Papers
Theory of anomalous Landau-Zener tunneling induced by nonlinear coupling
Wen-Yuan Wang, Hong-Juan Meng·Mar 2, 2026
We develop a general theory of Landau-Zener (LZ) tunneling in a two-level system with amplitude-dependent, sign-reversible nonlinear coupling, distinguishing it fundamentally from conventional on-site nonlinearity. Through a combination of analytical...
Single impurity-induced localization transitions in electronic systems
Niaz Ali Khan, Munsif Jan, Muzamil Shah +3 more·Mar 2, 2026
Anderson localization is a fundamental phenomenon in disordered quantum systems, where transport is suppressed by wave interference from extensive randomness. Moving beyond traditional multi-impurity scenarios, we investigate impurity-induced localiz...
Nonreciprocal entanglement in exciton optomechanics with an optical parametric amplifier
Zhen-Sen Lin, Rui Zhang, Zi-Wei Jiang +4 more·Mar 2, 2026
We study nonreciprocal bipartite and tripartite entanglement in a spinning exciton-optomechanical system (EOMS) with an optical parametric amplifier (OPA). We demonstrate that nonreciprocal entanglement among photons, excitons, and phonons can be ach...
Dicke superradiance in degenerate quantum matter: interplay of exchange statistics and spatial confinement
Julian Lyne, Kai Phillip Schmidt, Claudiu Genes +1 more·Feb 28, 2026
Collective radiance effects in quantum degenerate systems, such as superradiance and subradiance of a partially inverted ensemble, are shaped by the interplay of spatial confinement and exchange statistics. We investigate this interplay using a purel...
Closing the Loop: Resource-aware Hybrid NAS Guided by Analytical and Hardware-Calibrated Quantum Cost Modeling
Muhammad Kashif, Alberto Marchisio, Muhammad Shafique·Feb 28, 2026
Hybrid quantum-classical neural networks (HQNNs) integrate quantum circuits with classical layers, each operating under fundamentally different computational paradigms, which makes hardware resource estimation challenging. The training of quantum cir...
Optimizing CMOS-compatible, superconducting Titanium Nitride Resonators: Deposition Conditions and Structuring Processes
Simon J. K. Lang, Alexandra Schewski, Ignaz Eisele +10 more·Feb 28, 2026
We report on the fabrication and characterization of superconducting coplanar waveguide (CPW) resonators based on titanium nitride (TiN) thin films deposited on 200\,mm diameter high-resistivity Si(100) substrates. We systematically investigate how d...
Pretty Good Measurement for Radiomics: A Quantum-Inspired Multi-Class Classifier for Lung Cancer Subtyping and Prostate Cancer Risk Stratification
Giuseppe Sergioli, Carlo Cuccu, Giovanni Pasini +4 more·Feb 27, 2026
We investigate a quantum-inspired approach to supervised multi-class classification based on the \emph{Pretty Good Measurement} (PGM), viewed as an operator-valued decision rule derived from quantum state discrimination. The method associates each cl...
Fulde-Ferrell superfluids in an asymmetric three-component Fermi Gas
Yuhan Lu, Lihong Zhou, Yongping Zhang·Feb 27, 2026
An asymmetric three-component Fermi gas, featuring Raman-induced spin-orbit coupling between the first and second components and contact interaction only between the first and third components, introduces both spin-orbit coupling and population imbal...
Entanglement dynamics for atoms near a reflecting boundary: enhancement and suppression by environment-induced interactions
Ying Chen, Hongwei Yu, Jiawei Hu·Feb 27, 2026
We investigate how environment-induced interactions influence the entanglement dynamics of two static atoms placed near a perfectly reflecting boundary. In this setting, the environment-induced interactions include both atom-boundary contributions (p...
