QPerfect and BTQ Technologies Engineer First Circuit-Level Quantum One-Shot Signature Scheme - Quantum Computing Report

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QPerfect and BTQ Technologies Engineer First Circuit-Level Quantum One-Shot Signature Scheme

Researchers from quantum software startup QPerfect and cryptographic infrastructure firm BTQ Technologies have published a joint preprint on arXiv detailing the first concrete, circuit-level implementation of a One-Shot Signature (OSS) scheme. The breakthrough bridges the gap between abstract cryptographic theory and executable quantum circuits, providing explicit logical resource estimates and structural parameter matrices. The architecture operates within a “local quantum cryptography” framework, a hybrid model that requires no quantum internet. All network communication between external nodes remains entirely classical, while the cryptographic keys are physically bound to a fragile, uncloneable local quantum state that self-destructs upon measurement, enforcing strict single-use execution.