Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Intrinsic Heisenberg-type lower bounds on spacelike hypersurfaces in general relativity
Thomas Schürmann·Oct 2, 2025
In quantum theory on curved backgrounds, Heisenberg's uncertainty principle is usually discussed in terms of ensemble variances and flat-space commutators. Here we take a different, preparation-based viewpoint tailored to sharp position measurements ...
Classification of Thouless pumps with non-invertible symmetries and implications for Floquet phases
Yabo Li, Matteo Dell'acqua, Aditi Mitra·Oct 2, 2025
We study symmetry preserving adiabatic and Floquet dynamics of one-dimensional systems. Using quasiadiabatic evolution, we establish a correspondence between adiabatic cycles and invertible defects generated by spatially truncated Thouless pump opera...
Higher moment theory and learnability of bosonic states
Joseph T. Iosue, Yu-Xin Wang, Ishaun Datta +4 more·Oct 2, 2025
We present a sample- and time-efficient algorithm to learn any bosonic Fock state acted upon by an arbitrary Gaussian unitary. As a special case, this algorithm efficiently learns states produced in Fock state BosonSampling, thus resolving an open qu...
Limitations of strong coupling in non-Markovian quantum thermometry
Qing-Shou Tan, Yang Liu, Xulin Liu +3 more·Oct 2, 2025
We investigate quantum thermometry using a single-qubit probe embedded in a non-Markovian environment, employing the numerically exact hierarchical equations of motion (HEOM) to overcome the limitations of Born-Markov approximations. Through a system...
Directionality and quantum backfire in continuous-time quantum walks from delocalized states: Exact results
Jefferson J. Ximenes, Marcelo A. Pires, José M. Villas-Bôas·Oct 2, 2025
We derive analytical results for continuous-time quantum walks from a new class of initial states with tunable delocalization. The dynamics are governed by a Hamiltonian with complex hopping amplitudes. We provide closed-form equations for key observ...
Analytic and Stochastic Approach to Quantum Advantages in Ground State and Quantum State Preparation Problems
Taehee Ko, Sungbin Lim·Oct 2, 2025
We study the problems of state preparation, ground state preparation and quantum state preparation. We propose an analytic approach to a stochastic quantum algorithm which prepares the ground state for $n$-qubit Hamiltonian that is represented by $\t...
Design and characterization of a cryogenic vacuum chamber for ion trapping experiments
D. M. Hartsell, J. M. Gray, C. M. Shappert +5 more·Oct 2, 2025
We present the design and characterization of a cryogenic vacuum chamber incorporating mechanical isolation from vibrations, a high numerical-aperture in-vacuum imaging objective, in-vacuum magnetic shielding, and an antenna for global radio-frequenc...
Variational approach to open quantum systems with long-range competing interactions
Dawid A. Hryniuk, Marzena H. Szymańska·Oct 2, 2025
Competition between short- and long-range interactions underpins many emergent phenomena in nature. Despite rapid progress in their experimental control, computational methods capable of accurately simulating open quantum many-body systems with compl...
Active-Learning Inspired $\textit{Ab Initio}$ Theory-Experiment Loop Approach for Management of Material Defects: Application to Superconducting Qubits
Sarvesh Chaudhari, Cristóbal Méndez, R. Choudhary +11 more·Oct 2, 2025
Surface oxides are associated with two-level systems (TLSs) that degrade the performance of niobium-based superconducting quantum computing devices. To address this, we introduce a predictive framework for selecting metal capping layers that inhibit ...
A low-circuit-depth quantum computing approach to the nuclear shell model
Chandan Sarma, P. Stevenson·Oct 2, 2025
In this work, we introduce a new qubit mapping strategy for the Variational Quantum Eigensolver (VQE) applied to nuclear shell model calculations, where each Slater Determinant (SD) is mapped to a qubit, rather than assigning qubits to individual sin...
Robust Rydberg facilitation via rapid adiabatic passage
Xinghan Wang, Yupeng Wang, Qi-Yu Liang·Oct 1, 2025
We propose and analyze a robust implementation of Rydberg antiblockade based on rapid adiabatic passage. Although Rydberg antiblockade offers key opportunities in quantum information processing and sensing, its sensitivity to position disorder and pa...
Anisotropic and non-additive interactions of a Rydberg impurity in a quantum bath
Aileen A. T. Durst, Seth T. Rittenhouse, H. R. Sadeghpour +1 more·Oct 1, 2025
We present a framework for treating anisotropic and non-additive impurity-bath interactions - features that are ubiquitous in realistic quantum impurity problems, but are often neglected in conventional approaches relying on additive, spherically sym...
Probability distributions over CSS codes: two-universality, QKD hashing, collision bounds, security
Pete Rigas·Oct 1, 2025
We characterize novel probability distributions for CSS codes. Such classes of error correcting codes, originally introduced by Calderbank, Shor, and Steane, are of great significance in advancing the fidelity of Quantum computation, with implication...
Emission of pairs of Minkowski photons through the lens of the Unruh effect
Juan V. O. Pêgas, Robert Bingham, Gianluca Gregori +1 more·Oct 1, 2025
We discuss the emission of pairs of photons by charges with generic worldlines in the Minkowski vacuum from the viewpoint of inertial observers and interpret them from the perspective of Rindler observers. We show that the emission of pairs of Minkow...
Isogeny Graphs in Superposition and Quantum Onion Routing
Eleni Agathocleous, Tobias Hartung, Karl Jansen +1 more·Oct 1, 2025
Onion routing provides anonymity by layering encryption so that no relay can link sender to destination. A quantum analogue faces a core obstacle: layered quantum encryption generally requires symmetric encryption schemes, whereas classically one wou...
Visualizing the state space and transformations of higher order quantum logics via toric geometry
Steven Bleiler, Shanyan Chen, Emma O'Neil +7 more·Oct 1, 2025
We propose some new uses of toric variety structures in the study of quantum computation for small radices. In particular, we observe the concurrence of the equivalence classes of quantum states under quantum measurement and the orbits of the toric g...
Coupling Magnons to an Opto-Electronic Parametric Oscillator
Junming Wu, Shihao Zhou, Benedetta Flebus +1 more·Oct 1, 2025
Hybrid magnonic systems have emerged as versatile modular components for quantum signal transduction and sensing applications owing to their capability of connecting distinct quantum platforms. To date, the majority of the magnonic systems have been ...
Optimal Quantum Information Transmission Under a Continuous-Variable Erasure Channel
Adam Taylor, Michael Hanks, Hyukjoon Kwon +1 more·Oct 1, 2025
Quantum capacity gives the fundamental limit of information transmission through a channel. However, evaluating the quantum capacities of a continuous-variable bosonic quantum channel, as well as finding an optimal code to achieve the optimal informa...
Quantum Signatures of Strange Attractors
Bence Dárdai, Gábor Vattay·Oct 1, 2025
In classical mechanics, driven systems with dissipation often exhibit complex, fractal dynamics known as strange attractors. This paper addresses the fundamental question of how such structures manifest in the quantum realm. We investigate the quantu...
Non-stabilizerness in quantum-enhanced metrological protocols
Tanausú Hernández-Yanes, Piotr Sierant, Jakub Zakrzewski +1 more·Oct 1, 2025
Non-stabilizerness (colloquially "magic") characterizes genuinely quantum (beyond-Clifford) operations necessary for preparation of quantum states, and can be measured by stabilizer Rényi entropy (SRE). For permutationally symmetric states, we show t...