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

Benchmarking Swarm Optimization Algorithms for Parameter Initialization in the Quantum Approximate Optimization Algorithm

This paper demonstrates that swarm optimization algorithms, including PSO, FIPSO, QPSO, and an Adam-assisted variant, outperform standard optimizers like Adam and SPSA in initializing parameters for the Quantum Approximate Optimization Algorithm (QAOA) by achieving lower approximation gaps and more stable convergence, particularly under noisy and shot-limited conditions.

Shashank Sanjay Bhat, Peiyong Wang, Udaya Parampalli2026-04-22

⚛️ quantum physics

Existence of a robust optimal control process for efficient measurements in a two-qubit system

This paper proposes and mathematically validates a robust optimal control protocol that enables the direct verification and exact quantification of two-qubit entanglement via a single expectation value measurement, offering a low-depth, noise-resilient alternative to quantum state tomography for industrial-scale quality control.

Ricardo Rodriguez, Nam Nguyen, Elizabeth Behrman, Andrew C. Y. Li, James Steck2026-04-22

🔬 condensed matter

Signatures of rigidity and second sound in dipolar supersolids

This paper proposes and simulates a dynamical protocol using quasi-one-dimensional double-well potentials to distinguish the rigidity and phase coherence of dipolar supersolids from other phases by observing damped crystal oscillations and second sound excitations triggered by merging fragments and phase-imprinted jumps.

G. A. Bougas, T. Bland, H. R. Sadeghpour, S. I. Mistakidis2026-04-22

🔬 condensed matter

A Unsupervised Framework for Identifying Diverse Quantum Phase Transitions Using Classical Shadow Tomography

This paper presents an unsupervised machine learning framework that combines classical shadow tomography with principal component analysis to detect and classify diverse quantum phase transitions, including both symmetry-breaking and topological types, without requiring prior knowledge of the Hamiltonian or explicit order parameters.

Chi-Ting Ho, Daw-Wei Wang2026-04-22

🧬 biology

Testing quantum-like markers in neural dynamics

This paper proposes two experiments to identify quantum markers in neural dynamics by comparing whether subthreshold oscillation power spectra and axonal propagation statistics align with classical equations (FitzHugh-Nagumo and diffusive cable) or their newly introduced quantum variants.

Partha Ghose, Dimitris Pinotsis2026-04-22

🔢 mathematics

Quantum spatial best-arm identification via quantum walks

This paper introduces Quantum Spatial Best-Arm Identification (QSBAI), a framework leveraging quantum walks to solve the best-arm identification problem in graph-constrained bandits by encoding spatial restrictions into superpositions and extending amplitude amplification techniques to general graph structures.

Tomoki Yamagami, Etsuo Segawa, Takatomo Mihana, André Röhm, Atsushi Uchida, Ryoichi Horisaki2026-04-22

⚛️ high-energy theory

Krylov Complexity for Open Quantum System: Dissipation and Decoherence

This paper investigates Krylov complexity in open quantum systems using the Caldeira-Leggett model, revealing that while the complexity captures dissipative features, it remains insensitive to the onset of decoherence due to the mismatch between the Krylov basis and the conventional basis used to study decoherence.

Arpan Bhattacharyya, Sayed Gool, S. Shajidul Haque2026-04-22

⚛️ quantum physics

Symmetric $C_Z$ gate for ultracold neutral atoms based on counterdiabatic driving at Rydberg excitation

This paper proposes a symmetric, counterdiabatic-driven $C_Z$ gate scheme for ultracold neutral atoms that significantly reduces operation time while maintaining robustness against laser intensity variations, effectively bridging the gap between fully adiabatic and time-optimal entangling protocols.

I. I. Beterov, K. V. Kozenko, P. Xu, I. I. Ryabtsev2026-04-22

⚛️ quantum physics

Engineered Robustness for Nonadiabatic Geometric Quantum Gates

This paper presents a streamlined framework for nonadiabatic geometric quantum gates that utilizes auxiliary constraints and noncyclic paths to achieve super-robust single-qubit gates with fourth-order error scaling on superconducting transmon qubits, while also highlighting specific calibration challenges for two-qubit implementations.

Xuan Zhang, XIao-le Li, Jingjing Niu, Tongxing Yan, Yuanzhen Chen2026-04-22

⚛️ general relativity

Fermionic Casimir densities for a uniformly accelerating mirror in the Fulling-Rindler vacuum

This paper investigates the local characteristics of the Fulling-Rindler vacuum for a massive Dirac field in $(D+1)$ -dimensional spacetime with a uniformly accelerating mirror, decomposing the fermion condensate and energy-momentum tensor into boundary-free and boundary-induced contributions to reveal their distinct behaviors near the Rindler horizon and the mirror, as well as their contrasting properties compared to the Minkowski vacuum.

A. A. Saharian, L. Sh. Grigoryan, V. Kh. Kotanjyan2026-04-22

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quant-ph

Benchmarking Swarm Optimization Algorithms for Parameter Initialization in the Quantum Approximate Optimization Algorithm

Existence of a robust optimal control process for efficient measurements in a two-qubit system

Signatures of rigidity and second sound in dipolar supersolids

A Unsupervised Framework for Identifying Diverse Quantum Phase Transitions Using Classical Shadow Tomography

Testing quantum-like markers in neural dynamics

Quantum spatial best-arm identification via quantum walks

Krylov Complexity for Open Quantum System: Dissipation and Decoherence

Symmetric CZC_ZCZ​ gate for ultracold neutral atoms based on counterdiabatic driving at Rydberg excitation

Engineered Robustness for Nonadiabatic Geometric Quantum Gates

Fermionic Casimir densities for a uniformly accelerating mirror in the Fulling-Rindler vacuum

Symmetric $C_Z$ gate for ultracold neutral atoms based on counterdiabatic driving at Rydberg excitation