Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Worldline-Susceptibility Scheduling for Quantum Annealing Beyond Local-Adiabatic Evolution
Suraj Singh, Lakshya Nagpal, Vikas Chauhan +1 more·Jul 15, 2026
The performance of quantum annealing depends critically on how the available annealing time is distributed along the evolution. Although the Roland Cerf local adiabatic schedule is theoretically optimal, it requires complete knowledge of the instanta...
Emulation of Entanglement Distribution Networks on a Quantum Computer
Ashley N. Tittelbaugh, Jerry Horgan, Rohan Bali +4 more·Jul 15, 2026
We investigate how quantum computers can be used to emulate quantum networks and study their performance under practical impairments. In particular, we evaluate how degraded entanglement and communication latency affect teleportation-based distribute...
Fock-state preparation based on amplitude amplification in cavity QED
Sharoon Austin, Zhi-Yuan Wei, Kartik Srinivasan +1 more·Jul 15, 2026
In this work, we develop a coherent control technique for cavity QED based on amplitude amplification. We consider two physical platforms. In the first setting, we study a three-level quantum emitter coupled to a single mode of an optical cavity and ...
A Compass on the Quantum State Sphere: The Hopf Ansatz for Arbitrary Pure-State Optimization
Ruge Lin, Guangxi Li·Jul 15, 2026
Optimizing arbitrary quantum state vectors is like navigating the unit sphere in Hilbert space: beyond target reachability, optimization asks for coordinates, local distance information, and measurable directions. We introduce the Hopf ansatz, a bina...
Nonplanar qubit with tunable gauge symmetry
Muqing Yu, Han Bi, Hengli Lo +6 more·Jul 15, 2026
Circuit quantum electrodynamics embeds Josephson junction qubits within superconducting cavities, and has emerged as a leading approach to quantum computing and quantum simulation. Despite the many permutations of circuit geometry that have been expl...
Principles of Quantum Optimization for Constrained Problems
Einar Gabbassov, Gurpahul Singh, Achim Kempf·Jul 15, 2026
Constrained combinatorial optimization underlies many industrial and technological decision problems. We develop a spectral theory that unifies many quantum optimization algorithms. We show that computational slowdown is driven by entanglement restru...
Quantum many-body mixed phase space revealed by hybrid feedback control
Hang Dong, Jie Ren, Andrew Hallam +9 more·Jul 15, 2026
Understanding how complex systems transition between order and chaos is a central challenge of nonequilibrium physics. While weak perturbations of classical integrable systems give rise to a mixed phase space of coexisting regular and chaotic traject...
Magic Without Entanglement: Exact Revivals and Their Fisher Information Origin
Rishabh Jha, Karun Gadge·Jul 15, 2026
Magic and entanglement are independent quantum resources, yet their exact relation in many-body dynamics has remained elusive. We uncover two structural principles. First, at any stabilizer state, the curvature of the second stabilizer Rényi entropy ...
Non-perturbative saturation of Krylov complexity, and its implications in quantum gravity
Andrew Lucas, Amit Vikram·Jul 15, 2026
We study the dynamics of Krylov state complexity in finite-dimensional quantum systems. Orthogonal polynomials built on a discrete energy spectrum crowd away from regions where the density of states is low at large Krylov index. The physical implicat...
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 ...