Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Squeezed-Light-Enhanced Multiparameter Quantum Estimation in Cavity Magnonics
Hamza Harraf, Mohamed Amazioug, Rachid Ahl Laamara·Jan 20, 2026
Improving multiparameter quantum estimation in magnonic systems via quantum noise suppression is a well-established and critical research objective. In this work, we propose an experimentally realistic scheme to improve the precision of simultaneousl...
Quantum simulation of general spin-1/2 Hamiltonians with parity-violating fermionic Gaussian states
Michael Kaicher, Joseph Vovrosh, Alexandre Dauphin +1 more·Jan 20, 2026
We introduce equations of motion for a parity-violating fermionic mean-field theory (PV-FMFT): a numerically efficient fermionic mean-field theory based on parity-violating fermionic Gaussian states (PV-FGS). This work provides explicit equations of ...
Composing $p$-adic qubits: from representations of SO(3)$_p$ to entanglement and universal quantum logic gates
Ilaria Svampa, Sonia L'Innocente, Stefano Mancini +1 more·Jan 20, 2026
In the context of $p$-adic quantum mechanics, we investigate composite systems of $p$-adic qubits and $p$-adically controlled quantum logic gates. We build on the notion of a single $p$-adic qubit as a two-dimensional irreducible representation of th...
Limits of multimode bunching for boson sampling validation: anomalous bunching induced by time delays
Léo Pioge, Leonardo Novo, Nicolas J. Cerf·Jan 20, 2026
The multimode bunching probability is expected to provide a useful criterion for validating boson sampling experiments. Its applicability, however, is challenged by the existence of anomalous bunching, namely paradoxical situations in which partially...
Advances in non-Hermitian dynamics of quadratic bosonic systems
Huawei Zhao, Xinlei Liu, Xinyao Huang +1 more·Jan 20, 2026
Non-Hermitian physics has emerged as a rapidly advancing field of research, revealing a range of novel phenomena and potential applications. Traditional non-Hermitian Hamiltonians are typically simulated by constructing asymmetric couplings or by int...
Evolution of Vortex Strings after a Thermal Quench in a Holographic Superfluid
Chuan-Yin Xia, András Grabarits, Hua-Bi Zeng +1 more·Jan 20, 2026
The formation of topological defects during continuous phase transitions exhibits nonequilibrium universality. While the Kibble-Zurek mechanism (KZM) predicts universal scaling of point-like defect numbers under slow driving, the statistical properti...
Quantum Entanglement Geometry on Severi-Brauer Schemes: Subsystem Reductions of Azumaya Algebras
Kazuki Ikeda·Jan 20, 2026
Quantum entanglement is a defining signature and resource of quantum theory, but its standard definition presupposes a globally fixed decomposition into subsystems. We develop a geometric framework that detects when such a decomposition cannot be glo...
Topological Anderson insulator and reentrant topological transitions in a mosaic trimer lattice
Xiatao Wang, Li Wang, Shu Chen·Jan 20, 2026
We study the topological properties of a one-dimensional quasiperiodic-potential-modulated mosaic trimer lattice. To begin with, we first investigate the topological properties of the model in the clean limit free of quasiperiodic disorder based on a...
On-Chip Generation of Co-Polarized and Spectrally Separable Photon Pairs
Xiaojie Wang, Lin Zhou, Yue Li +10 more·Jan 20, 2026
On-chip generation of high-purity single photons is essential for scalable photonic quantum technologies. Spontaneous parametric down-conversion (SPDC) is widely used to generate photon pairs for heralded single-photon sources, but intrinsic spectral...
Quantum Box-Muller Transform
Dinh-Long Vu, Hitomi Mori, Patrick Rebentrost·Jan 20, 2026
The Box-Muller transform is a widely used method to generate Gaussian samples from uniform samples. Quantum amplitude encoding methods encode the multi-variate normal distribution in the amplitudes of a quantum state. This work presents the Quantum B...
