Papers
Live trends in quantum computing research, updated daily from arXiv.
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Optimized Many-Hypercube Codes toward Lower Logical Error Rates and Earlier Realization
Hayato Goto·Nov 29, 2025
Many-hypercube codes, concatenated ${[[n,n-2,2]]}$ quantum error-detecting codes ($n$ is even), have recently been proposed as high-rate quantum codes suitable for fault-tolerant quantum computing. While the original many-hypercube codes with ${n=6}$...
QSTAformer: A Quantum-Enhanced Transformer for Robust Short-Term Voltage Stability Assessment against Adversarial Attacks
Yang Li, Chong Ma, Yuanzheng Li +3 more·Nov 29, 2025
Short-term voltage stability assessment (STVSA) is critical for secure power system operation. While classical machine learning-based methods have demonstrated strong performance, they still face challenges in robustness under adversarial conditions....
Hybridization of pulse and continuous-wave based optical quantum computation
Tatsuki Sonoyama, Tomoki Sano, Takumi Suzuki +13 more·Nov 29, 2025
We propose a pulse and continuous wave (CW) hybrid architecture of continuous-variable measurement-based optical quantum computation utilizing the strengths of both pulsed and CW light. In this architecture, input and ancillary non-Gaussian quantum s...
Quantum Machine Learning for Secondary Frequency Control
Younes Ghazagh Jahed, Alireza Khatiri·Nov 29, 2025
Frequency control in power systems is critical to maintaining stability and preventing blackouts. Traditional methods like meta-heuristic algorithms and machine learning face limitations in real-time applicability and scalability. This paper introduc...
On the EPR paradox in systems with finite number of levels (Revised)
Henryk Gzyl·Nov 29, 2025
In this work we reexamine the EPR paradox for composite systems with a finite number of levels. The analysis emphasizes the connection between measurements and conditional probabilities. This connection implies that when a measurement is performed, t...
Quantum Sensing via Large Spin-Clusters in Solid-State NMR: Optimal coherence order for practical sensing
Conan Alexander, T S Mahesh·Nov 29, 2025
Quantum entanglement has long been recognized as an important resource for quantum sensing. In this work, we demonstrate the use of multiple-quantum solid-state NMR for quantum sensing by creating, manipulating, and detecting large clusters of correl...
Local distinguishability of five orthogonal product states on bipartite and tripartite quantum systems
Guang-Bao Xu, Zi-Yan Hao, Hua-Kun Wang +2 more·Nov 29, 2025
Local distinguishability of orthogonal quantum states can effectively reduce the consumption of quantum resources and lower economic costs in quantum protocols. Although numerous achievements have been made regarding local distinguishability of ortho...
A Concatenated Dual Displacement Code for Continuous-Variable Quantum Error Correction
Fucheng Guo, Frank Mueller, Yuan Liu·Nov 29, 2025
The continuous-variable (CV) Gaussian no-go theorem fundamentally limits the suppression of Gaussian displacement errors using only Gaussian gates and states. Prior studies have employed Gottesman-Kitaev-Preskill (GKP) states as ancillary qumodes to ...
Out-of-time correlation functions in single-body systems
Andrew C. Hunt·Nov 29, 2025
In the study of quantum chaos, `out of time ordered correlators' (OTOCs) are commonly used to quantify the rate at which quantum information is scrambled. This rate has been conjectured by Maldecena et al. to obey a universal, temperature dependent b...
Dispersion Outperforms Absorption: EIT-Enhanced Atomic Localization and Gradient Sensing with Super-Gaussian Beams
Mahboob Ul Haq·Nov 29, 2025
This work presents a comprehensive theoretical comparison between absorption-based and electromagnetically induced transparency (EIT)-based atomic gradient sensing in a four-level tripod system. Both methods were evaluated under identical and optimiz...
