5884 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.
This paper introduces a quantum-information theoretic definition of many-body chirality as an obstruction to transforming a state into its complex conjugate via finite-depth local operations, demonstrating that stabilizer states of anyon theories exhibit this chirality and intrinsic imaginarity even when conventional diagnostics like modular commutators or chiral central charges vanish.
This paper resolves a key open question by demonstrating that while operationally detectable causal loops are theoretically possible in (1+1)-dimensional Minkowski spacetime without violating the no-superluminal-signalling principle, such loops are strictly ruled out in higher-dimensional conical spacetimes across classical, quantum, and post-quantum theories, thereby establishing that the relationship between no superluminal signalling and the absence of causal loops is inherently dependent on spacetime geometry.
This paper generalizes analytical fidelity-reduction formulae to account for time-dependent dissipation in quantum operations, revealing that flux-dependent noise and qubit-coupler hybridization significantly degrade the fidelity of adiabatic controlled-Z gates in superconducting quantum computers.
This paper proposes a graph-theoretic framework and genetic algorithm-based solver to optimize qubit mapping for neutral atom quantum computers, minimizing transfer counts and distances while respecting spatial constraints to improve execution efficiency.
This paper introduces the Frontier decoder, a pruned dynamic-programming algorithm that achieves state-of-the-art performance for quantum LDPC codes by approximating optimal decoding with linear complexity and a very small retained list size.
This paper presents a GPU-accelerated semidefinite programming solver that enables the exploration of higher local dimensions in causal games, revealing that increasing the dimension beyond does not significantly improve the winning probability, thereby suggesting that current strategies are insufficient to close the gap with known upper bounds.
This paper presents a near-optimal, non-adaptive algorithm for learning local Lindbladians from black-box access that achieves channel uses and total evolution time using only random product states and Pauli measurements, while proving that these scaling limits are information-theoretically fundamental and preclude Heisenberg-limited performance in the presence of dissipation.
This paper presents a one-sided device-independent QKD protocol that achieves security against coherent attacks with detection efficiencies above 50.1% on the untrusted side, enabling long-distance implementation comparable to standard QKD by placing the state source near the untrusted device.
This paper provides a complete characterization of the constraints on real and imaginary Bloch-type coordinates for finite-dimensional quantum states, revealing a surprising qualitative difference in the shape of state-space boundaries between even and odd dimensions.
This paper presents a composable, finite-size secure continuous-variable quantum key distribution system using discrete modulation and polarization encoding over urban atmospheric channels, validated by a laboratory demonstration that calculates key rates against collective attacks without Gaussian assumptions.