Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Decomposition of multi-qutrit gates generated by Weyl-Heisenberg strings
Daniele Trisciani, Marco Cattaneo, Zolt'an Zimbor'as·Jul 13, 2025
Decomposing unitary operations into native gates is an essential step for implementing quantum algorithms. For qubit-based devices, where native gates are typically single- and two-qubit operations, a range of decomposition techniques have been devel...
From research to resources: assessing student understanding and skills in quantum computing
B. Thacker, Jianlan Wang, Yuanlin Zhang +3 more·Jul 13, 2025
The revolutionary new field of quantum computing (QC) continues to gain attention in industry, academia, and government in both research and education. At educational institutions, there is a proliferation of introductory courses at various academic ...
Using a Kerr interaction for GKP magic state preparation
J'er'emie Boudreault, Ross Shillito, Jean‐Baptiste Bertrand +1 more·Jul 13, 2025
Magic state distillation and injection is a promising strategy towards universal fault tolerant quantum computation, especially in architectures based on the bosonic Gottesman-Kitaev-Preskill (GKP) codes where non-Clifford gates remain challenging to...
Long-ranged gates in quantum computation architectures with limited connectivity
Wolfgang Dür·Jul 11, 2025
We propose a quantum computation architecture based on geometries with nearest-neighbor interactions, including e.g. planar structures. We show how to efficiently split the role of qubits into data and entanglement-generation qubits. Multipartite ent...
Quantum register based on double quantum dots in semiconductor nanowires
V. Vyurkov, Leonid Fedichkin, I. Semenikhin +3 more·Jul 11, 2025
An implementation of a universal solid-state quantum register based on electron space states in field-defined double quantum dots (DQD possesses one electron in two adjacent tunnel bound dots) in an ultrathin semiconductor nanowire is discussed. To s...
Literature Review of the Effect of Quantum Computing on Cryptocurrencies using Blockchain Technology
Adi Mutha, Jitendra Sandu·Jul 11, 2025
With the advent of quantum computing, cryptocurrencies that rely on blockchain technology face mounting cryptographic vulnerabilities. This paper presents a comprehensive literature review evaluating how quantum algorithms—specifically Shor’s and Gro...
Testing time order and Leggett-Garg inequalities with noninvasive measurements on public quantum computers
Tomasz Rybotycki, Tomasz Białecki, Josep Batle +4 more·Jul 10, 2025
We demonstrate the first violation of the Leggett-Garg inequality and time-order noninvariance on public quantum computers using genuine noninvasive measurements. By gathering sufficiently large statistics, we have been able to violate Leggett-Garg i...
A Neural-Guided Variational Quantum Algorithm for Efficient Sign Structure Learning in Hybrid Architectures
Mengzhen Ren, Yu-Cheng Chen, Yangsen Ye +3 more·Jul 10, 2025
Variational quantum algorithms hold great promise for unlocking the power of near-term quantum processors, yet high measurement costs, barren plateaus, and challenging optimization landscapes frequently hinder them. Here, we introduce sVQNHE, a neura...
Gate Freezing Method for Gradient-Free Variational Quantum Algorithms in Circuit Optimization
Joona V. Pankkonen, L. Ylinen, M. Raasakka +2 more·Jul 10, 2025
Parameterized quantum circuits (PQCs) are pivotal components of variational quantum algorithms (VQAs), which represent a promising pathway to quantum advantage in noisy intermediate-scale quantum (NISQ) devices. PQCs enable flexible encoding of quant...
Parametrized Quantum Circuit Learning for Quantum Chemical Applications
G. Jones, Viki Kumar Prasad, U. Fekl +1 more·Jul 10, 2025
In the field of quantum machine learning (QML), parametrized quantum circuits (PQCs) -- constructed using a combination of fixed and tunable quantum gates -- provide a promising hybrid framework for tackling complex machine learning problems. Despite...
