Papers
Live trends in quantum computing research, updated daily from arXiv.
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22
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13,400 papers in 12 months (-22% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Evidence of magnetospheric vacuum birefringence in the polarized X-rays of a radio magnetar
Rachael E. Stewart, Hoa Dinh Thi, George Younes +13 more·Sep 23, 2025
The quantum electrodynamics (QED) theory predicts that the quantum vacuum becomes birefringent in the presence of ultra-strong magnetic fields -- a fundamental effect yet to be directly observed. Magnetars, isolated neutron stars with surface fields ...
Efficient and optimal quantum state discrimination via quantum belief propagation
Christophe Piveteau, Joseph M. Renes·Sep 23, 2025
We present an efficient quantum algorithm for a structured state discrimination problem we call the subspace decoding task. Building on this, we show that the algorithm enables efficient and optimal decoding of certain families of structured classica...
There and Back Again: A Gauging Nexus between Topological and Fracton Phases
Pranay Gorantla, Abhinav Prem, Nathanan Tantivasadakarn +1 more·Sep 23, 2025
Coupled layer constructions are a valuable tool for capturing the universal properties of certain interacting quantum phases of matter in terms of the simpler data that characterizes the underlying layers. In the study of fracton phases, the X-Cube m...
Quantum Dynamics of Electron Scattering from Skyrmions
Hareram Swain, Arijit Mandal, S. Satpathy +1 more·Sep 23, 2025
Scattering of electrons from chiral spin textures such as the skyrmions is an emerging research area due to its richness in topological quantum transport, which is significant for spintronic devices. We study the dynamical process of scattering of th...
Unifying framework for non-Hermitian and Hermitian topology in driven-dissipative systems
Clara C. Wanjura, Andreas Nunnenkamp·Sep 23, 2025
Recently, a one-to-one correspondence between non-trivial non-Hermitian topology and directional amplification has been demonstrated, theoretically and experimentally, for the case of one complex band. Here, we extend our framework to multiple bands ...
Interplay between many-body correlations, strain and lattice relaxation in twisted bilayer graphene
Lorenzo Crippa, Gautam Rai, Dumitru Călugăru +6 more·Sep 23, 2025
In twisted bilayer graphene, a unified understanding of the mechanisms governing temperature-dependent electronic spectra and thermodynamic properties remains controversial despite extensive theoretical efforts. Here, we present a comprehensive theor...
A vapor-cavity-QED system for quantum computation and communication
Sharoon Austin, Dhruv Devulapalli, Khoi Hoang +3 more·Sep 23, 2025
In this work, we propose performing key operations in quantum computation and communication using room-temperature atoms moving across a grid of high-quality-factor, small-mode-volume cavities. These cavities enable high-cooperativity interactions wi...
Uniqueness of Complementary Recovery in Holographic Error-Correcting Codes
Julia Jones, Jason Pollack·Sep 23, 2025
Holographic codes are a type of error-correcting code with extra geometric structure ensured by a ``complementary recovery'' property: given a division of the physical Hilbert space $\mathcal{H}$ into $\mathcal{H}_A$ and $\mathcal{H}_{\bar A}$, and a...
Not All Qubits are Utilized Equally
Jeremie Pope, Swaroop Ghosh·Sep 23, 2025
Improvements to the functionality of modern Noisy Intermediate-Scale Quantum (NISQ) computers have coincided with an increase in the total number of physical qubits. Quantum programmers do not commonly design circuits that directly utilize these qubi...
Non-equilibrium Dynamics of Two-level Systems directly after Cryogenic Alternating Bias
V. Iaia, E. S. Joseph, S. Im +10 more·Sep 23, 2025
Two-level systems (TLSs) are tunneling states commonly found in amorphous materials that electrically couple to qubits, resonators, and vibrational modes in materials, leading to energy loss in those systems. Recent studies suggest that applying a la...
Quantum Krylov Algorithm for Szegö Quadrature
William Kirby, Yizhi Shen, Daan Camps +3 more·Sep 23, 2025
We present a quantum algorithm to evaluate matrix elements of functions of unitary operators. The method is based on calculating quadrature nodes and weights using data collected from a quantum processor. Given a unitary $U$ and quantum states $|ψ_0\...
Who Let the Diamonds Out?
Vincent Halde, Olivier Bernard, Mathieu Brochu +5 more·Sep 23, 2025
Nitrogen-Vacancy (NV) center magnetometry is a highly promising quantum sensing technology, with early prototypes demonstrating impressive sensitivity in compact sensing heads. Yet, most existing implementations remain tied to laboratory setups, lack...
Quantum Autoencoder: An efficient approach to quantum feature map generation
Shengxin Zhuang, Yusen Wu, Xavier F. Cadet +6 more·Sep 23, 2025
Quantum machine learning methods often rely on fixed, hand-crafted quantum encodings that may not capture optimal features for downstream tasks. In this work, we study the power of quantum autoencoders in learning data-driven quantum representations....
Intrinsic Heisenberg Lower Bounds on Schwarzschild and Weyl-Class Spacelike Slices
Thomas Schürmann·Sep 23, 2025
We establish a coordinate-invariant Heisenberg-type lower bound for quantum states strictly localized in geodesic balls of radius $r_g$ on horizon-regular spacelike slices of static, spherically symmetric, asymptotically flat (AF) black-holes. Via a ...
Survival Probability in Quantum Conveyance: Effects of Adiabatic Tunneling and Acceleration Discontinuity
Yoshiaki Teranishi, Satoshi Morita, Seiji Miyashita·Sep 23, 2025
In the real-time manipulation of quantum states, it is necessary to dynamically control the parameters of the system's Hamiltonian. We have studied the survival probability during the conveyance of a particle by a trapping potential, where the partic...
Impact of Static Disorder and Dephasing on Quantum Transport in LH1-RC Models
Stephon Alexander, Roger Andrews, Oliver Fox +1 more·Sep 23, 2025
We numerically study excitation transfer in an artificial LH1-RC complex -- an $N$-site donor ring coupled to a central acceptor -- driven by a narrowband optical mode and evolved under a Lindblad master equation with loss and dephasing. In the absen...
Improving QAOA to find approximate QUBO solutions in O(1) shots
Andrey Yu. Chernyavskiy, Denis A. Kulikov, Boris I. Bantysh +3 more·Sep 23, 2025
We study a modified fixed-point version of the Quantum Approximate Optimization Algorithm (fpQAOA), in which parameters are trained on small instances and transferred to larger problems. Our scheme combines three key ingredients: (i) targeting approx...
High harmonic generation from a Bose-Einstein condensate
Philipp Stammer·Sep 23, 2025
Lasers provide intense coherent radiation, essential to cool and trap atoms into a Bose-Einstein condensate or can alternatively drive the non-linear dynamics of high-order harmonic generation. Yet, these two fundamental processes remained of indepen...
Quantum Annealing for Minimum Bisection Problem: A Machine Learning-based Approach for Penalty Parameter Tuning
Renáta Rusnáková, Martin Chovanec, Juraj Gazda·Sep 23, 2025
The Minimum Bisection Problem is a well-known NP-hard problem in combinatorial optimization, with practical applications in areas such as parallel computing, network design, and machine learning. In this paper, we examine the potential of using D-Wav...
Intrinsic-perturbation induced anomalous higher-order boundary states in non-Hermitian systems
Hui-Qiang Liang, Zuxuan Ou, Linhu Li +1 more·Sep 23, 2025
The behavior of higher-order boundary states in non-Hermitian systems is elusive and thereby finding the mechanism behind these states is both essential and significant. Here, we uncover a novel mechanism that induces anomalous higher-order boundary ...