Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
33,592
This Month
467
Today
0
Research Volume
16,601 papers in 12 months (-30% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Non-Inertial Response of Correlations: From Scalar Bell Observables to an Extended Correlation Tensor
Timur F. Kamalov·Aug 14, 2026
A standard Bell observable is a scalar correlation associated with a selected pair of local measurement directions. We formulate it as a projection of a complete two-particle correlation tensor and distinguish two angular sectors. The central result ...
Exchange-only qubit stabilized by a single-spin qubit
Irina Heinz, Mira Sharma, Joris Kattemölle·Aug 14, 2026
Hybrid approaches that combine different spin qubit encodings offer promising advantages. In particular, the additional degrees of freedom available in exchange-only qubits and their extensions enable enhanced spin lifetimes and facilitate error dete...
Foundation Neural Effective Hamiltonian for Strongly Correlated Quantum Materials
Lixing Zhang, Hongjie Jiang, Di Luo·Aug 14, 2026
Simulating strongly correlated quantum materials often involves not a single Hamiltonian, but a family of Hamiltonians whose ground states evolve across experimentally tunable couplings. Foundation neural quantum states (FNQS) offer a promising route...
Synthesizing In-Bulk Topological Corner States via Giant Atoms
Zhao-Min Gao, Xin Wang·Aug 14, 2026
Corner states in higher-order topological insulators are typically confined to geometric corners, limiting their flexibility for scalable quantum information processing. We propose a scheme to synthesize topological corner states at arbitrary positio...
Local geometry for Schmidt number witnesses
Young-Hoon Kiem, Seung-Hyeok Kye·Aug 14, 2026
Suppose that $F_E$ is the face of the convex set of all $m\otimes n$ bi-partite states which consists of states with ranges contained in a subspace $E$. For generic subspaces $E$ with a specific dimension, we use the result in [Phys. Rev. A 112 (2025...
The Organization of Environmental Coupling Shapes What Quantum Reservoirs Remember
Markus Baumann, Itamar Fink, Johannes Wittmann +2 more·Aug 14, 2026
For an open quantum reservoir, how the system forgets is part of how it computes. Quantum reservoir computing processes input streams with fixed quantum dynamics and trains only a linear readout. Dissipation can make old inputs fade, but prior studie...
Classical Limits of Spectral Filtering in Quantum Generative Models
Marco Roth·Aug 14, 2026
Spectral filtering has been proposed as a route to regularization in quantum generative models: the quantum Fourier transform exposes the amplitude spectrum of a quantum circuit Born machine, and a diagonal filter suppresses the high frequencies asso...
Photonic Quantum Computing vs. Classical Solvers in Constrained Factor Portfolio Optimization
Nirvik Sahoo, Chyng Wen Tee, Paul Robert Griffin·Aug 14, 2026
The authors present a rigorous empirical evaluation of three distinct optimization paradigms for institutional factor portfolio construction: an entropy-based photonic quantum annealer (Dirac-3, Quantum Computing Inc.), a commercial mixed-integer pro...
A groupoidal approach to quantum reference frames
Samuel Fedida, Alberto Ibort, Arnau Mas-Dorca·Aug 14, 2026
We develop the kinematical and operator-algebraic foundations of a groupoid-based relational quantum field theory (RQFT) on curved spacetimes. Indeed, the usual group-based quantum reference frame (QRF) formalism is not directly suited to generic cur...
Entanglement certification via causal-order interferometry in a quantum switch
Haojie Wang, Shuheng Liu, Qiongyi He·Aug 14, 2026
Entanglement certification is often performed on states that have already undergone noisy transmission or processing. Noise can reduce the surviving entanglement and can also cause a given criterion to fail even when entanglement remains. In this con...
Information-Calibrated Quantum Diffusion: Aligning Forward Noise with Reverse Recoverability
Qipeng Qian, Yuntao Qian·Aug 14, 2026
Quantum diffusion models typically parameterize forward corruption by raw channel strength, even though equal parameter increments need not erase equal information or induce comparable inverse problems. We introduce the classical--quantum information...
Non-Abelian geometry and globally inequivalent symmetry reductions of the cylindrical Dirac doublet
Zhongze Guo, Bei Xu, Qiang Gu·Aug 14, 2026
Different exact cylindrical Dirac constructions are locally related within the same two-dimensional positive-energy sector, suggesting that they might be merely alternative choices of basis. We show that this equivalence can fail globally. Treating t...
Circuit Depth Compression via Spectral Gap Amplification in Quantum Phase Estimation
Sk Mujaffar Hossain, Satadeep Bhattacharjee·Aug 14, 2026
We show that quantum phase estimation (QPE) circuits can be significantly compressed in depth by preprocessing the input operator with a sigmoid spectral filter before estimation. For systems with small spectral gaps Delta_lambda, standard QPE requir...
Limits of independent and identical measurements for quantum illumination with an unknown return phase
Ko Shiraiwa, Shingo Kukita·Aug 14, 2026
Quantum illumination exploits entanglement between a transmitted signal and a retained idler to improve the error-probability exponent of target detection by roughly a factor of four (6 dB) over that with a coherent state of the same transmitted ener...
Neural decoders for subsystem many-hypercube codes
Ryota Nakai, Hayato Goto·Aug 14, 2026
To maximize the potential of quantum error-correcting codes, it is essential to develop high-performance decoders. The subsystem many-hypercube (MHC) codes have been developed to achieve both high encoding rates and low-weight syndrome-measurements, ...
Maximizing Nonclassicality of Massive Objects via Quantum Zeno Effect
Debarshi Das, Pritam Roy, Marko Toroš +3 more·Aug 14, 2026
For testing quantum mechanics in the macroscopic domain, a major challenge is to devise effective means for enhancing the observable nonclassical signatures despite the ubiquitous presence of environmental decoherence. Toward this goal, we invoke the...
Cold-atom comagnetometry via optical control of spin states
J. -L. Zhang, W. -T. Luo, Y. A. Yang +3 more·Aug 14, 2026
Atomic spin-based comagnetometers are powerful tools for precision sensing and tests of fundamental physics. Compared with the widely used gas-cell comagnetometer systems, cold-atom systems offer access to much shorter distance scales and allow imple...
Hybrid Quantum-inspired Kolmogorov-Arnold Networks for Privacy-Aware Federated Biosignal Learning
Chun-Hua Lin, Samuel Yen-Chi Chen, Yu-Chao Hsu +7 more·Aug 14, 2026
Electrocardiogram (ECG) recordings are sensitive biomedical data, limiting the ability of hospitals and wearable devices to share raw signals for centralized model training. Federated learning addresses this practical privacy constraint by enabling c...
Robust Quantum Extremal Numbers
Wanchen Zhang, Zicheng Han, Xiande Zhang·Aug 14, 2026
Absolutely maximally entangled states require every reduction of at most half of the parties to be maximally mixed, a condition that is both rigid and often impossible for qubit systems. Previous work introduced the quantum extremal number, which max...
de Broglie-Bohm Dynamics with Schrödinger Source Fields: A Framework for Subquantum Theory
Said Mikki·Aug 14, 2026
We extend de Broglie--Bohm (dBB) pilot-wave theory by introducing a complex source field into the Schrödinger equation and examining its effects on quantum equilibrium and nonequilibrium dynamics. In dBB theory, the physical particle distribution P, ...