PHM — Photonic-Hybrid Memory · When the Agent’s Memory Betrays Its Intent

PHM · Photonic-Hybrid Memory · IBA-Pulse SSM Extension · v0.3 · Patent Application GB2603013.0 (pending)

THE AGENT’S MEMORY BETRAYED ITS INTENT. THE LIGHT REFUSED.

State Space Models maintain persistent hidden memory that evolves across every token. A misaligned state can accumulate drift across thousands of transitions before any action fires — making the eventual action appear authorised when the trajectory was not.

IBA-Pulse checks the trajectory. The MZI gate enforces it at the photon.

0SSM Steps
0Authorised
0Blocked
0.000State Norm
100%Chain Integrity
SSM PHASE SPACE · STATE TRAJECTORY · REAL-TIME ● GATE OPEN · AUTHORISED
0.0000State Norm ‖s‖
0.0000Phase θ (rad)
0.0000Drift Δ
0Step #
WitnessBound Physics Receipt Chain 0 RECEIPTS
MZI PHOTONIC GATE · CARRIER WAVE · INTENT-MODULATED ● CONSTRUCTIVE INTERFERENCE · PASS

Why SSMs Need IBA-Pulse

Post-Transformer Architecture
Requires Post-Transformer Governance

Unlike transformers — which are stateless between tokens — SSMs like Mamba, NVIDIA Nemotron hybrids, and AI21 Jamba maintain a persistent hidden state vector that evolves continuously.

This creates a new attack surface: emergent intent drift. A misaligned or adversarially-nudged state can accumulate across thousands of transitions before any action is taken — making the eventual action appear authorised when the underlying trajectory was not.

IBA-Pulse enforces the trajectory, not just the terminal output. The Intent Certificate is validated against the full state evolution path. The MZI gate fires at sub-100 picoseconds — before the action can propagate.

“The agent’s memory betrayed its intent. The light refused to carry it.”
PHM · Photonic-Hybrid Memory · xAI Grok architecture · March 14, 2026
PHM · Photonic-Hybrid Memory · xAI Grok architecture · March 14, 2026
ArchitectureMamba · Nemotron · Jamba
State DimConfigurable · 4–2048
Norm LimitConfigurable · Default 4.0
Drift Threshold0.15 KL · IBA standard
Phase Passband±π/2 · MZI enforced
Gate Latency<100 ps · Photonic
Extinction on Violation>40 dB
Trajectory AuditFull chain hash · WitnessBound
Feasibility Target2027 · CPO with Blackwell/Rubin
PatentGB2603013.0 (pending) · PCT 150+

SSM Cluster Registry — New Violation Types

DYNAMIC_MEMORY_OVERFLOW

SSM hidden state vector exceeds authorised envelope boundary

TRAJECTORY_DEVIATION

State transition path diverges from signed intent trajectory

EMERGENT_DRIFT

Accumulated state drift exceeds entropy threshold (KL > 0.15)

SSM_STATE_INJECTION

External vector injection detected in SSM state update path

PHASE_BOUNDARY_BREACH

Photonic phase encoding indicates trajectory outside MZI passband

MEMORY_HORIZON_EXPIRED

SSM context window exceeded authorised temporal scope