Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Timelike Quantum Energy Teleportation in the Nambu-Jona-Lasinio Model
Fidele J. Twagirayezu·May 28, 2025
We propose a novel timelike quantum energy teleportation (QET) protocol within the 1+1 dimensional Nambu-Jona-Lasinio (NJL) model, an interacting fermionic field theory exhibiting spontaneous chiral symmetry breaking. By coupling localized Unruh-DeWi...
Probing Time Reversal Symmetry Breaking using a Nonlinear Superconducting Ring Resonator
Nicolas Dirnegger, Marie Wesson, Arpit Arora +5 more·May 27, 2025
Time-reversal symmetry breaking (TRSB) has been central to detecting exotic phases of matter. Here, we leverage the circuit electrodynamics capabilities of superconducting devices to propose a novel scheme based on a multimode superconducting ring re...
Probing the quantum motion of a macroscopic mechanical oscillator with a radio-frequency superconducting qubit
Kyrylo Gerashchenko, Rémi Rousseau, Léo Balembois +11 more·May 27, 2025
Long-lived mechanical resonators like drums oscillating at MHz frequencies and operating in the quantum regime are a powerful platform for quantum technologies and tests of fundamental physics. Yet, quantum control of such systems remains challenging...
Ab initio many-fermion structure calculations on a quantum computer
W. Du, Yangguang Yang, Zixin Liu +2 more·May 26, 2025
To overcome the limitations of existing algorithms for solving self-bound quantum many-body problems -- such as those encountered in nuclear and particle physics -- that access only a restricted subset of energy levels and provide limited structural ...
Quantum Resilience: Canadian Innovations in Quantum Error Correction and Quantum Error Mitigation
G. Saxena, Jack S. Baker, Pablo Valle +3 more·May 26, 2025
In celebration of the 2025 International Year of Quantum Science and Technology, this article highlights the pioneering achievements and ongoing innovations in quantum error correction and quantum error mitigation by Canadian institutions, academia a...
Hardware-tailored logical Clifford circuits for stabilizer codes
Eric J Kuehnke, Kyano Levi, Joschka Roffe +2 more·May 26, 2025
Quantum error correction is the art of protecting fragile quantum information through suitable encoding and active interventions. After encoding $k$ logical qubits into $n>k$ physical qubits using a stabilizer code, this amounts to measuring stabiliz...
Neural Network Assisted Fermionic Compression Encoding: A Lossy-QSCI Framework for Resource-Efficient Ground-State Simulations
Yu-Cheng Chen, Ronin Wu, M. H. Cheng +1 more·May 23, 2025
Quantum computing promises to revolutionize many-body simulations for quantum chemistry, but its potential is constrained by limited qubits and noise in current devices. In this work, we introduce the Lossy Quantum Selected Configuration Interaction ...
Bosonic quantum Fourier codes
Anthony Leverrier·May 22, 2025
While 2-level systems, aka qubits, are a natural choice to perform a logical quantum computation, the situation is less clear at the physical level. Encoding information in higher-dimensional physical systems can indeed provide a first level of redun...
$\mathcal{PT-}$Symmetric Open Quantum Systems: Information Theoretic Facets
Baibhab Bose, Devvrat Tiwari, Subhashish Banerjee·May 22, 2025
The theory of an $η$-pseudo Hermitian Hamiltonian with $\mathcal{PT}$ symmetry is reviewed and extended to include open system dynamics. A first-principles derivation of the generalized Gorini-Kossakowski-Sudarshan-Lindblad master equation appropriat...
Quantum Multi-view Kernel Learning with Local Information
Jing Li, Yanqi Song, Su-Lu Qin +1 more·May 22, 2025
Kernel methods serve as powerful tools to capture nonlinear patterns behind data in machine learning. The quantum kernel, integrating kernel theory with quantum computing, has attracted widespread attention. However, existing studies encounter perfor...
End-to-End Speedup for Quantum Simulation-Based Optimization in Power Grid Management
Jonas Stein, Jannis Lutz, Moritz Sölderer +4 more·May 22, 2025
Quantum Simulation-based Optimization (QuSO) is a recently proposed class of optimization problems that entails industrially relevant problems characterized by cost functions or constraints that depend on summary statistic information about the simul...
A Unified Approach to Quantum Contraction and Correlation Coefficients
Ian George, Marco Tomamichel·May 21, 2025
The maximal correlation coefficient measures the linear correlation in a bipartite distribution and contraction coefficients measure how much information is lost under a noisy channel. Remarkably, Raginsky established a close relation between these t...
An engineering guide to superconducting quantum circuit shielding
E. Malevannaya, V. Polozov, A. Ivanov +10 more·May 20, 2025
In this review, we provide a practical guide to superconducting quantum circuits protection from broadband electromagnetic and infrared radiation using cryogenic shielding and microwave line filtering. Recently, superconducting multi-qubit processors...
Fast and close Shannon entropy approximation
I. Horenko, Davide Bassetti, Lukás Pospísil·May 20, 2025
Shannon entropy (SE) and its quantum mechanical analogue von Neumann entropy are key components in many tools used in physics, information theory, machine learning (ML) and quantum computing. Besides of the significant amounts of SE computations requ...
Quantum Algorithms for Causal Estimands
Rishi Goel, Casey R. Myers, Sally Shrapnel·May 19, 2025
Modern machine learning (ML) methods typically fail to adequately capture causal information. Consequently, such models do not handle data distributional shifts, are vulnerable to adversarial examples, and often learn spurious correlations. Causal ML...
Learning Best Paths in Quantum Networks
Xuchuang Wang, Maoli Liu, Xutong Liu +4 more·May 19, 2025
Quantum networks (QNs) transmit delicate quantum information across noisy quantum channels. Crucial applications, like quantum key distribution (QKD) and distributed quantum computation (DQC), rely on efficient quantum information transmission. Learn...
Improving adiabatic quantum factorization via chopped random-basis optimization
Tian-Le Yang, Mo Xiong, Ming Xue +2 more·May 19, 2025
Integer factorization remains a significant challenge for classical computers and is fundamental to the security of RSA encryption. Adiabatic quantum algorithms present a promising solution, yet their practical implementation is limited by the short ...
Efficient Generation of Parameterised Quantum Circuits from Large Texts
C. Krawchuk, Nikhil Khatri, Neil John Ortega +1 more·May 19, 2025
Quantum approaches to natural language processing (NLP) are redefining how linguistic information is represented and processed. While traditional hybrid quantum-classical models rely heavily on classical neural networks, recent advancements propose a...
Quantum Entanglement is Quantum: ZZ Production at the LHC
Dorival Gonçalves, Ajay Kaladharan, Frank Krauss +1 more·May 17, 2025
Polarization and spin correlations in diboson systems serve as powerful tools for precision tests and searches for new physics. Recently, interpreting these observables through the lens of quantum information, for instance by examining whether the di...
Qubit based on 0-$\pi$ Josephson junctions
N. Stefanakis·May 17, 2025
We investigate the static properties of 0-$\pi$ Josephson junctions, with particular emphasis on their application in superconducting quantum circuits. Using a theoretical framework based on the sine-Gordon equation, we analyze the phase evolution fo...