Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Towards Quantum Simulation of Rotating Nuclei using Quantum Variational Algorithms
Dhritimalya Roy, Somnath Nag·Jun 22, 2025
Quantum variational algorithms (QVAs) are increasingly potent tools for simulating quantum many-body systems on noisy intermediate-scale quantum (NISQ) devices. This work examines the application of the Variational Quantum Eigensolver (VQE) to four p...
Physics and computation: An insight from non-Hermitian quantum computing
Qi Zhang, Biao Wu·Jun 22, 2025
We elucidate the profound connection between physics and computation by proposing and examining the model of the non-Hermitian quantum computer (NQC). In addition to conventional quantum gates such as the Hadamard, phase, and CNOT gates, this model i...
Correlated Error Bursts in a Gap-Engineered Superconducting Qubit Array
V. Kurilovich, G. Roberts, L. S. Martin +17 more·Jun 22, 2025
One of the roadblocks towards the implementation of a fault-tolerant superconducting quantum processor is impacts of ionizing radiation with the qubit substrate. Such impacts temporarily elevate the density of quasiparticles (QPs) across the device, ...
Analysis of Photonic Circuit Losses with Machine Learning Techniques
A. N. Utama, S. C. K. Goh, Hongyu Li +4 more·Jun 22, 2025
Low-loss waveguides enable efficient light delivery in photonic circuits, which are essential for high-speed optical communications and scalable implementations of photonic quantum technologies. We study the effects of several fabrication and experim...
A Survey of Quantum Generative Adversarial Networks: Architectures, Use Cases, and Real-World Implementations
Mujahidul Islam, Serkan Turkeli, Fatih Ozaydin·Jun 22, 2025
Quantum Generative Adversarial Networks (QGANs) have emerged as a promising direction in quantum machine learning, combining the strengths of quantum computing and adversarial training to enable efficient and expressive generative modeling. This surv...
Crosstalk-Robust Dynamical Decoupling for Bipartite-Topology Quantum Processors
Ethan Hickman, Xiaodi Wu, G. Quiroz·Jun 22, 2025
We introduce a protocol that modifies dynamical decoupling (DD) sequences to be robust to static $ZZ$ crosstalk when implemented with bounded control on two-colorable qubit topologies. The protocol, which relies on modifications to the pulse timing, ...
Programmable Bell state generation in an integrated thin film lithium niobate circuit
Andreas Maeder, Robert J. Chapman, Alessandra Sabatti +3 more·Jun 22, 2025
Entanglement is central to quantum technologies such as cryptography, sensing, and computing. Photon pairs generated via nonlinear optical processes are excellent for preparing entangled states due to their long coherence times and compatibility with...
Quantum Magic in Discrete-Time Quantum Walk
Vikash Mittal, Yi-Ping Huang·Jun 21, 2025
Quantum magic, which accounts for the non-stabilizer content of a state, is essential for universal quantum computation beyond classically simulable resources. We investigate the generation and evolution of quantum magic in discrete-time quantum walk...
Erbium quantum memory platform with long optical coherence via back-end-of-line deposition on foundry-fabricated photonics
Shobhit Gupta, Robert M. Pettit, Ananthesh Sundaresh +7 more·Jun 21, 2025
Realizing scalable quantum interconnects necessitates the integration of solid-state quantum memories with foundry photonics processes. While prior photonic integration efforts have relied upon specialized, laboratory-scale fabrication techniques, th...
Quantum-Hybrid Support Vector Machines for Anomaly Detection in Industrial Control Systems
Tyler Cultice, Md. Saif Hassan Onim, Annarita Giani +1 more·Jun 21, 2025
Sensitive data captured by Industrial Control Systems (ICS) play a large role in the safety and integrity of many critical infrastructures. Detection of anomalous or malicious data, or Anomaly Detection (AD), with machine learning is one of many vita...
On the excitability of two-level atoms by spectrally encoded single-photon wave packets in quantum networks
Hamid Reza Naeij·Jun 20, 2025
We analyze the time-dependent interaction between a two-level atom and a spectrally encoded single-photon wave packet using the Heisenberg-Langevin equations and derive the atomic excitation probability. Spectral phase encoding broadens the photon wa...
Quantum optimization with exact geodesic transport
André J. Ferreira-Martins, Renato M. S. Farias, Giancarlo Camilo +6 more·Jun 20, 2025
We introduce an architecture for variational quantum algorithms that can be efficiently trained via parameter updates along exact geodesics on the Riemannian state manifold. This features a parameter-optimal circuit ansatz which supersedes known quan...
A competitive NISQ and qubit-efficient solver for the LABS problem
Marco Sciorilli, Giancarlo Camilo, Thiago O. Maciel +3 more·Jun 20, 2025
Pauli Correlation Encoding (PCE) is as a qubit-efficient variational approach to combinatorial optimization problems. The method offers a polynomial reduction in qubit count and a super-polynomial suppression of barren plateaus. Here, we extend the P...
Fault Tolerance by Construction
Benjamin Rodatz, Boldizsár Poór, Aleks Kissinger·Jun 20, 2025
A key challenge in fault-tolerant quantum computing is synthesising and optimising circuits in a noisy environment, as traditional techniques often fail to account for the effect of noise on circuits. In this work, we propose and numerically verify a...
Fidelity Relations in an Array of Neutral Atom Qubits -- Experimental Validation of Control Noise
Deon Janse van Rensburg, Robert de Keijzer, Rogier Venderbosch +5 more·Jun 20, 2025
Noise is a hindering factor for current-era quantum computers. In this study, we experimentally validate the theoretical relationships between amplitude noise of the control signal and qubit state fidelity. The experiment comprises a 10x10 site optic...
Toward an Experimental Device-Independent Verification of Indefinite Causal Order
Carla M. D. Richter, Michael Antesberger, Huan Cao +2 more·Jun 20, 2025
In classical physics, events follow a definite causal order: the past influences the future, but not the reverse. Quantum theory, however, permits superpositions of causal orders -- so-called indefinite causal orders -- which can provide operational ...
Enhancing Expressivity of Quantum Neural Networks Based on the SWAP test
Sebastian Nagies, Emiliano Tolotti, Davide Pastorello +1 more·Jun 20, 2025
Quantum neural networks (QNNs) based on parametrized quantum circuits are promising candidates for machine learning applications, yet many architectures lack clear connections to classical models, potentially limiting their ability to leverage establ...
Abelian multi-cycle codes for single-shot error correction
Hsiang-Ku Lin, Pak Kau Lim, Alexey A. Kovalev +1 more·Jun 20, 2025
We construct a family of quantum low-density parity-check codes locally equivalent to higher-dimensional quantum hypergraph-product (QHP) codes. Similarly to QHP codes, the proposed codes have highly redundant sets of low-weight stabilizer generators...
Weyl's Relations, Integrable Matrix Models and Quantum Computation
B. Sriram Shastry, Emil A. Yuzbashyan, Aniket Patra·Jun 20, 2025
Starting from a generalization of Weyl's relations in finite dimension $N$, we show that the Heisenberg commutation relations can be satisfied in a specific $N-1$ dimensional subspace, and display a linear map for projecting operators to this subspac...
Double Supersolid Phase in a Bosonic t-J-V Model with Rydberg Atoms
Kuangjie Chen, Yang Qi, Zheng Yan +1 more·Jun 20, 2025
Recent advances in Rydberg tweezer arrays bring novel opportunities for programmable quantum simulations beyond previous capabilities. In this work, we investigate a bosonic t-J-V model currently realized with Rydberg atoms. Through large-scale quant...