Four-body interactions in Kerr parametric oscillator circuits
Yohei Kawakami, Tomohiro Yamaji, Aiko Yamaguchi +9 more·Nov 29, 2025
We theoretically present new unit circuits of Kerr parametric oscillators (KPOs) with four-body interactions, which enable the scalable embedding of all-to-all connected logical Ising spins using the Lechner-Hauke-Zoller (LHZ) scheme. These unit circ...
UNIQ: Communication-Efficient Distributed Quantum Computing via Unified Nonlinear Integer Programming
Hui Zhong, Jiachen Shen, Lei Fan +4 more·Nov 29, 2025
Distributed quantum computing (DQC) is widely regarded as a promising approach to overcome quantum hardware limitations. A major challenge in DQC lies in reducing the communication cost introduced by remote CNOT gates, which are significantly slower ...
Precise computation of universal corner entanglement entropy at 2+1 dimension: From Ising to Gaussian quantum critical points
Ben Lee-Yeung Ngai, Justin Tim-Lok Chau, Junchen Rong +3 more·Nov 29, 2025
Computing the subleading logarithmic term in the entanglement entropy (EE) of (2+1)d quantum many-body systems remains a significant challenge, despite its central role in revealing universal information about quantum states and quantum critical poin...
Band inversion transition in HgTe nanowire grown along the [001] direction
Rui Li·Nov 29, 2025
The low-energy effective Hamiltonian of a cylindrical HgTe nanowire grown along the [001] crystallographic direction is constructed by using the perturbation theory. Both the anisotropic term and the bulk inversion asymmetry term of the Kane model ar...
Multi-Mode Quantum Memories for High-Throughput Satellite Entanglement Distribution
Connor Casey, Albert Williams, Catherine McCaffrey +2 more·Nov 29, 2025
Quantum networking seeks to enable global entanglement distribution through terrestrial and free space channels; however, the exponential loss in these channels necessitates quantum repeaters with efficient, long lived quantum memories (QMs). Space b...
On the Dynamics of Multiparticle Carroll-Schrdinger Quantum Systems
José Rojas, Melvin Arias·Nov 28, 2025
We study the dynamics of multiparticle Carroll-Schrödinger (CS) quantum systems in $1{+}1$ dimensions, where $x$ acts as the evolution variable and $t$ as the configuration coordinate. We derive the $N$-body theory on equal-$x$ slices as the Carrolli...
Searching for Ultralight Dark Matter with MOLeQuTE: a Massive Optically Levitated Quantum Tabletop Experiment
Louis Hamaide, Hannah Banks, Peter Barker +1 more·Nov 28, 2025
Many well theoretically motivated models of ultralight dark matter are expected to give rise to feeble oscillatory forces on macroscopic objects. Optically trapped sensors have high force sensitivities but have remained relatively unexplored in this ...
When the center matters: color screening and gluelumps in dihedral lattice gauge theories
Pavel P. Popov, Edoardo Ballini, Alberto Bottarelli +4 more·Nov 28, 2025
Confinement is one of the hallmarks of quantum chromodynamics (QCD). Yet, its first-principle characterization, even in simpler models, remains elusive. Through a combination of group-theoretical arguments and numerical analysis, we show that the phy...
Tailoring Bell inequalities to the qudit toric code and self testing
Eloïc Vallée, Owidiusz Makuta, Patrick Emonts +2 more·Nov 28, 2025
Bell nonlocality provides a robust scalable route to the efficient certification of quantum states. Here, we introduce a general framework for constructing Bell inequalities tailored to the $\mathbb{Z}_d$ toric code for odd prime local dimensions. Se...
RapunSL: Untangling Quantum Computing with Separation, Linear Combination and Mixing
Yusuke Matsushita, Kengo Hirata, Ryo Wakizaka +1 more·Nov 28, 2025
Quantum Separation Logic (QSL) has been proposed as an effective tool to improve the scalability of deductive reasoning for quantum programs. In QSL, separation is interpreted as disentanglement, and the frame rule brings a notion of entanglement-loc...