction, and data-driven neural decoders have emerged as promising, flexible solutions. Here, we introduce a diffusion model framework to infer logical errors from syndrome measurements in quantu...
Bridging Quantum Noise and Classical Electrodynamics with Stochastic Methods
Felix Hitzelhammer, Johannes Stowasser, Lukas Hanschke +7 more·Sep 26, 2025
The development of emerging technologies in quantum optics demands accurate models that faithfully capture genuine quantum effects. Mature semiclassical approaches reach their limits when confronted with quantized electromagnetic fields, while full H...
New Quantum Internet Applications via Verifiable One-Time Programs
Lev Stambler·Sep 26, 2025
We introduce Verifiable One-Time Programs (Ver-OTPs) and use them to construct single-round Open Secure Computation (OSC), a novel primitive enabling applications like (1) single-round sealed-bid auctions, (2) single-round and honest-majority atomic ...
Two times or none?
Michael Ridley, Eliahu Cohen·Sep 26, 2025
Attempts to treat time on an equivalent footing with space in quantum mechanics have been apparently dominated by `timeless' approaches, such as the one of Page and Wootters, which allow meaningful discussion of a `time operator'. However, there is a...
Hybrid SU(1,1) interferometry in optomechanics
Chao Meng, Emil Zeuthen, Polina R. Sharapova·Sep 26, 2025
In non-degenerate SU(1,1) interferometers, beam splitters are replaced by two-mode squeezers, enabling sub-shot-noise sensitivity without input squeezing and robustness to detection losses by quantum entanglement. We propose a hybrid implementation i...
The quantum XY chain with boundary fields: finite-size gap and phase behavior
Aldo Coraggio, Andrea Pelissetto·Sep 26, 2025
We present a detailed study of the finite-size one-dimensional quantum XY chain in a transverse field in the presence of boundary fields coupled with the order-parameter spin operator. We consider fields located at the chain boundaries that have the ...