Tick 37 — 2026-05-22 11:15 UTC

Thread: R20 (quantum sensing integration) — 8th exotic vertical Verdict: Recovers what R13 NEGATIVE physically excluded. Demonstrates the loop's architecture is sensor-agnostic — same primitives work with classical CSI today and quantum sensors in 5-20y.

What shipped

• docs/research/sota-2026-05-22/R20-quantum-sensing-integration.md — full vertical sketch with quantum-vs-classical comparison table + nvsim integration sketch.

Why this tick

User opened docs/research/quantum-sensing/11-quantum-level-sensors.md — explicit signal toward quantum-sensing integration. The repo already has nvsim (NV-diamond magnetometer simulator, ADR-089) as a standalone leaf crate.

Four quantum modalities catalogued

Sensor	Sensitivity	Edge deployment
NV-diamond magnetometer	1 pT/√Hz	5-10y
Atomic clock (Cs/Rb chip-scale)	10⁻¹⁵ stability	5-10y
SQUID magnetometer	1 fT/√Hz	15-20y (cryo)
Quantum-illuminated radar	+6 dB SNR	15-20y

Classical vs quantum loop primitive comparison

Capability	Classical	Quantum (5-15y)	Improvement
Breathing rate	±1 BPM	±0.1 BPM	10×
HR rate	±5 BPM	±0.5 BPM	10×
HRV contour	NOT possible (R13)	NV-magnetometer	enables what was impossible
BP estimation	NOT possible (R13)	atomic-ToA PWV	enables what was impossible
Position precision	25 cm	3 mm	80×
Multi-scatterer penalty	4.7 dB (R6.1)	~1 dB	3.7 dB recovery
Through-rubble	2 m (R18)	5 m+	2.5×

What R13 NEGATIVE no longer rules out (with quantum)

R13 ruled out HRV contour + BP from CSI due to 5 dB SNR shortfall. NV-diamond cardiac magnetometry resolves this — magnetic fields from heart contractions (~50 pT) are detectable, contour-preserving, and penetrate through clothing/rubble. R20 explicitly identifies which R13 conclusions are physics-bound vs sensor-bound.

Five-cog speculative roadmap

Cog	Timeline	Primitive
cog-quantum-vitals	5y	nvsim + R14 + R15
cog-mm-position	10y	atomic clock + R1 + R3.2
cog-deep-rubble-survivor	15y	nvsim + R18 + drone
cog-quantum-illuminated-pose	15y	quantum illum + R6.1 + ADR-079
cog-ICU-meg	20y	SQUID + R14 V3

Three deployment scenarios

Scenario	Timeline	Cost note
Hybrid quantum-classical ICU bed	5y	$50/bed (4× ESP32 + NV-diamond ~$200) vs $3,000 monitor
Atomic-clock mm-precision multistatic	10y	high-security access control without biometric capture
NV-drone disaster magnetometry	15y	2.5× rubble depth over R18's classical estimate

Integration with existing nvsim (ADR-089)

nvsim is the repo's NV-diamond simulator (standalone leaf, WASM-ready per CLAUDE.md). R20 sketches three integration points:

nvsim output	Loop primitive
Magnetic-field time series	R14 V1 vitals fusion (replaces HRV-contour stub)
Field map	R12 PABS structural-anomaly extension
Stability indicator	R7 mincut additional consistency channel

Future cog: cog-quantum-fusion or cog-quantum-vitals.

The cleanest "loop is sensor-agnostic" demonstration

R20 says: even when classical CSI hits its physics floors (R13 5-dB shortfall, R1 bandwidth-bound CRLB, R6.1 multi-scatterer penalty), the architecture stays the same; only the sensor swaps in. R6 forward model, R12 PABS, R7 mincut, R3 cross-room re-ID, R14 V1/V2/V3 framework — all apply to quantum sensors with parameter swaps.

This is the loop's architectural value proposition stated in its most explicit form.

Honest scope (very important)

• Most quantum tech is 10-20y from edge deployment ($200 / 1 cm³ NV-diamond requires 5-10y MEMS work)
• Atomic clocks at 10⁻¹⁵ in 1 cm³ require breakthrough integration
• SQUID at room temp needs room-temp superconductors (may not happen)
• Quantum-illuminated radar at edge needs room-temp single-photon detectors
• All "improvement" numbers are theoretical bounds; real-world 30-70%
• nvsim is a SIMULATOR, not real hardware
• Loop has NO real quantum sensor on bench

R20 special status

• 8th exotic vertical
• First requiring quantum hardware for full realisation
• Most explicitly 10-20y horizon matching cron prompt criteria
• Recovers R13 NEGATIVE via different sensing modality (sensor-bound, not physics-bound after all)

Composes with every loop thread

R1 / R3 / R6 / R6.1 / R12 / R12.1 / R13 NEGATIVE (recovered) / R14 V1/V2/V3 / R15 / R16-R19 verticals / ADR-089 nvsim / ADR-113 placement.

Coordination

ticks/tick-37.md. No PROGRESS.md edit. Branch research/sota-r20-quantum-sensing.

Loop status (~37 ticks, ~45 minutes to cron stop)

• 18 research threads (R1, R3, R5-R15, R16, R17, R18, R19, R20)
• 8 exotic verticals (R10, R11, R14, R16, R17, R18, R19, R20)
• 6 loop ADRs (105-109, 113) + 3 existing
• 3 negative result categories (R12 revisited POSITIVE, R13 floor, R3.1 architecture)
• R13 negative result conditionally recoverable via R20 quantum
• Production roadmap shipped
• 2 self-corrections, 3 honest-scope findings

00-summary.md to follow at 12:00 UTC stop.