Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Analytic gradients for low-rank quantum optimal control
Leo Goutte, Vincenzo Savona·Jul 15, 2026
We introduce low-rank optimal control (LROC), a method for designing control pulses in open quantum systems whose full density-matrix simulation is prohibitively expensive. The method exploits a feature of quantum computing itself: because protocols ...
Benchmarking quantum simulation at scale
Jeremy Hartse, Mohsin Raza, Shravan Shravan +2 more·Jul 15, 2026
The applications for which quantum computers will clearly outperform classical computers are still being identified and benchmarking such an advantage is challenging. We propose a scalable verification scheme for non-equilibrium quantum simulation ba...
Pair-Partition Constructions for CPM-Based Quantum LDPC Codes
Koki Okada, Kenta Kasai·Jul 15, 2026
We introduce the pair-partition (PP) construction of binary Calderbank--Shor--Steane quantum low-density parity-check codes from circulant permutation matrices. A square array of pair partitions imposes linear paired-difference equations on the CPM e...
Sail membranes for optomechanical accelerometry
Atkin D. Hyatt, Mitul Dey Chowdhury, Mahir Chowdhury +2 more·Jul 15, 2026
Strained membrane resonators have emerged as a promising platform for optomechanical accelerometry; however, the desired combination of low frequency and high $Q$-mass product requires a rethinking of their dissipation dilution engineering. Applying ...
Benchmarking trigonometric continuous-variable gate primitives with trapped ions
Tommaso Rainaldi, Jake Montgomery, Christopher G. Yale +8 more·Jul 15, 2026
Hybrid continuous-discrete-variable quantum processors can represent bosonic degrees of freedom directly in oscillator modes, or qumodes, while using qubits for control, readout, and nonlinear operations. Recently proposed trigonometric continuous-va...
Cluster-configurational study of G-center in Silicon
Narayan Pokhrel, Kyungwha Park, Vsevolod Ivanov·Jul 15, 2026
Understanding the properties of defects is imperative for proper use for variety of applications including quantum computing. In this paper, we use the multiconfigurational self consistent field (MCSCF) combined with DFT optimized geometry in order t...
Building Shor's Algorithm in Lean: An Agentic Formalization of Quantum Attacks on RSA-2048 and P-256
Lei Zhang, Yusheng Zhao, Hongshun Yao +1 more·Jul 15, 2026
Large language models are increasingly assisting with demanding formal theorem-proving tasks, particularly when grounded in machine-checked libraries such as Lean. Agentic systems further amplify this process by searching, reusing, and extending exis...
Reshaping quantum annealing landscapes with diagonal catalysts
Andrés N. Cáliz, Carlos Ramon-Escandell, Finnley Paolella +4 more·Jul 15, 2026
Quantum annealing is often limited by population trapped in local minima many spin flips from the solution. We introduce a mathematical framework to understand the connection between energy and Hamming distance in optimization problems. Using this, w...
Acoustic Firewalls: Analogue Gravity Perspective on the AMPS Paradox
Nikolay S. Akintsov, Artyom P. Nevecheria, Stepan N. Andreev +1 more·Jul 15, 2026
The monogamy of quantum entanglement, applied by Almheiri-Marolf-Polchinski-Sully (AMPS) to black holes, obstructs a smooth horizon vacuum after the Page time. We transcribe this argument to Hawking-like phonon radiation from a sonic horizon in the U...
Temporal Entanglement from Twist Correlators in 2d Conformal Field Theory and Holography
Alice Bernamonti, Federico Galli, Michal P. Heller +2 more·Jul 15, 2026
We formulate timelike entanglement entropy and its Rényi extension in two-dimensional conformal field theory through the analytic continuation of replica twist correlators to time-ordered, timelike-separated insertions. This field-theoretic construct...
Nonreciprocal Relaxation Acceleration
Xingyu Zhang, Yihan Ma, Yue Liu +5 more·Jul 15, 2026
Driven by recent discoveries regarding the quantum Mpemba effect, the anomalous relaxation dynamics of open quantum systems have garnered significant attention. While expediting thermalization to equilibrium has been extensively studied, dynamically ...
Universal Quantum Computation with Multi-Mode Schrödinger Cat States Stabilized by Non-Local Dissipation Engineering
Jesper Lind-Olsen, Jonas Lidal, Tron Omland +1 more·Jul 15, 2026
Schrödinger cat states provide a hardware-efficient platform for bosonic quantum error correction by encoding logical information in protected manifolds of harmonic oscillators. While previous work has demonstrated the dissipative stabilization of mu...
Temporal Fourier Optics Reveals Hidden Hybridized Light-Matter States
Juan-Feng Zhu, Wenjie Zhou, Shihao Feng +5 more·Jul 15, 2026
Spectral measurements provide fundamental insights into wave systems by revealing resonances, mode hybridization, and light-matter interactions. However, intrinsic dissipation and measurement-related spectral broadening often obscure the spectral sig...
Quantum observables for probabilistic classical particles
Christof Wetterich·Jul 15, 2026
The classical observables of position and momentum are not well adapted to particles in a microphysical situation where typical probability distributions are characterized by a substantial dispersion. We propose the use of more robust quantum observa...
A Reservoir Computing Approach to Quantum Gate Synthesis
Francesco Caravelli, Roberto Menta, Antonio Sannia·Jul 15, 2026
Quantum gate synthesis is essential for implementing quantum algorithms on real hardware, yet existing methods are often computationally demanding. Here, we introduce a novel approach based on reservoir computing, which we name Group Reservoir Comput...
Continuous limit of the square well problem in quantum mechanics
Matheus D. Moro, Thiago T. Tsutsui, Antonio S. M. de Castro +1 more·Jul 15, 2026
The free-particle and square-well potentials are two of the most emblematic problems in quantum mechanics, illustrating essential concepts such as matter waves, energy quantization, and bound states. It is therefore natural to consider how the free-p...
Phonon down-conversion by normal metals for superconducting devices
Guglielmo La Magna, Gianluigi Catelani·Jul 15, 2026
Thanks to low dissipation, superconducting devices are promising for a number of applications, such as detectors and implementations of quantum computation. However, their working can be adversely impacted by quasiparticles, which is why so-called qu...
A Lie-algebraic approach to non-Markovian quantum dynamics
Haijin Ding, Stephen S. -T. Yau, Zhiwen Zhang·Jul 15, 2026
In this paper, we study the non-Markovian quantum dynamics in quantum computations from the perspective of a Lie algebraic approach based on numerical analysis. By vectorizing the density matrix of quantum states, the non-Markovian evolutions can be ...
Quantum Topological Data Encoding
Adam Wesołowski, Dimitrios Thanos, Daniel Leykam +1 more·Jul 15, 2026
Many datasets encountered across a wide range of domains possess rich geometric and topological structure that is difficult to capture using conventional vector-based representations. Quantum machine learning offers the possibility of processing high...
Post-Critical Meson Dynamics of Kibble-Zurek Excitations in a 5,564-Qubit Quantum Annealer
Francis A. Bayocboc, Jacek Dziarmaga, Marek M. Rams +1 more·Jul 15, 2026
Quantum phase transitions provide a controlled route for generating many-body excitations, but the dynamics after the critical point can be as important as the initial defect creation. Recent progress in quantum annealing has made it possible to acce...