Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Model Reduction for Controlled Quantum Markov Dynamics
Tommaso Grigoletto, Lorenza Viola, Francesco Ticozzi·Oct 29, 2025
We consider the problem of model reduction for Markovian quantum systems whose dynamics are described by a time-dependent Lindblad generator -- notably, as arising in the presence of external control. Our approach, which builds upon Krylov operator s...
Super-Moiré Spin Textures in Twisted Antiferromagnets
King Cho Wong, Ruoming Peng, Eric Anderson +15 more·Oct 29, 2025
Stacking two-dimensional (2D) layered materials offers a powerful platform to engineer electronic and magnetic states. In general, the resulting states, such as Moiré magnetism, have a periodicity at the length scale of the Moiré unit cell. Here, we ...
Second-order Stark shifts exceeding 10$\,$GHz in electrically contacted SiV$^-$ centers in diamond
Manuel Rieger, Nori N. Chavira Leal, Rubek Poudel +7 more·Oct 29, 2025
Negatively charged silicon vacancy centers (SiV$^-$) in diamond exhibit excellent spin coherence and optical properties, making them promising candidates for quantum technologies. However, the strain-induced inhomogeneous distribution of optical tran...
Next-generation interferometry with gauge-invariant linear optical scatterers
Christopher R. Schwarze, Anthony D. Manni, David S. Simon +2 more·Oct 29, 2025
Measurement technology employing optical interference phenomena such as a fringe pattern or frequency shift has been evolving for more than a century. The systems are being designed better, and their components are being built better. But the major c...
Dynamics of entanglement fluctuations and quantum Mpemba effect in the $ν=1$ QSSEP model
Angelo Russotto, Filiberto Ares, Pasquale Calabrese +1 more·Oct 29, 2025
We study the out-of-equilibrium dynamics of entanglement fluctuations in the $ν=1$ Quantum Symmetric Simple Exclusion Process, a free-fermion chain with hopping amplitudes that are stochastic in time but homogeneous in space. Previous work showed tha...
Decoherence Estimation of Superconducting Qubit
Yoav Koral, Shilo Avraham, Manimuthu Peryasamy +2 more·Oct 29, 2025
Decoherence of quantum bits arises primarily from the parasitic resistance within the qubit. This study presents the analysis of the decoherence process due to physical interactions between the qubit photons and parasitic resistance atoms, utilizing ...
On the injective norm of random fermionic states and skew-symmetric tensors
Stephane Dartois, Parham Radpay·Oct 29, 2025
We study the injective norm of random skew-symmetric tensors and the associated fermionic quantum states, a natural measure of multipartite entanglement for systems of indistinguishable particles. Extending recent advances on random quantum states, w...
Detuning Choice for solving MIS and MWIS
Sem Saada Khelkhal, Louis Barcikowsky·Oct 29, 2025
We address the realization of Maximum Weighted Independent Set (MWIS) and quantum Maximum Independent Set (MIS) problems under Pasqal's neutral-atom QPU constraints: limited qubit number, bounds on Ω and Δ, sequence duration, confinement space, minim...
Generalized collective quantum tomography: algorithm design, optimization, and validation
Shuixin Xiao, Yuanlong Wang, Zhibo Hou +6 more·Oct 29, 2025
Quantum tomography is a fundamental technique for characterizing, benchmarking, and verifying quantum states and devices. It plays a crucial role in advancing quantum technologies and deepening our understanding of quantum mechanics. Collective quant...
Quantum Fisher Information With General Quantum Coherence in multi-dimensional quantum systems
Jun-Long Zhao, Li Yu, Ming Yang +1 more·Oct 29, 2025
Quantum metrology is a science about quantum measurements and it plays a key role in precision of quantum parameter estimation. Meanwhile, quantum coherence is an important quantum feature and quantum Fisher information (QFI) is an important indicato...
Variational quantum computing for quantum simulation: principles, implementations, and challenges
Lucas Q. Galvão, Anna Beatriz M. de Souza, Marcelo A. Moret +1 more·Oct 29, 2025
This work presents a comprehensive overview of variational quantum computing and their key role in advancing quantum simulation. This work explores the simulation of quantum systems and sets itself apart from approaches centered on classical data pro...
Group Representations of Lorentz Transformations Extended to Superluminal Observers
Marco Zaopo·Oct 29, 2025
We construct an extension of the proper orthochronous Lorentz group that includes space-time transformations for observers moving with superluminal relative velocities in arbitrary direction. This extension is generated by a realization of the Klein ...
Immobile and mobile excitations of three-spin interactions on the diamond chain
M. Bayer, M. Vieweg, K. P. Schmidt·Oct 29, 2025
We present a solvable one-dimensional spin-1/2 model on the diamond chain featuring three-spin interactions, which displays both, mobile excitations driving a second-order phase transition between an ordered and a $\mathbb{Z}_2$-symmetry broken phase...
Quantum-correlated photons from spectrally-separated modes of a cavity coupled to a strongly-driven two-level atom
Alex Elliott, Jacob Ngaha, Scott Parkins +1 more·Oct 29, 2025
Photon counting statistics are explored, theoretically, from a pair of cavity modes coupled to the fluorescent transitions in a strongly-driven two-level atom. We show that the cavity modes acquire nonclassical photon statistics that are representati...
Imaginarity measures induced by real part states and the complementarity relations
Jingyan Liu, Yue Sun, Jianwei Xu +1 more·Oct 29, 2025
Complex numbers are indispensable in quantum mechanics and the resource theory of imaginarity has been developed recently. In this paper, we propose a method to construct imaginary measures by real part states. Specifically, we propose an imaginarity...
Design and Fabrication of Metal-Shielded Fiber-Cavity Mirrors for Ion-Trap Systems
Wei-Bin Chen, Ding Fang, Cheng-Hao Zhang +4 more·Oct 29, 2025
Trapped ions in micro-cavities constitute a key platform for advancing quantum information processing and quantum networking. By providing an efficient light-matter interface within a compact architecture, they serve as highly efficient quantum nodes...
Statistical mechanics from quantum envariance and exchange symmetry
Amul Ojha, Shubhit Sardana, Arnab Ghosh·Oct 29, 2025
We build on the foundational work of Deffner and Zurek [S. Deffner and W. H. Zurek, New J. Phys. 18, 063013 (2016)] to show how central equilibrium structures of statistical mechanics can be understood within standard quantum mechanics using the conc...
Encoding computationally hard problems in triangular Rydberg atom arrays
Xi-Wei Pan, Huan-Hai Zhou, Yi-Ming Lu +1 more·Oct 29, 2025
Rydberg atom arrays are a promising platform for quantum optimization, encoding computationally hard problems by reducing them to independent set problems with unit-disk graph topology. In Nguyen et al., PRX Quantum 4, 010316 (2023), a systematic and...
Decoder Switching: Breaking the Speed-Accuracy Tradeoff in Real-Time Quantum Error Correction
Riki Toshio, Kaito Kishi, Jun Fujisaki +3 more·Oct 29, 2025
The realization of fault-tolerant quantum computers hinges on the construction of high-speed, high-accuracy, real-time decoding systems. The persistent challenge lies in the fundamental trade-off between speed and accuracy: efforts to improve the dec...
Platform Architecture for Tight Coupling of High-Performance Computing with Quantum Processors
Shane A. Caldwell, Moein Khazraee, Elena Agostini +27 more·Oct 29, 2025
We propose an architecture, called NVQLink, for connecting high-performance computing (HPC) resources to the control system of a quantum processing unit (QPU) to accelerate workloads necessary to the operation of the QPU. We aim to support every phys...