Papers
Live trends in quantum computing research, updated daily from arXiv.
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Extreme Capacities in Generalized Direct Sum Channels
Zhen Wu, Si-Qi Zhou·Oct 12, 2025
Quantum channel capacities play a central role in quantum Shannon theory, a formalism built upon rigorous coding theorems for noisy channels. Evaluating exact capacity values for general quantum channels remains intractable due to superadditivity. As...
Automated discovery of high-dimensional multipartite entanglement with photons that never interacted
Sören Arlt, Mario Krenn, Xuemei Gu·Oct 12, 2025
Quantum entanglement across spatially separated network nodes is conventionally established through the distribution of photons from a common source or via entanglement swapping that relies on Bell-state measurements and pre-shared entanglement. Path...
Quantum Radar: An Engineering Perspective
Murat Can Karakoc, Ozgun Ersoy, Ahmad Salmanoghli Khiavi +1 more·Oct 12, 2025
Quantum radar has emerged as a promising paradigm that utilizes entanglement and quantum correlations to overcome the limitations of classical detection in noisy and lossy environments. By exploiting microwave entanglement generated from superconduct...
Integrable Model of a Superconductor with non-Fermi liquid and Mott Phases
Santhosh M, Jorge Dukelsky, Gerardo Ortiz·Oct 12, 2025
We present and analyze an exactly solvable interacting fermionic pairing model, which features interactions that entangle states at momenta $\mathbf{k}$ and $-\mathbf{k}$. These interactions give rise to novel correlated ground states, leading to a r...
Quantum-Squeezing-Induced Algebraic Non-Hermitian Skin Effects and Ultra Spectral Sensitivity
Zhao-Fan Cai, Tao Liu·Oct 12, 2025
The well-established non-Bloch band theory predicts exponential localization of skin-mode eigenstates in one-dimensional (1D) non-Hermitian systems. Recent studies, however, have uncovered anomalous algebraic localization in higher dimensions. Here, ...
Liouvillian Exceptional Points in Quantum Brickwork Circuits
Vladislav Popkov, Mario Salerno·Oct 12, 2025
We demonstrate that Liouvillian exceptional points (LEPs), previously explored only in continuous Lindbladian dynamics, also emerge in discrete brickwork completely positive trace-preserving (CPTP) circuits. By analytically solving a minimal two-qubi...
On the Capacity of Distributed Quantum Storage
Hua Sun, Syed A. Jafar·Oct 12, 2025
A distributed quantum storage code maps a quantum message to N storage nodes, of arbitrary specified sizes, such that the stored message is robust to an arbitrary specified set of erasure patterns. The sizes of the storage nodes, and erasure patterns...
Uniformity Bias in Ground-State Sampling Induced by Replica Alignment in Quantum Monte Carlo for Quantum Annealing
Naoki Maruyama, Masayuki Ohzeki, Kazuyuki Tanaka·Oct 12, 2025
Quantum annealing (QA) with a transverse field often fails to sample degenerate ground states fairly, limiting applicability to problems requiring diverse optimal solutions. Although Quantum Monte Carlo (QMC) is widely used to simulate QA, its abilit...
Beating the standard quantum limit with single-photon-added coherent states
Pankaj K. Jha, Lakshya Nagpal, Amir Targholizadeh +2 more·Oct 12, 2025
The standard quantum limit (SQL), also known as the shot-noise limit, defines how quantum fluctuations of light constrain measurement precision. In a benchmark experiment using the Mach-Zehnder interferometer (MZI), where a coherent state with the av...
Dynamic control of resonance fluorescence in graphene quantum plasmonics
Ali A. Kamli, Sergey A. Moiseev, Jabir W. Hakami·Oct 12, 2025
The spectral and statistical properties are explored for surface plasmon (SP) emission in resonance fluorescence from a driven two level emitter in the proximity of 2D single graphene sheet. We derive an exact closed form analytic expression for the ...
One-Query Quantum Algorithms for the Index-$q$ Hidden Subgroup Problem
Amit Te'eni, Yaron Oz, Eliahu Cohen·Oct 12, 2025
The quantum Fourier transform (QFT) is central to many quantum algorithms, yet its necessity is not always well understood. We re-examine its role in canonical query problems. The Deutsch-Jozsa algorithm requires neither a QFT nor a domain group stru...
Gravitational and other shifts of whispering gallery and gravitational state interference patterns of light neutral particles
V. V. Nesvizhevsky, J. A. Pioquinto, K. Schreiner +7 more·Oct 12, 2025
We discuss small shifts in the interference patterns of gravitational and whispering gallery quantum states that can be observed with neutrons, atoms, antiatoms, muonium, positronium, and other particles. A gravitational shift of interference pattern...
Robust protocols to reveal anyonic time-exchange phase
Ines Safi·Oct 12, 2025
We consider hierarchical quantum Hall edge states with $N$ modes and a spatially local quantum point contact (QPC). In general, the field of an injected anyon does not directly acquire the universal statistical phase $θ$. Short-range inter-edge inter...
Quantum Integration Networks for Efficient Monte Carlo in High-Energy Physics
Heechan Yi, Kayoung Ban, Myeonghun Park +1 more·Oct 12, 2025
Monte Carlo methods play a central role in particle physics, where they are indispensable for simulating scattering processes, modeling detector responses, and performing multi-dimensional integrals. However, traditional Monte Carlo methods often suf...
Oscillator-qubit generalized quantum signal processing for vibronic models: a case study of uracil cation
Jungsoo Hong, Seong Ho Kim, Seung Kyu Min +1 more·Oct 12, 2025
Hybrid oscillator-qubit processors have recently demonstrated high-fidelity control of both continuous- and discrete-variable information processing. However, most of the quantum algorithms remain limited to homogeneous quantum architectures. Here, w...
Amplified Directional Photoluminescence from CIS Quantum Dots and hBN Quantum Emitters using Tunable BIC Metasurfaces
Omar A. M. Abdelraouf·Oct 12, 2025
Integrated and tunable light sources are critical for advancing quantum nanophotonic chips in quantum computing, communications, and sensing. However, efficient and tunable emission amplification post-fabrication poses major challenges. Hybrid metasu...
Spectral switching of autonomous quantum operations
Man Yin Cheung, Mona Berciu, Kyle Monkman·Oct 12, 2025
We introduce a framework for implementing quantum operations as steady states of a subsystem in an extended Hilbert space. Each operation has a spectral criterion for reaching the steady state. This adds a `spectral switch' mechanism to the emerging ...
Quantum NLP models on Natural Language Inference
Lin Sun, Peter Sullivan, Michael Martin +1 more·Oct 12, 2025
Quantum natural language processing (QNLP) offers a novel approach to semantic modeling by embedding compositional structure directly into quantum circuits. This paper investigates the application of QNLP models to the task of Natural Language Infere...
Electron Lateral Trapping Induced by Non-Uniform Thickness in Solid Neon Layers
Toshiaki Kanai, Chuanwei Zhang·Oct 11, 2025
Recent experimental advances highlight electron charge qubits floating above solid neon as an emerging promising platform for quantum computing, but the physical origin of single-electron lateral trapping is still not fully understood. While prior th...
Depth One Quantum Alternating Operator Ansatz as an Approximate Gibbs Distribution Sampler
Elijah Pelofske·Oct 11, 2025
This study numerically investigates the thermal sampling properties of QAOA, the Quantum Alternating Operator Ansatz which was generalized from the original Quantum Approximate Optimization Algorithm. Specifically, the ability of QAOA to sample from ...