Analogue many-body gravitating quantum systems with a network of dipolar Bose-Einstein condensates
Youssef Trifa, Dario Cafasso, Marco Fattori +1 more·Feb 26, 2026
Operational probes of the interface between quantum mechanics and general relativity in the Newtonian regime -- via mass-energy equivalence in clocks or spatial superpositions in interferometers -- share a common description in terms of an effective ...
Dequantization Barriers for Guided Stoquastic Hamiltonians
Yassine Hamoudi, Yvan Le Borgne, Shrinidhi Teganahally Sridhara·Feb 26, 2026
We construct a probability distribution, induced by the Perron--Frobenius eigenvector of an exponentially large graph, which cannot be efficiently sampled by any classical algorithm, even when provided with the best-possible warm-start distribution. ...
Experimental demonstration of the absence of noise-induced barren plateaus using information content landscape analysis
Sebastian Schmitt, Linus Ekstrøm, Alberto Bottarelli +1 more·Feb 26, 2026
Variational quantum algorithms are promising candidates for near-term quantum computing but can be hindered by barren plateaus, where gradients vanish exponentially and optimization becomes intractable. Noise-Induced Barren Plateaus (NIBP) are partic...
Control of Multipartite Entanglement through Anisotropy against Thermal Noise
Samudra Sur, Saikat Sur·Feb 26, 2026
Preserving multipartite entanglement in open many-body quantum systems is fundamentally limited by unavoidable environmental noise. We study the open-system dynamics of multipartite entanglement in an anisotropic XXZ spin chain interacting with a the...
Thermodynamic Uncertainty Relation with Quantum Feedback
Ryotaro Honma, Tan Van Vu·Feb 26, 2026
Fluctuations are intrinsic to microscopic systems and impose fundamental limits on nonequilibrium precision, as captured by the thermodynamic uncertainty relation (TUR), which links current fluctuations to entropy production. While feedback control i...
Vibration induced transparency and absorption with two ion ensembles in a linear trap
Wenjun Shao, Jian Li·Feb 26, 2026
We study the spectra of collective low excitations of two atomic ion ensembles which are confined in a liner trap by addressing lases. When the left ensemble is driven by an external optical field, its corresponding response spectrum to the incident ...
Gravitational decoherence and recoherence of a composite particle: the interplay between gravitons and a classical Newtonian potential
Thiago H. Moreira, Lucas Chibebe Céleri·Feb 26, 2026
The fact that gravitational environments cannot be shielded (since gravity is universal) makes them of great theoretical interest to decoherence mechanisms and to the quantum-to-classical transition. While past results seemed to indicate that gravito...
Controlled symmetry breaking of the Fermi surface in ultracold polar molecules
Shrestha Biswas, Sebastian Eppelt, Weikun Tian +6 more·Feb 25, 2026
Long-range anisotropic dipole-dipole interactions between ultracold polar molecules are predicted to drive exotic quantum phases, yet direct many-body signatures of these interactions in degenerate Fermi gases have remained elusive. Here, we report t...
Macroscopic Quantum Electrodynamics with Gain: Modified Fluctuations and Their Consequences
Daigo Oue·Feb 25, 2026
Macroscopic quantum electrodynamics (MQED) provides a unified framework to describe quantum electromagnetic fields in the presence of arbitrary macroscopic environments. Central to this theory is the field correlation, which governs both radiative (e...
A field-biased HPZ master equation and its Markovian limit
M. Gabriela Boada G., Andrea Delgado, Jose Morales E·Feb 25, 2026
We present a first-principles derivation of a non-equilibrium quantum master equation for a continuously driven open quantum system interacting with a structured electromagnetic environment. Starting from a driven Caldeira-Leggett model in which an e...
Beyond Single-Shot Fidelity: Chernoff-Based Throughput Optimization in Superconducting Qubit Readout
Sinan Bugu·Feb 25, 2026
Single-shot fidelity is the standard benchmark for superconducting qubit readout, yet it does not directly minimize the wall-clock time needed to certify a quantum state. We treat the dispersive measurement record as a stochastic communication channe...