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

Quantum and Classical Memory for Storage and Retrieval of Quantum Measurements

This paper investigates the fundamental limits and optimal constructions for storing and retrieving quantum measurements via exact and approximate compression, establishing that while finite classical memory cannot eliminate the need for quantum memory, the total required memory scales logarithmically with the number of outcomes and inverse success probability, with specific protocols achieving these bounds through direct program compression and branch-decomposition access.

Filip Turoboś, Ludmiła Marcinkowska, Zbigniew Puchała2026-10-28

⚛️ quantum physics

Qubit-environment entanglement in pure dephasing dynamics for mixed initial states

This paper investigates qubit-environment entanglement in pure dephasing dynamics with mixed initial states, revealing that separability criteria degrade to witnesses which exhibit unique phenomena like sudden entanglement birth while offering significant computational advantages for large environments.

Małgorzata Strzałka, Nico Peters, Laura Ares, Jan Sperling, Katarzyna Roszak2026-10-28

⚛️ quantum physics

A Unified Protocol for Arbitrary Z Rotations of a Class of Bosonic cQED Qubits

This paper identifies a specific class of bosonic Fock-based cQED qubits and proposes a unified six-step protocol for implementing arbitrary Z rotations across them, governed by a defined encoding condition.

Vahid Shaghaghi2026-10-28

⚛️ quantum physics

Quantum State Preparation for Complex-Valued Amplitudes

This paper presents a quantum state preparation method that utilizes the CORDIC algorithm to convert binary representations of real and imaginary components into complex-valued amplitudes with $O(n^2)$ T-gate complexity and $O(n)$ ancilla qubits, offering improved normalization efficiency and retained polar data for subsequent arithmetic compared to Linear Combination of Unitaries (LCU) approaches.

Fred Sun2026-10-28

⚛️ quantum physics

Minimal Projective Measurement Settings for Estimating Multiple Observables

This paper establishes structural bounds and employs a classical variational algorithm to determine the minimum number of orthogonal projective measurement settings required for unbiased estimation of multiple observables, demonstrating that shared measurement bases can significantly improve precision, as certified by a four-setting design for two-qubit moments that nearly achieves the theoretical variance lower bound.

Yibin Huang, Muchun Yang, D. L. Zhou2026-10-28

⚛️ quantum physics

Coherent Optical Control of a Single Donor Electron Spin

This paper demonstrates the first coherent optical initialization, control, and readout of a single donor-bound electron spin in ZnSe, utilizing spin-selective exciton transitions to achieve Rabi oscillations, Ramsey interference, and coherent population trapping while revealing hyperfine interactions with the chlorine nucleus.

Yuxi Jiang, Amirehsan Alizadehherfati, Christine Falter, Jasvith R. Basani, Nils von den Driesch, Yurii Kutovyi, Jan See (…)2026-10-28

⚛️ quantum physics

Consensus And Information Redistribution In Quantum Networks

This paper investigates decentralized quantum consensus in qudit networks under discrete random unitary dynamics, establishing a unified framework to characterize asymptotic behavior, identify preserved global information, and demonstrate how local or joint measurements can recover encoded global properties such as excitation moments and entanglement features.

J. Novotný, D. Štěrba, I. Jex, H. -H. Kowalski, A. Abedi2026-10-28

⚛️ quantum physics

Finite-temperature Quantum Quasinormal Mode Theory for Spatiotemporally-resolved Dissipative Cavity Quantum Magnonics

This paper presents a rigorous finite-temperature quantum quasinormal mode theory for dissipative, non-reciprocal cavity magnonic systems, enabling the accurate quantization of lossy resonators and the quantitative design of hybrid quantum devices under realistic thermal and open-system conditions.

Lars Meschede, Daniel D. A. Clarke, Ortwin Hess2026-10-28

⚛️ quantum physics

Many-body entanglement quantification in arbitrary states through a few partial-transpose moments

This paper demonstrates that the logarithmic negativity of arbitrary many-body states can be efficiently quantified without full state reconstruction by solving a truncated Hausdorff moment problem using a finite number of even partial-transpose moments to generate a converging hierarchy of lower bounds.

Sudip Chakrabarty, A. S. Majumdar2026-10-28

⚛️ quantum physics

Equilibrium Learning of Quantum Circuits

This paper proposes a novel framework for quantum circuit learning by embedding parametrized circuits into Feynman-Kitaev Hamiltonians to define equilibrium-based cost functions that reshape the optimization landscape and enable more efficient compilation via quantum phase estimation compared to standard infidelity metrics.

Frank Barrows, Touheed Atif, Yiğit Subaşı, Tyler Volkoff2026-10-28

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