Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Stochastic quantum adiabatic algorithm with fractional Brownian motion
Osanda Chinthila, Pani W Fernando, A. Mahasinghe +2 more·Apr 28, 2025
Adiabatic Quantum Computing relies on the quantum adiabatic theorem, which states that a quantum system evolves along its ground state with time if the governing Hamiltonian varies infinitely slowly. However, practical limitations force computations ...
Fooling the Decoder: An Adversarial Attack on Quantum Error Correction
J. Lenssen, A. Paler·Apr 28, 2025
Neural network decoders are becoming essential for achieving fault-tolerant quantum computations. However, their internal mechanisms are poorly understood, hindering our ability to ensure their reliability and security against adversarial attacks. Le...
Universal low-depth two-unitary design of programmable photonic circuits
S. A. Fldzhyan, M. Yu. Saygin, S. S. Straupe·Apr 27, 2025
The development of large-scale, programmable photonic circuits capable of performing generic matrix-vector multiplication is essential for both classical and quantum information processing. However, this goal is hindered by high losses, hardware erro...
The effect of the number of parameters and the number of local feature patches on loss landscapes in distributed quantum neural networks
Yoshiaki Kawase·Apr 27, 2025
Quantum neural networks hold promise for tackling computationally challenging tasks that are intractable for classical computers. However, their practical application is hindered by significant optimization challenges, arising from complex loss lands...
Spectral form factor of quadratic $R$-para-particle SYK model with Random Matrix Coupling
Tingfei Li·Apr 27, 2025
This paper investigates the spectral form factor (SFF) of the quadratic $R$-para-particle Sachdev-Ye-Kitaev ($R$-PSYK$_2$) model with various random matrix ensemble couplings. We generalize previous work on Gaussian Unitary Ensemble (GUE) couplings t...
A correspondence between the Rabi model and an Ising model with long-range interactions
Bruno Scheihing-Hitschfeld, Néstor Sepúlveda·Apr 27, 2025
By means of Trotter's formula, we show that transition amplitudes between a class of generalized coherent states in the Rabi model can be understood in terms of a certain Ising model featuring long-range interactions beyond nearest neighbors in its t...
Inverse-Transpilation: Reverse-Engineering Quantum Compiler Optimization Passes from Circuit Snapshots
Satwik Kundu, Swaroop Ghosh·Apr 27, 2025
Circuit compilation, a crucial process for adapting quantum algorithms to hardware constraints, often operates as a “black box,” with limited visibility into the optimization techniques used by proprietary systems or advanced open-source frameworks. ...
Classical simulation of parity-preserving quantum circuits
C. Wille, Sergii Strelchuk·Apr 27, 2025
We present a classical simulation method for fermionic quantum systems which, without loss of generality, can be represented by parity-preserving circuits made of two-qubit gates in a brick-wall structure. We map such circuits to a fermionic tensor n...
Quantum computation with the eigenstate thermalization hypothesis instead of wavefunction preparation
Thomas E. Baker·Apr 27, 2025
The eigenstate thermalization hypothesis connects a time-average of expectation values for non-integrable systems to the normalized trace of an operator. It is shown here that the hypothesis can be a suitable way to take an expectation value over an ...
Simulation of a rapid qubit readout dependent on the transmission of a single fluxon
Waltraut Wustmann, Kevin D. Osborn·Apr 26, 2025
The readout speed of qubits is a major limitation for error correction in quantum information science. We show simulations of a proposed device that gives readout of a fluxonium qubit using a ballistic fluxon with an estimated readout time of less th...
A Preliminary Investigation on the Usage of Quantum Approximate Optimization Algorithms for Test Case Selection
Antonio Trovato, Martin Beseda, Dario Di Nucci·Apr 26, 2025
Regression testing is key in verifying that software works correctly after changes. However, running the entire regression test suite can be impractical and expensive, especially for large-scale systems. Test suite optimization methods are highly eff...
Micromagnons and long-range entanglement in ferrimagnetic ground states
Marcin Wieśniak, Ankit Kumar, Idriss Hank Nkouatchoua Ngueya·Apr 25, 2025
While significant attention has been devoted to studying entanglement in photonic systems, solid-state spin lattices remain relatively underexplored. Motivated by this gap, we investigate the entanglement structure of one-dimensional ferrimagnetic ch...
Predicting sampling advantage of stochastic Ising Machines for Quantum Simulations
Rutger J. L. F. Berns, Davi R. Rodrigues, Giovanni Finocchio +1 more·Apr 25, 2025
Stochastic Ising machines, sIMs, are highly promising accelerators for optimization and sampling of computational problems that can be formulated as an Ising model. Here we investigate the computational advantage of sIM for simulations of quantum mag...
Measurement compatibility in multiparameter quantum interferometry
Jayanth Jayakumar, Marco Barbieri, Magdalena Stobińska·Apr 25, 2025
The Cramér-Rao bound captures completely the performance of single-parameter quantum sensors. On the other hand, its extension to multiple parameters demands more caution. Different aspects need to be captured at once, including, critically, compatib...
Large Language Model-Based Intelligent Antenna Design System
Tao Wu, Kexue Fu, Qiang Hua +2 more·Apr 25, 2025
Antenna simulation typically involves modeling and optimization, which are time-consuming and labor-intensive, slowing down antenna analysis and design. This paper presents a prototype of a large language model (LLM)-based antenna design system (LADS...
Parallelized Givens Ansatz for Molecular ground-states: Bridging Accuracy and Efficiency on NISQ Platforms
M. R. Nirmal, Ankit Khandelwal, Manoj Nambiar +1 more·Apr 25, 2025
In recent years, the Variational Quantum Eigensolver (VQE) has emerged as one of the most popular algorithms for solving the electronic structure problem on near-term quantum computers. The utility of VQE is often hindered by the limitations of curre...
Acoustic phonons, spin-phonon coupling and spin relaxation via the lattice reorientation mechanism in hexagonal germanium nanowires
Baksa Kolok, György Frank, András Pályi·Apr 25, 2025
Spin relaxation via electron-phonon interaction is an important decoherence mechanism for spin qubits. In this work, we study spin relaxation in hexagonal (2H) germanium, a novel direct-gap semiconductor showing great potential to combine highly cohe...
Determining Molecular Ground State with Quantum Imaginary Time Evolution using Broken-Symmetry Wave Function
Pawan Sharma Poudel, Kenji Sugisaki, Michal Hajdušek +1 more·Apr 25, 2025
The Hartree-Fock (HF) wave function, commonly used for approximating molecular ground states, becomes nonideal in open shell systems due to the inherent multi-configurational nature of the wave function, limiting accuracy in Quantum Imaginary Time Ev...
Entanglement Harvesting from Quantum Field: Insights via the Partner Formula
Yuki Osawa, Yasusada Nambu, Riku Yoshimoto·Apr 25, 2025
We examine the condition necessary for extracting entanglement from a quantum field through the use of two local modes A and B (detector modes). We show that Simon's entanglement criterion for the bipartite Gaussian state can be reformulated in terms...
Optimizing Resource Allocation in a Distributed Quantum Computing Cloud: A Game-Theoretic Approach
Bernard Ousmane Sane, Michal Hajdušek, Rodney Van Meter·Apr 25, 2025
Quantum cloud computing is essential for achieving quantum supremacy by utilizing multiple quantum computers connected via an entangling network to deliver high performance for practical applications that require extensive computational resources. Wi...