Generative Adversarial Networks for Resource State Generation
Shahbaz Shaik, Sourav Chatterjee, Sayantan Pramanik +1 more·Jan 20, 2026
We introduce a physics-informed Generative Adversarial Network framework that recasts quantum resource-state generation as an inverse-design task. By embedding task-specific utility functions into training, the model learns to generate valid two-qubi...
Spectral stability of cavity-enhanced single-photon emitters in silicon
Johannes Früh, Fabian Salamon, Andreas Gritsch +2 more·Jan 20, 2026
The unrivaled maturity of its nanofabrication makes silicon a promising hardware platform for quantum information processing. To this end, efficient single-photon sources and spin-photon interfaces have been implemented by integrating color centers o...
3D Stacked Surface-Code Architecture for Measurement-Free Fault-Tolerant Quantum Error Correction
GunSik Min, IlKwon Sohn, Jun Heo·Jan 20, 2026
Mid-circuit measurements are a major bottleneck for superconducting quantum processors because they are slower and noisier than gates. Measurement-free quantum error correction (mfec) replaces repeated measurements and classical feed-forward by coher...
Theory for Entangled-Photons Stimulated Raman Scattering versus Nonlinear Absorption for Polyatomic Molecules
Mingran Zhang, Jiahao Joel Fan, Frank Schlawin +1 more·Jan 20, 2026
Quantum entanglement offers an incredible resource for enhancing the sensing and spectroscopic probes. Here we develop a microscopic theory for the stimulated Raman scattering (SRS) using entangled photons. We demonstrate that the time-energy correla...
Recent progress on disorder-induced topological phases
Dan-Wei Zhang, Ling-Zhi Tang·Jan 20, 2026
Topological states of matter in disordered systems without translation symmetry have attracted great interest in recent years. These states with topological characters are not only robust against certain disorders, but also can be counterintuitively ...
A scalable near-visible integrated photon-pair source for satellite quantum science
Yi-Han Luo, Yuan Chen, Ruiyang Chen +8 more·Jan 20, 2026
Quantum state distribution over vast distances is essential for global-scale quantum networks and fundamental test of quantum physics at space scale. While satellite platforms have demonstrated thousand-kilometer entanglement distribution, quantum ke...
Kaleidoscope Yang-Baxter Equation for Gaudin's Kaleidoscope models
Wen-Jie Qiu, Xi-Wen Guan, Yi-Cong Yu·Jan 20, 2026
Recently, researchers have proposed the Asymmetric Bethe ansatz method - a theoretical tool that extends the scope of Bethe ansatz-solvable models by "breaking" partial mirror symmetry via the introduction of a fully reflecting boundary. Within this ...
Fundamental Limits of Continuous Gaussian Quantum Metrology
Kazuki Yokomizo, Aashish A. Clerk, Yuto Ashida·Jan 20, 2026
Continuous quantum metrology holds promise for realizing high-precision sensing by harnessing information progressively carried away by the radiation quanta emitted into the environment. Despite recent progress, a comprehensive understanding of the f...
Confined non-Hermitian skin effect in a semi-infinite Fock-state lattice
Zhi Jiao Deng, Xing Yao Mi, Ruo Kun Cai +2 more·Jan 20, 2026
In this paper, we investigate the non-Hermitian skin effect in a semi-infinite Fock-state lattice, where the inherent coupling scales as \sqrt{n}. By analytically solving a non-uniform, non-reciprocal SSH model, we demonstrate that the intrinsic inho...
Onset of thermalization of q-deformed SU(2) Yang-Mills theory on a trapped-ion quantum computer
Tomoya Hayata, Yoshimasa Hidaka, Yuta Kikuchi·Jan 20, 2026
Nonequilibrium dynamics of quantum many-body systems is one of the main targets of quantum simulations. This focus - together with rapid advances in quantum-computing hardware - has driven increasing applications in high-energy physics, particularly ...