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

Solving the Mysteries of Quantum Mechanics: Why Nature Abhors a Continuum

The paper proposes "Rational Quantum Mechanics" (RaQM), a theory that resolves the fundamental mysteries of quantum mechanics by replacing the unphysical continuum of Hilbert Space with a gravitationally discretized framework, thereby explaining phenomena like Bell inequality violations and the use of complex numbers through a number-theoretic property of the cosine function that establishes a holistic rather than nonlocal nature of reality.

Tim Palmer2026-02-19

⚛️ quantum physics

Measurement Induced Subradiance

This paper proposes a platform-independent protocol that utilizes projective measurements on a single quantum emitter to efficiently prepare subradiant steady states in both permutation-symmetric ensembles and generic arrays of collectively emitting two-level systems.

Ipsita Bar, Aditi Thakar, B. Prasanna Venkatesh2026-02-19

⚛️ quantum physics

On the Coupled Cluster Doubles Truncation Variety of Four Electrons

This paper investigates the algebro-geometric properties of the Coupled Cluster Doubles (CCD) truncation variety for four electrons, establishing that it is a complete intersection of a specific degree defined by Pfaffian quadratic relations, and connects these structural findings to the challenging bond formation process of beryllium insertion into molecular hydrogen.

Fabian M. Faulstich, Vincenzo Galgano, Elke Neuhaus, Irem Portakal2026-02-19

⚛️ quantum physics

Lower bounds to variational problems with guarantees

This paper demonstrates that for translationally invariant lattice Hamiltonians with periodic boundary conditions, efficiently computable lower bounds to ground state energies—derived from the Anderson bound and semi-definite relaxations—can be systematically improved and provide performance guarantees that scale favorably with system size, complementing existing variational upper bounds.

J. Eisert2026-02-18

⚛️ high-energy theory

Oscillation probabilities for a PT-symmetric non-Hermitian two-state system

This Letter presents a formulation of transition matrix elements for PT-symmetric non-Hermitian Hamiltonians that ensures positivity and perturbative unitarity by utilizing a positive-definite inner product, and demonstrates its application to two-neutrino flavor oscillations and the seesaw mechanism.

Jean Alexandre, Madeleine Dale, John Ellis, Robert Mason, Peter Millington2026-02-18

⚛️ quantum physics

Against the "nightmare of a mechanically determined universe": Why Bohm was never a Bohmian

This paper challenges the standard narrative of David Bohm as a deterministic convert by arguing that he consistently rejected mechanistic determinism throughout his career, thereby concluding that he was never truly a "Bohmian" and that his philosophical views have been largely misinterpreted.

Flavio Del Santo, Gerd Christian Krizek2026-02-18

⚛️ quantum physics

Predominant Aspects on Security for Quantum Machine Learning: Literature Review

This paper presents a systematic literature review that categorizes the unique security vulnerabilities and strengths of Quantum Machine Learning, highlighting novel attack vectors and proposed mitigation strategies to guide the secure deployment of QML in real-world applications.

Nicola Franco, Alona Sakhnenko, Leon Stolpmann, Daniel Thuerck, Fabian Petsch, Annika Rüll, Jeanette Miriam Lorenz2026-02-18

⚛️ quantum physics

Mitigating imperfections in Differential Phase Shift Measurement-Device-Independent Quantum Key Distribution via Plug-and-Play architecture

This paper proposes a plug-and-play architecture for Differential Phase Shift Measurement-Device-Independent Quantum Key Distribution (DPS-MDI-QKD) to mitigate performance-degrading imperfections such as pulse-width and polarization mismatches, thereby addressing channel asymmetry constraints and enabling more practical implementations.

Nilesh Sharma, Shashank Kumar Ranu, Prabha Mandayam, Anil Prabhakar2026-02-18

⚛️ quantum physics

Quantum Metrology of Newton's Constant with Levitated Mechanical Systems

The paper proposes a mechanical interferometric scheme using interacting levitated oscillators to measure Newton's constant with unprecedented accuracy, potentially surpassing current standards by several orders of magnitude.

Francis J. Headley, Alessio Belenchia, Mauro Paternostro, Daniel Braun2026-02-18

⚛️ quantum physics

Ultimate quantum sensitivity in the 3D relative localisation of two single-photon emitters via two-photon interference

This paper presents a quantum sensing protocol that utilizes two-photon interference and sampling measurements to achieve ultimate sensitivity in the simultaneous 3D relative localization of two single-photon emitters, enabling diffraction-limit-free nanoscopy with high precision and low bias.

Luca Maggio, Vincenzo Tamma2026-02-18

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