⚛️ Category

quant-ph

8945 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.

⚛️ general relativity

The small effect of graviton-induced decoherence

This paper derives Lindblad master equations for nonrelativistic matter interacting with quantized gravitational waves, revealing that the intrinsic quadratic coupling decomposes the system into parity sectors and leads to distinct decoherence behaviors—ranging from coherence protection in vacuum to novel dressed dark states in squeezed baths—while demonstrating that realistic graviton-induced decoherence remains negligibly small.

Guri K. Buza, Marko Toroš2026-08-10
🔬 optics

Demonstration of an LLO CV-QKD system over 12 km of optical fiber

This paper demonstrates a secure Gaussian continuous-variable quantum key distribution (CV-QKD) system over 12 km of optical fiber using fully independent local oscillator lasers, achieving secret key rates of 5.11 Mbit/s in the asymptotic regime and 4.67 Mbit/s in the finite-size regime to establish a foundation for metropolitan deployment under strict security constraints.

Christiano M. S. Nascimento, Artur A. Matoso, Gustavo C. Amaral, Guilherme P. Temporão2026-08-10
⚛️ quantum physics

Quantum multiparameter estimation with multi-mode photon catalysis entangled squeezed state

This paper proposes a method to generate multi-mode entangled catalysis squeezed vacuum states via a Fredkin gate-based Mach-Zehnder interferometer, demonstrating that this scheme significantly enhances multi-phase estimation precision and exhibits superior robustness against photon loss compared to ideal entangled squeezed vacuum states.

Huan Zhang, Wei Ye, Shoukang Chang, Ying Xia, Liyun Hu, Zeyang Liao2026-08-07
🔬 optics

Optical scattering imaging with sub-nanometer precision based on position-ultra-sensitive giant Lamb shift

This paper proposes a fluorescence-free optical microscopy technique that achieves sub-nanometer localization and polarization precision for quantum emitters by detecting scattering spectrum shifts induced by giant Lamb shifts in plasmonic coupling systems, thereby overcoming fluorescence quenching and enabling broader applications across various scientific fields.

Zeyang Liao, Yuwei Lu, Xue-Hua Wang2026-08-07
⚛️ quantum physics

Quantum super-resolution for imaging two pointlike entangled photon sources

This paper demonstrates that quantum super-resolution imaging of two pointlike entangled photon sources, achieved through spatial-mode demultiplexing and the method of moments, offers superior separation estimation sensitivity compared to incoherent and coherent sources, particularly when the squeezed parameter is increased or relative phase differences are eliminated.

Huan Zhang, Wei Ye, Ying Xia, Zeyang Liao, Xue-hua Wang2026-08-07
⚛️ quantum physics

Quantum search in many-body interacting system with long-range interaction

This paper demonstrates that while one-dimensional atom arrays, waveguide-QED, and cavity-QED systems can all achieve near-optimal quantum search without dissipation, only the waveguide and cavity systems maintain high success probabilities in noisy environments due to their ability to enhance long-range interactions and spectral gaps, thereby mitigating dissipation effects.

Fan Xing, Yan Wei, Zeyang Liao2026-08-07
🔬 condensed matter

Andreev qubit readout from dynamic interference supercurrent

This paper proposes a novel, nondestructive readout method for Andreev qubits in quantum-dot Josephson junctions that utilizes macroscopic time-dependent oscillatory supercurrents to probe quantum states without ancilla qubits, thereby significantly reducing experimental overhead and eliminating the need for repetitive reinitialization.

Xian-Peng Zhang, Chuanchang Zeng, Zhen-Biao Yang, Jose Carlos Egues, Yugui Yao2026-08-07
⚛️ quantum physics

Tunable ultrahigh reflection with broadband via collective atom-atom interaction in waveguide-QED system

This paper proposes a tunable scheme for achieving broadband complete reflection in a waveguide-QED system by constructing photonic bandgaps through collective atom-atom interactions, with adjustable bandwidth and center frequency enabled by external fields and gradient modulation for applications in quantum devices.

Xin Wang, Junjun He, Zeyang Liao, M. Suhail Zubairy2026-08-07