Color Centers and Hyperbolic Phonon Polaritons in Hexagonal Boron Nitride: A New Platform for Quantum Optics

This paper establishes a cavity-QED framework connecting hexagonal boron nitride color centers with hyperbolic phonon polaritons, demonstrating how single quantum emitters can serve as on-chip sources to generate, control, and mediate long-range interactions of confined mid-infrared polaritons for advanced quantum optics applications.

Jie-Cheng Feng, Johannes Eberle, Sambuddha Chattopadhyay, Johannes Knörzer, Eugene Demler, Ataç \.Imamo\u{g}luTue, 10 Ma⚛️ quant-ph

A Concept of Two-Point Propagation Field of a Single Photon: A Way to Picometer X-ray Displacement Sensing and Nanometer Resolution 3D X-ray Micro-Tomography

This paper introduces the two-point propagation field (TPPF), a phase-sensitive quantity derived from single-photon detection probabilities that enables picometer-scale X-ray displacement sensing and deterministic, non-iterative 3D nanometer-resolution tomography by leveraging stable high-frequency sinusoidal structures and Fourier-Radon transformations.

Li Hua YuTue, 10 Ma⚛️ quant-ph

Hybrid quantum-classical matrix-product state and Lanczos methods for electron-phonon systems with strong electronic correlations: Application to disordered systems coupled to Einstein phonons

This paper introduces and benchmarks two hybrid quantum-classical methods combining time-dependent Lanczos and matrix-product state approaches with the multi-trajectory Ehrenfest approximation to simulate electron-phonon systems, demonstrating that coupling strongly disordered interacting fermions to classical Einstein phonons induces delocalization and destabilizes many-body localization.

Heiko Georg Menzler, Suman Mondal, Fabian Heidrich-MeisnerTue, 10 Ma⚛️ quant-ph

Enhanced Rényi Entropy-Based Post-Quantum Key Agreement with Provable Security and Information-Theoretic Guarantees

This paper introduces an enhanced post-quantum key agreement protocol that achieves provable, information-theoretic security against quantum adversaries through Rényi entropy-based techniques, distributed polynomial commitments, and quantum-resistant commitments, offering $2^{128}$ security guarantees without relying on computational hardness assumptions.

Ruopengyu Xu, Chenglian LiuTue, 10 Ma⚛️ quant-ph

Flux Trapping Characterization for Superconducting Electronics Using a Cryogenic Widefield NV-Diamond Microscope

This paper introduces a cryogenic widefield NV-diamond microscope that enables rapid, micrometer-scale imaging of magnetic flux trapping in superconducting devices, revealing critical vortex expulsion behaviors in Nb thin films and offering a high-throughput tool for improving the reliability of scalable superconducting electronics.

Rohan T. Kapur, Pauli Kehayias, Sergey K. Tolpygo, Adam A. Libson, George Haldeman, Collin N. Muniz, Alex Wynn, Nathaniel J. O'Connor, Neel A. Parmar, Ryan Johnson, Andrew C. Maccabe, John Cummings, Justin L. Mallek, Danielle A. Braje, Jennifer M. SchlossTue, 10 Ma⚛️ quant-ph

Experimental demonstration of the absence of noise-induced barren plateaus using information content landscape analysis

This paper experimentally demonstrates on IBM quantum hardware that noise-induced barren plateaus do not necessarily occur, as gradient magnitudes saturate rather than decay exponentially due to T1T_1-dominated non-unital noise, challenging the assumption that noise universally hinders variational quantum algorithms.

Sebastian Schmitt, Linus Ekstrøm, Alberto Bottarelli, Xavier Bonet-MonroigTue, 10 Ma⚛️ quant-ph