Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Finding Photonics Circuits via $δ$-weakening SMT
Marco Lewis, Benoît Valiron·Sep 15, 2025
For quantum computers based on photonics, one main problem is the synthesis of a photonic circuit that emulates quantum computing gates. The problem requires using photonic components to build a circuit that act like a quantum computing gate with som...
Efficient Preparation of Decoherence Free Subspace Basis States
Zi-Ming Li, Yu-xi Liu·Sep 15, 2025
Decoherence-free subspace (DFS) provides a crucial mechanism for passive error mitigation in quantum computation by encoding information within symmetry-protected subspaces of the Hilbert space, which are immune from collective decoherence. Construct...
Observation of quantum-field-theory dynamics on a spin-phonon quantum computer
Anton T. Than, Saurabh V. Kadam, Vinay Vikramaditya +5 more·Sep 14, 2025
Simulating out-of-equilibrium dynamics of quantum field theories in nature is challenging with classical methods, but is a promising application for quantum computers. Unfortunately, simulating interacting bosonic fields involves a high boson-to-qubi...
Prediction of Stocks Index Price using Quantum GANs
Sangram Deshpande, Gopal Ramesh Dahale, Sai Nandan Morapakula +1 more·Sep 14, 2025
This paper investigates the application of Quantum Generative Adversarial Networks (QGANs) for stock price prediction. Financial markets are inherently complex, marked by high volatility and intricate patterns that traditional models often fail to ca...
Quantum Functional Information through the Evolution of Random Circuits
Rodrigo Pasti, Jonas Krause·Sep 14, 2025
We introduce Quantum Functional Information (QFI), a new metric to quantify the rarity and utility of quantum states and circuits. Unlike standard measures such as fidelity or entropy, QFI captures the balance between functionality and rarity within ...
Neural Decoders for Universal Quantum Algorithms
J. Pablo Bonilla Ataides, Andi Gu, Susanne F. Yelin +1 more·Sep 14, 2025
Fault-tolerant quantum computing demands decoders that are fast, accurate, and adaptable to circuit structure and realistic noise. While machine learning (ML) decoders have demonstrated impressive performance for quantum memory, their use in algorith...
Diagnosing Quantum Circuits: Noise Robustness, Trainability, and Expressibility
Yuguo Shao, Zhenyu Chen, Zhaohui Wei +1 more·Sep 14, 2025
Achieving practical quantum advantage on near-term noisy hardware is a central goal of quantum computation. However, without efficient pre-execution diagnostics, circuit design and scheme selection often rely on costly hardware-in-the-loop trial-and-...
Gradients, parallelism, and variance of quantum estimates
Francesco Preti, Michael Schilling, József Zsolt Bernád +3 more·Sep 14, 2025
Computation of observables and their gradients on near-term quantum hardware is a central aspect of any quantum algorithm. In this work, we first review standard approaches to the estimation of observables with and without quantum amplitude estimatio...
Measuring pulse heating in Si quantum dots with individual two-level fluctuators
Feiyang Ye, Lokendra S. Dhami, John M. Nichol·Sep 13, 2025
To encode quantum information in semiconductor spin qubits, voltage pulses are necessary for initialization, gate operation, and readout. However, these pulses dissipate heat, shifting spin-qubit frequencies and reducing gate fidelities. The cause of...
Toward Minimum Graphic Parity Networks
Yixin Cao, Yiren Lu, Junhong Nie +2 more·Sep 12, 2025
Quantum circuits composed of CNOT and $R_z$ are fundamental building blocks of many quantum algorithms, so optimizing the synthesis of such quantum circuits is crucial. We address this problem from a theoretical perspective by studying the graphic pa...
Explaining the Reputational Risks of AI-Mediated Communication: Messages labeled as AI-assisted are viewed as less diagnostic of the sender's moral character
Pranav Khadpe, Kimi Wenzel, George Loewenstein +1 more·Sep 11, 2025
When someone sends us a thoughtful message, we naturally form judgments about their character. But what happens when that message carries a label indicating it was written with the help of AI? This paper investigates how the appearance of AI assistan...
Ergotropic advantage in a measurement-fueled quantum heat engine
Sidhant Jakhar, Ramandeep S. Johal·Sep 11, 2025
This paper investigates a coupled two-qubits heat engine fueled by generalized measurements of the spin components and using a single heat reservoir as sink. Our model extends the proposal of Yi and coworkers [Phys. Rev. E {\bf 96}, 022108 (2017)] wh...
Diabatic quantum annealing for training energy-based generative models
Gilhan Kim, Ju-Yeon Gyhm, Daniel K. Park·Sep 11, 2025
Energy-based generative models, such as restricted Boltzmann machines (RBMs), require unbiased Boltzmann samples for effective training. Classical Markov chain Monte Carlo methods, however, converge slowly and yield correlated samples, making large-s...
Resource quantification for programming low-depth quantum circuits
Entong He, Yuxiang Yang·Sep 11, 2025
Noisy intermediate-scale quantum (NISQ) devices pave the way to implement quantum algorithms that exhibit supremacy over their classical counterparts. Due to the intrinsic noise and decoherence in the physical system, NISQ computations are naturally ...
Quantum Coherence and Anomalous Work Extraction in Qubit Gate Dynamics
Francesco Perciavalle, N. Gullo, Francesco Plastina·Sep 11, 2025
We develop a framework based on the Kirkwood-Dirac quasiprobability distribution to quantify the contribution of coherence to work extraction during generic, cyclic quantum evolutions. In particular, we focus on ``anomalous processes'', counterintuit...
Simulating magic state cultivation with few Clifford terms
Kwok Ho Wan, Zhenghao Zhong, Ainhoa Zapirain·Sep 10, 2025
Building upon [arXiv:2509.01224], we present a few methods on how to simulate the non-Clifford $d=5$ magic state cultivation circuits [arXiv:2409.17595] with a sum of $\approx 8$ Clifford ZX-diagrams on average, at $0.1\%$ noise. Compared to a magic ...
Addressing requirements for crosstalk-free quantum-gate operation in many-body nanofiber cavity QED systems
Tim Keller, Seigo Kikura, Rui Asaoka +3 more·Sep 10, 2025
A distributed network architecture in which flying photons connect individual modules containing stationary atomic qubits is a promising approach for scaling up neutral-atom based quantum-computing platforms. We consider an all-fiber based platform c...
Evolutionary-Based Circuit Optimization for Distributed Quantum Computing
Leo Sunkel, Jonas Stein, Gerhard Stenzel +3 more·Sep 9, 2025
In this work, we evaluate an evolutionary algorithm (EA) to optimize a given circuit in such a way that it reduces the required communication when executed in the Distributed Quantum Computing (DQC) paradigm. We evaluate our approach for a state prep...
Measuring the non-Abelian Quantum Phase with the Algorithm of Quantum Phase Estimation
Seng Ghee Tan, Son-Hsien Chen, Ying-Cheng Yang +3 more·Sep 9, 2025
We propose an approach to measure the quantum phase of an electron in a non-Abelian system using the algorithm of Quantum Phase Estimation (QPE). The discrete-path systems were previously studied in the context of square or rectangular rings. Present...
Improving fermionic variational quantum eigensolvers with Majorana swap networks
D. Fisher, S. Fldzhyan, D. V. Minaev +2 more·Sep 9, 2025
Simulating computationally hard fermionic systems is a promising application of quantum computing. However, mapping nonlocal fermionic operators to qubits often produces deep circuits, rendering such simulations impractical on near-term hardware. We ...