Hypnos-Q1: Architectural Integration of Real Quantum-Hardware Measurements into the Forward Pass of a 4B Language Model

We present Hypnos-Q1, an open-weight 4-billion-parameter reasoning language model in whicha single architectural modification couples the model to a superconducting quantum processor.A dedicated special token, <|quantum_sig|>, has its embedding replaced, at every forwardpass, by a learned linear projection of a six-dimensional measurement vector obtained from out-of-time-order correlator (OTOC) experiments on IBM’s ibm_kingston (Heron r2, 156 qubits).