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arXiv · 2607.04991

Quantum Hashing via Constrained Rydberg Many-Body Dynamics

Han-Chao Chen·Xin Liu·Zheng-Yuan Zhang·Dong-Sheng Ding·Bao-Sen Shi
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Abstract

In this Letter, we show that constrained many-body dynamics in Rydberg atom arrays naturally gives rise to a quantum hashing mechanism. By encoding ternary strings into deterministic trajectories in the state space, the classical information space is mapped onto a quantum state ensemble in the Hilbert space with an induced geometric structure. Statistical analysis reveals that this ensemble exhibits high probability near-orthogonality, random-like distribution, and broad geometric coverage. These geometric features naturally give rise to the essential cryptographic properties of quantum hashing, including low collision probability, one-wayness, tamper sensitivity, and privacy preservation. Our results demonstrate that the cryptographic functionality of quantum hashing need not rely on deliberately engineered algorithms, but can instead emerge naturally from constrained many-body dynamics, identifying quantum dynamics itself as a physical resource for cryptographic information processing.

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Han-Chao Chen, Xin Liu, Zheng-Yuan Zhang, Dong-Sheng Ding, Bao-Sen Shi. 2026-07-06. Quantum Hashing via Constrained Rydberg Many-Body Dynamics. https://arxiv.org/abs/2607.04991

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