quant-ph papers | Gist.Science

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

Operational reconstruction of Feynman rules for quantum amplitudes via composition algebras

This paper presents an operational reconstruction of quantum amplitudes using composition algebras, demonstrating that a coordinate-independent framework based on specific model axioms and observer choices naturally yields the complex numbers and quaternions (along with their split forms) as the only allowable amplitude algebras, with observed probabilities emerging quadratically in accordance with the Born rule.

Jens Köplinger, Michael Habeck, Philip Goyal2026-04-07

⚛️ quantum physics

Observation of Shear Strain in Ion-Implanted Diamond Substrate and Diamond Nanophotonic Structures

This paper demonstrates that zero-field continuous-wave optically detected magnetic resonance (CW-ODMR) spectroscopy can detect shear strain induced by ion implantation and nanofabrication processes in diamond substrates and nanophotonic structures, evidenced by asymmetric splitting in the spectra of nitrogen-vacancy centers.

Ayan Majumder, Vivek K Shukla, Anuj Bathla, Brajesh S. Yadav, Nanhey Singh, Padmnabh Rai, Kasturi Saha2026-04-07

⚛️ quantum physics

A predictive solution of the EPR paradox

This paper resolves the EPR paradox by demonstrating through two equivalent methods—quantum conditional expectation and the von Neumann post-measurement state—that predicting a particle's properties after measurement does not violate the Heisenberg uncertainty principle.

Henryk Gzyl2026-04-07

⚛️ quantum physics

Block Encoding of Sparse Matrices via Coherent Permutation

This paper introduces a unified framework for efficient block encoding of sparse matrices that leverages combinatorial optimization and coherent permutation operators to overcome multi-controlled gate overhead and hardware connectivity constraints, thereby bridging the gap between theoretical formulations and hardware-efficient quantum circuit implementations.

Abhishek Setty2026-04-07

⚛️ quantum physics

The Universal Theory of Locally Universal Tracial von Neumann Algebras is not Computable

Building on Lin's breakthrough result that MIP $^{co}$ = coRE, this paper proves that the universal theories of locally universal tracial von Neumann algebras are undecidable, thereby establishing the existence of explicit separable II $_1$ factors without computable presentations and providing strong evidence for a negative solution to the Kirchberg Embedding Problem.

Jananan Arulseelan, Aareyan Manzoor2026-04-07

⚛️ quantum physics

Entanglement Structure Certification Based on Energy-Restricted State Discrimination

This paper introduces an energy-restricted state discrimination game that certifies multipartite entanglement structures through a strict hierarchy of success probabilities, offering a single fixed measurement setting that scales exponentially in performance and noise robustness with the number of parties.

Carles Roch I Carceller2026-04-07

⚛️ quantum physics

Partition function of the Kitaev quantum double model

This paper derives the exact finite-temperature partition function for the Kitaev quantum double model on any planar graph representing a closed orientable surface of arbitrary genus by computing energy level degeneracies through the fusion rules of anyonic excitations in the Drinfeld center $\mathcal{Z}(\mathrm{Vec}_G)$ .

Anna Ritz-Zwilling, Benoît Douçot, Steven H. Simon, Julien Vidal, Jean-Noël Fuchs2026-04-07

⚛️ quantum physics

An Improved Quantum Anonymous Notification Protocol for Quantum-Augmented Networks

This paper proposes an improved Quantum Anonymous Notification (QAN) protocol for Quantum-Augmented Networks that utilizes rotation operations on shared GHZ states to achieve stronger resilience against dephasing noise and integrates machine learning to enhance security by enabling switch-bypass handling of quantum payloads.

Nitin Jha, Abhishek Parakh, Mahadevan Subramaniam2026-04-07

🔬 mesoscale physics

Dissipative Yao-Lee Spin-Orbital Model: Exact Solvability and $\mathcal{PT}$ Symmetry Breaking

This paper introduces an exactly solvable dissipative Yao-Lee spin-orbital model that maps to a non-Hermitian fermionic system, revealing an exponentially large manifold of non-equilibrium steady states and a $\mathcal{PT}$ symmetry breaking transition characterized by an exceptional ring in the Liouvillian spectrum.

Zihao Qi, Yuan Xue2026-04-07

🔬 mesoscale physics

Device/circuit simulations of silicon spin qubits based on a gate-all-around transistor

This paper theoretically demonstrates the effective readout of a two-qubit silicon spin qubit system using gate-all-around transistor simulations and SPICE circuit analysis, confirming that a conventional CMOS sense amplifier can detect state-dependent current variations through dynamic voltage control.

Tetsufumi Tanamoto, Keiji Ono2026-04-07✓ Author reviewed ⓘ

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quant-ph

Operational reconstruction of Feynman rules for quantum amplitudes via composition algebras

Observation of Shear Strain in Ion-Implanted Diamond Substrate and Diamond Nanophotonic Structures

A predictive solution of the EPR paradox

Block Encoding of Sparse Matrices via Coherent Permutation

The Universal Theory of Locally Universal Tracial von Neumann Algebras is not Computable

Entanglement Structure Certification Based on Energy-Restricted State Discrimination

Partition function of the Kitaev quantum double model

An Improved Quantum Anonymous Notification Protocol for Quantum-Augmented Networks

Dissipative Yao-Lee Spin-Orbital Model: Exact Solvability and PT\mathcal{PT}PT Symmetry Breaking

Device/circuit simulations of silicon spin qubits based on a gate-all-around transistor

Dissipative Yao-Lee Spin-Orbital Model: Exact Solvability and $\mathcal{PT}$ Symmetry Breaking