Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Robust Universal Braiding with Non-semisimple Ising Anyons
Filippo Iulianelli, Sung Kim, Joshua Sussan +1 more·Sep 2, 2025
Non-semisimple extensions of the Ising anyon model developed in our previous work enable universal topological quantum computation via braiding alone, overcoming the Clifford-only limitation of semisimple theories. The non-semisimple theory provides ...
Geodesics of Quantum Feature Maps on the Space of Quantum Operators
Andrew Vlasic·Sep 2, 2025
Recent advancements in the discipline of quantum algorithms have displayed the importance of the geometry of quantum operators. Given this thrust, this paper develops a rigorous geometric framework to analyze how the Riemannian structure of data, und...
Optimizing digital quantum simulation of open quantum lattice models
Xie-Hang Yu, Hongchao Li, J. I. Cirac +1 more·Sep 2, 2025
Many-body systems arising in condensed matter physics and quantum optics inevitably couple to the environment and need to be modelled as open quantum systems. While near-optimal algorithms have been developed for simulating many-body quantum dynamics...
Tableau-Based Framework for Efficient Logical Quantum Compilation
Meng Wang, Chenxu Liu, Sean Garner +4 more·Sep 2, 2025
Quantum computing holds the promise of solving problems intractable for classical computers, but practical large-scale quantum computation requires error correction to protect against errors. Fault-tolerant quantum computing (FTQC) enables reliable e...
CNOT Oriented Synthesis for Small-Scale Boolean Functions Using Spatial Structures of Parallelotopes
Qiang Zheng, Yongzhen Xu, Jiaxi Zhang +2 more·Sep 2, 2025
Quantum computing has garnered significant interest for its potential to achieve exponential speedups over classical approaches. However, in the Noisy Intermediate-Scale Quantum (NISQ) era, quantum circuit scalability remains limited by gate fidelity...
Cutting stabiliser decompositions of magic state cultivation with ZX-calculus
Kwok Ho Wan, Zhenghao Zhong·Sep 1, 2025
We apply the cutting stabiliser decomposition techniques [arXiv:2403.10964] to the quantum states generated from magic state cultivation [arXiv:2409.17595], post-selected upon all $+1$ measured values for simplicity. The resultant states to the $d=3$...
Implementing Pearl's $\mathcal{DO}$-Calculus on Quantum Circuits: A Simpson-Type Case Study on NISQ Hardware
Pilsung Kang·Aug 31, 2025
Distinguishing correlation from causation is a central challenge in machine intelligence, and Pearl's $\mathcal{DO}$-calculus provides a rigorous symbolic framework for reasoning about interventions. A complementary question is whether such intervent...
Quantum Circuit Optimization for the Fault-Tolerance Era: Do We Have to Start from Scratch?
Tobias Forster, Nils Quetschlich, Robert Wille·Aug 30, 2025
Quantum computing has made significant advancements in the last years in both hardware and software. Unfortunately, the currently available Noisy Intermediate-Scale Quantum (NISQ) hardware is still heavily affected by noise. Many optimization techniq...
Schrödinger's Toolbox: Exploring the Quantum Rowhammer Attack
Devon Campbell·Aug 30, 2025
Residual cross-talk in superconducting qubit devices creates a security vulnerability for emerging quantum cloud services. We demonstrate a Clifford-only Quantum Rowhammer attack—using just $X$ and CNOT gates—that injects faults on IBM's 127-qubit Ea...
Block Encoding of Sparse Matrices via Coherent Permutation
Abhishek Setty·Aug 29, 2025
Block encoding of sparse matrices underpins powerful quantum algorithms such as quantum singular value transformation, Hamiltonian simulation, and quantum linear solvers, yet its efficient gate-level realization for general sparse matrices remains a ...
Accelerating Transpilation in Quantum Machine Learning with Haiqu's Rivet-transpiler
Aleksander Kaczmarek, Dikshant Dulal·Aug 29, 2025
Transpilation is a crucial process in preparing quantum circuits for execution on hardware, transforming virtual gates to match device-specific topology by introducing swap gates and basis gates, and applying optimizations that reduce circuit depth a...
Digital quantum simulation of many-body systems: Making the most of intermediate-scale, noisy quantum computers
Alexander Miessen·Aug 29, 2025
Quantum mechanical problems are among the hardest to simulate and, in some cases, remain intractable even for the most powerful computers. Quantum computing has emerged as a new technological platform to address such challenges, with rapid advances i...
Multimode rotationally symmetric bosonic codes from group-theoretic construction
Rabsan Galib Ahmed, Adithi Udupa, Giulia Ferrini·Aug 28, 2025
We introduce a new family of multi-mode, rotationally symmetric bosonic codes inspired by the group-theoretic framework of [Phys. Rev. Lett. 133, 240603 (2024)]. Such a construction inverts the traditional paradigm of code design by identifying codes...
Heisenberg spin networks for realizing quantum battery with the aid of Dzyaloshinskii Moriya interaction
Suprabha Bhattacharya, Vivek Balasaheb Sabale, Atul Kumar·Aug 28, 2025
This work investigates the energy storage properties of quantum spin chains in the context of quantum batteries by introducing Heisenberg spin network models organized into different configurations, open, closed, supercube geometries, and c regular g...
Crosstalk Insensitive Trapped-Ion Entanglement through Coupling Matrix Engineering
Vikram Kashyap, Caleb Walton, Sara Mouradian·Aug 28, 2025
Optical crosstalk due to imperfect addressing in trapped-ion entangling gates generates unwanted non-local entanglement between target ions and their neighbors that is difficult to mitigate using standard quantum error correction. We present a method...
Overhead in quantum circuits with time-multiplexed qubit control
M. Richter, Ingrid Strandberg, Simone Gasparinetti +1 more·Aug 28, 2025
When scaling up quantum processors in a cryogenic environment, it is desirable to limit the number of qubit drive lines going into the cryostat, since fewer lines makes cooling of the system more manageable and the need for complicated electronics se...
Unitary Synthesis with AlphaZero via Dynamic Circuits
Xavier Valcarce, Bastien Grivet, Nicolas Sangouard·Aug 28, 2025
Unitary synthesis is the process of decomposing a target unitary transformation into a sequence of quantum gates. This is a challenging task, as the number of possible gate combinations grows exponentially with the circuit depth. In this manuscript, ...
Louvre: Relaxing Hardware Requirements of Quantum LDPC Codes by Routing with Expanded Quantum Instruction Set
Runshi Zhou, Fang Zhang, Hui-Hai Zhao +3 more·Aug 28, 2025
Generalized bicycle codes (GB codes) represent a promising family of quantum low-density parity-check codes, characterized by high code rates and relatively local qubit connectivity. A subclass of the GB code called bivariate bicycle codes (BB codes)...
Spectral Gaps with Quantum Counting Queries and Oblivious State Preparation
Almudena Carrera Vazquez, Aleksandros Sobczyk·Aug 28, 2025
Approximating the $k$-th spectral gap $\Delta_k=|\lambda_k-\lambda_{k+1}|$ and the corresponding midpoint $\mu_k=\frac{\lambda_k+\lambda_{k+1}}{2}$ of an $N\times N$ Hermitian matrix with eigenvalues $\lambda_1\geq\lambda_2\geq\ldots\geq\lambda_N$, i...
Compilation-informed probabilistic logical-error cancellation
Giancarlo Camilo, Thiago O. Maciel, Allan Tosta +4 more·Aug 27, 2025
The potential of quantum computers to outperform classical ones in practically useful tasks remains challenging in the near term due to scaling limitations and high error rates of current quantum hardware. While quantum error correction (QEC) offers ...