⚛️ Category

quant-ph

9165 papers

Quantum physics explores the strange and often counterintuitive rules that govern the universe at its smallest scales. This field investigates how particles like electrons and photons behave in ways that defy our everyday intuition, forming the backbone of modern technologies from lasers to future quantum computers. While the mathematics can be daunting, the core ideas promise to revolutionize how we understand reality and process information.

At Gist.Science, we make these complex discoveries accessible to everyone. We systematically process every new preprint published in the Quant-Ph category on arXiv, transforming dense academic papers into clear, plain-language explanations alongside detailed technical summaries. Whether you are a seasoned researcher or a curious reader, our goal is to bridge the gap between cutting-edge theory and human understanding.

Below are the latest papers in quantum physics, distilled to help you grasp the newest breakthroughs without getting lost in the jargon.

⚛️ quantum physics

Full-Period Optical Phase Estimation with Heisenberg Scaling Using Displaced Squeezed States and Gaussian Measurements

This paper proposes a two-stage Gaussian strategy for full-period optical phase estimation that utilizes displaced squeezed states and heterodyne measurements for coarse localization followed by adaptive homodyne measurements on squeezed-vacuum probes, achieving Heisenberg scaling within a fixed energy constraint while significantly outperforming coherent-state-based approaches.

Marco A. Rodríguez-García, Luis Medina-Dozal, Francisco E. Becerra2026-07-07
⚛️ quantum physics

Robust phase sensitivity in Mach-Zehnder interferometer using photon added and subtracted squeezed coherent state

This paper demonstrates that using photon-added squeezed coherent states as inputs in a Mach-Zehnder interferometer significantly enhances phase estimation precision and offers robustness against low photon loss, particularly when analyzed via quantum Fisher information and compared against intensity-based detection schemes.

Shivani Singh, Priya Malpani, Anirban Pathak2026-07-07
⚛️ quantum physics

Time-dependent multiparameter estimation for quantum experiments via online-offline sequential Monte-Carlo method

This paper introduces a hybrid online-offline sequential Monte Carlo method that combines time-batch estimation with Kraus map approximations to accurately track time-dependent multiparameter dynamics in noisy quantum systems, demonstrating superior performance over standard calibration methods in superconducting-qubit experiments by successfully reconstructing signals and detecting unexpected parameter jumps.

Chattamas Manoworakul, Jason F. Ralph, Nattaphong Wonglakhon, Areeya Chantasri2026-07-07
⚛️ quantum physics

Self-Specializing Vision-Language Transmon Chip Calibration in a Physics-Grounded Environment

This paper presents a self-specializing vision-language agent that calibrates superconducting transmon chips in a physics-grounded simulation by iteratively adapting its strategy through gradient-free, human-readable notes, achieving significant fidelity improvements and variance reduction without weight updates, with a framework designed to transfer directly to real hardware.

Animesh Tripathy, Aswanth Krishnan2026-07-07
⚛️ quantum physics

An End-to-End Multi-Stage Kill-Chain Attack on Quantum Neural Networks: Demonstration on Trapped-Ion Hardware

This paper demonstrates a comprehensive, multi-stage attack on a quantum neural network running on trapped-ion hardware, which integrates side-channel reconnaissance, crosstalk characterization, and adversarial example generation to physically manipulate the device, while also addressing implications for quantum-as-a-service providers and potential hardware mitigations.

Cedric Brügmann, Daniel Herr, Daniel Ohl de Mello, Pascal Debus, Maximilian Wendlinger, Kilian Tscharke, Juris Ulmanis (…)2026-07-07
⚛️ quantum physics

Symmetry-Protected Quantum Synchronization in Squeezed-Bath-Engineered Superradiance

This paper demonstrates that a squeezed dissipative bath can suppress static superradiant thresholds in a bipartite Dicke model to induce complete quantum synchronization via a Hopf instability, which is certified by parity-even, information-theoretic witnesses despite the preservation of Z2\mathbb{Z}_2 symmetry that renders conventional broken-symmetry diagnostics ineffective.

Juan David Álvarez-Cuartas, Joakim Bergli, John H. Reina2026-07-07
🔢 mathematics

Superposed circular motion Unruh effect in (3+1) dimensions

This paper investigates the Unruh effect for a quantum detector in a superposition of circular trajectories in (3+1) dimensions, revealing that while vertically stacked paths yield minor deviations from the standard thermal response, a superposition involving a static central point significantly reduces the effective temperature and increases energy gap dependence, with potential applications in ultracold atom systems.

Taylor Cey, Cisco Gooding, Robert Mann2026-07-07
⚛️ quantum physics

Semiclassical Langevin dynamics of long-range dissipative time crystals

This paper develops a semiclassical Langevin approach to analyze finite-size effects in dissipative time-crystalline spin systems, demonstrating that the algebraic scaling of oscillation decay rates and deviation times with system size serves as a robust diagnostic for time-crystal behavior in both spin-1/2 and spin-1 models with long-range interactions.

Reyhaneh Khasseh, Rosario Fazio, Angelo Russomanno2026-07-07