Evaluating Post-Quantum Cryptographic Algorithms on Resource-Constrained Devices
Jesus Lopez, Viviana Cadena, Mohammad Saidur Rahman·Jul 10, 2025
The rapid advancement of quantum computing poses a critical threat to classical cryptographic algorithms such as RSA and ECC, particularly in Internet of Things (IoT) devices, where secure communication is essential but often constrained by limited c...
Two Variations of Quantum Phase Estimation for Reducing Circuit Error Rates: Application to the Harrow--Hassidim--Lloyd Algorithm
Yonghae Lee, Minjin Choi, Youngho Min +2 more·Jul 9, 2025
We introduce two variations of the quantum phase estimation algorithm: quantum shifted phase estimation and quantum punctured phase estimation. The shifted method employs a bit-string left shift to discard the most significant bit and focus on lower-...
Flexible Readout and Unconditional Reset for Superconducting Multiqubit Processors with Tunable Purcell Filters.
Yongxi Xiao, Da'er Feng, Xuemei Gu +18 more·Jul 9, 2025
Achieving high-fidelity qubit readout and reset while maintaining qubit coherence is crucial for quantum error correction and advanced quantum algorithms. Here, we design and experimentally demonstrate a scalable architecture based on frequency-tunab...
Efficient Implementation of a Single-Qutrit Gate Set via Coherent Control
Xiangmin Yu, Xiang Deng, Wen Zheng +15 more·Jul 9, 2025
Qutrit offers the potential for enhanced quantum computation by exploiting an enlarged Hilbert space. However, the synthesis of high-fidelity and fast qutrit gates, particularly for single qutrit, remains an ongoing challenge, as it involves overcomi...
Low-depth quantum error correction via three-qubit gates in Rydberg atom arrays
Laura Pecorari, Sven Jandura, Guido Pupillo·Jul 8, 2025
Quantum error correction (QEC) requires the execution of deep quantum circuits with large numbers of physical qubits to protect information against errors. Designing protocols that can reduce gate and space-time overheads of QEC is therefore crucial ...
Trainability of Quantum Models Beyond Known Classical Simulability
S. Meyer, Francesco Scala, F. Tacchino +1 more·Jul 8, 2025
Variational Quantum Algorithms (VQAs) are promising candidates for near-term quantum computing, yet they face scalability challenges due to barren plateaus, where gradients vanish exponentially in the system size. Recent conjectures suggest that avoi...
Disentangling strategies and entanglement transitions in unitary circuit games with matchgates
Raúl Morral-Yepes, Marc Langer, Adam Gammon-Smith +2 more·Jul 7, 2025
In unitary circuit games, two competing parties, an "entangler" and a "disentangler", can induce an entanglement phase transition in a quantum many-body system. The transition occurs at a certain rate at which the disentangler acts. We analyze such g...
Asymptotically Good Quantum Codes with Addressable and Transversal Non-Clifford Gates
Zhiyang He, Vinod Vaikuntanathan, Adam Wills +1 more·Jul 7, 2025
Constructing quantum codes with good parameters and useful transversal gates is a central problem in quantum error correction. In this paper, we continue our work in arXiv:2502.01864 and construct the first family of asymptotically good quantum codes...
DYNAMO: Dynamic Neutral Atom Multi-programming Optimizer Towards Quantum Operating Systems
Wenjie Sun, Xiaoyu Li, Zhigang Wang +3 more·Jul 7, 2025
As quantum computing advances towards practical applications, quantum operating systems become inevitable, where multi-programming -- the core functionality of operating systems -- enables concurrent execution of multiple quantum programs to enhance ...
A Resource Efficient Quantum Kernel
Utkarsh Singh, Jean-Frédéric Laprade, Aaron Z. Goldberg +1 more·Jul 4, 2025
Quantum processors may enhance machine learning by mapping high-dimensional data onto quantum systems for processing. Conventional feature maps, for encoding data onto a quantum circuit are currently impractical, as the number of entangling gates sca...