⚛️ Category

quant-ph

11028 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.

⚛️ high-energy theory

Complexity study of the Hartle-Hawking state in JT gravity

This paper investigates the growth of quantum complexity for the Hartle-Hawking state in Jackiw-Teitelboim gravity using the Wigner function negativity in the length basis, revealing that the state remains a minimum-uncertainty Gaussian with positive Wigner function at early times before saturating at late times, thereby demonstrating that the length basis provides an ideal semi-classical framework for describing chaotic quantum dynamics without exhibiting the spectral ramp seen in other measures.

Ritam Basu2026-10-02
⚛️ quantum physics

Mixed-state phases induced by power-law quantum channels

This paper demonstrates that applying power-law long-range dephasing channels to matrix product states in one dimension induces a rich phase diagram featuring distinct mixed-state phases, including a novel mixed SPT phase with nonvanishing Rényi-2 string order and two logical qubits, as well as strong-to-weak spontaneous symmetry breaking, while remaining feasible for experimental realization on near-term quantum hardware due to high purity regimes.

Christopher Fechisin, Tsung-Cheng Lu, Zhi-Yuan Wei, Jeet Shah, Yu-Xin Wang, Alexey V. Gorshkov, Cheng-Ju Lin2026-10-02
⚛️ general relativity

Causal Trade-Offs in Superluminal Extensions of Relativity. A no-go theorem

This paper presents a no-go theorem demonstrating that superluminal extensions of relativity, such as the proposal by Dragan and Ekert, cannot avoid superluminal signalling without severely restricting operational accessibility, making reference frame choices observable, or abandoning the existence of free variables, thereby showing that introducing objective uncertainty alone is insufficient to resolve the conflict.

Amrapali Sen, Matthias Salzger, V. Vilasini2026-10-02
⚛️ quantum physics

Factor Code Networks

This paper investigates the conditions under which a hierarchical network of quantum codes can be promoted to a "factor code network" by defining compatible unital operator maps, establishing that while tree structures always admit such promotion under dimension divisibility, general networks (such as diamond shapes) require specific constraints on principal angles and algebraic commutation relations.

Abhisek Sahu, Jeremy van der Heijden, Mark Van Raamsdonk, Rana Zibakhsh2026-10-02
⚛️ quantum physics

Clifford-hierarchy stabilizer formalism with applications to twisted quantum doubles

This paper introduces the XCd(k)X\mathcal C^{(k)}_d stabilizer formalism, which generalizes Pauli stabilizers using Clifford-hierarchy operators to classify and realize twisted quantum double phases and logical magic states, thereby providing a concrete framework for topological codes that circumvent the Bravyi-Koenig bound.

Christopher Fechisin, Kieran Cooney, Mathi Raja, Victor V. Albert, Dominic J. Williamson, Kyle Kawagoe, Seth Musser2026-10-02
⚛️ nuclear theory

Late-Time Power Laws in Fluorescence Decays: Quantum Decay or Alternative Mechanisms?

This study analyzes time-resolved fluorescence data from erythrosine B and eosine Y to demonstrate that alternative statistical and energy-migration models fail to reproduce the sharp transition from exponential to power-law decay predicted by quantum mechanics, suggesting that observed late-time power laws may not solely originate from quantum decay.

Francesco Giacosa (Jan Kochanowski University in Kielce, Goethe University Frankfurt), Anna Kolbus (Jan Kochanowski Univ (…)2026-10-02
⚛️ quantum physics

Learning Local Fermionic Lindbladians under Parity Superselection

This paper presents a protocol for learning time-independent, parity-covariant, local fermionic Lindbladians using only even preparations and measurements by employing internal markers to convert odd probes into even observables, achieving efficient sample complexity for both known and unknown interaction graphs while respecting parity superselection rules.

Tim Möbus, Daniel Stilck França, Cambyse Rouzé2026-10-02