⚛️ Category

quant-ph

10579 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.

⚛️ quantum physics

Characterizing the Burst Error Correction Ability of Quantum Cyclic Codes

This paper characterizes the burst error correction capabilities of quantum cyclic codes constructed via CSS and Hermitian methods, establishes polynomial-time algorithms to determine their limits, demonstrates that quantum Reed-Solomon codes outperform previous results in saturating the quantum Reiger bound, and proposes a linear-time quantum error-trapping decoder capable of handling both degenerate and nondegenerate burst errors.

Jihao Fan, Min-Hsiu Hsieh2026-02-03
⚛️ quantum physics

Scalable quantum simulator with an extended gate set in giant atoms

This paper proposes a scalable quantum simulator based on superconducting giant-atom three-level systems that utilizes multi-point coupling interference to natively implement both CZ and iSWAP gates without parametric couplers, thereby enabling efficient simulation of complex open quantum many-body dynamics and paving the way for fault-tolerant universal quantum computation.

Guangze Chen, Anton Frisk Kockum2026-02-03
⚛️ quantum physics

Enhanced Simultaneous Quantum-Classical Communications Under Composable Security

This paper presents a revised, composable security analysis of simultaneous quantum-classical communications in Gaussian-modulated coherent-state CV-QKD, demonstrating improved secret-key generation rates and quantum efficiency through a new coupling model validated by Monte Carlo simulations and finite-key regime analysis.

Nicholas Zaunders, Ziqing Wang, Robert Malaney, Ryan Aguinaldo, Timothy C. Ralph2026-02-03
⚛️ quantum physics

Quantum Routing and Entanglement Dynamics Through Bottlenecks

This paper establishes significantly improved lower and upper bounds on the time required for quantum routing and entanglement generation in architectures constrained by vertex bottlenecks, demonstrating that Hamiltonian dynamics can achieve a Θ(N)\Theta(\sqrt{N}) routing speed-up over gate-based methods on star graphs.

Dhruv Devulapalli, Chao Yin, Andrew Y. Guo, Eddie Schoute, Andrew M. Childs, Alexey V. Gorshkov, Andrew Lucas2026-02-03
⚛️ quantum physics

Three-qubit W state tomography via full and marginal state reconstructions on ibm_osaka

This paper demonstrates a proof-of-principle experiment on IBM's ibm_osaka processor showing that a reduced measurement scheme reconstructing two-qubit marginals not only significantly lowers the overhead of three-qubit W state tomography but also yields higher fidelity than full state reconstruction, thereby validating the theoretical result that two-qubit subsystems can uniquely determine the global pure state.

H. Talath, B. P. Govindaraja, B. G. Divyamani, Akshata Shenoy H., A. R. Usha Devi, Sudha2026-02-03
⚛️ quantum physics

Secure One-Sided Device-Independent Quantum Key Distribution Under Collective Attacks with Enhanced Robustness

This paper establishes the security of a one-sided device-independent quantum key distribution protocol against collective attacks by deriving an analytical lower bound on the asymptotic key rate based on the three-setting CJWR steering inequality, demonstrating that the approach offers enhanced robustness to quantum bit error rates and detection inefficiencies compared to fully device-independent protocols.

Pritam Roy, Subhankar Bera, A. S. Majumdar2026-02-03