Cold-Atom Quantum Sensing — NASA TechPort Ecosystem¶
Created: 2026-04-05 (session 8) | Updated: 2026-04-08 (session 88)
Summary¶
NASA has invested continuously in cold-atom quantum sensing since ~2011 across at least 6 programs (IIP, GSFC IRAD, SBIR/STTR, ACT, STRG, DALI) and 3 mission directorates (STMD, SMD/ESD, SMD/BPS). The result is a striking component-system mismatch: industry has reached TRL 7 for key laser subsystems (AOSense), but the Earth-geodesy system (GSFC AIGG) has been stuck at TRL 4 since ~2018. One planetary-science instrument (JPL Atomic Lunar Seismometer, DALI program) reached TRL 5 targeting lunar lander deployment in 2025 — the highest-maturity atom interferometry instrument in TechPort outside Cold Atom Lab. No funded mission to fly it exists in TechPort.
New finding (session 87): AOSense's SBIR lineage extends to 2012 — two earlier Phase I/II projects ([9407]/[12882]) developed an atom interferometry accelerometer (not just laser components) and the Phase II carried a Transitioned_To SMD outcome in 2014. This is the earliest formal NASA transition record for atom interferometry sensing and likely seeded the GSFC AIGG program that appears in TechPort 3 years later.
The TRL gap in two lines: - Components TRL 7 (2021), geodesy system TRL 4 (2024), flight TRL 9 (CAL, different application) - Lunar seismometer TRL 5 (2025, DALI) — closest to flight readiness, but no lander mission integration visible in TechPort
Applications Targeted¶
Four distinct application streams appear in TechPort, with a fifth emerging:
- Earth gravity geodesy — atom interferometer gravity gradiometer for ice-melt and water flow monitoring (successor to GRACE). Primary driver of GSFC AIGG lineage.
- Navigation and timing — inertial sensors and atomic clocks for GPS-denied precision navigation. Primary driver of AOSense SBIR ladder.
- Fundamental physics — BEC experiments in microgravity (Cold Atom Lab), tests of equivalence principle (SUPREME-QG NIAC).
- Planetary seismometry — atom interferometry for measuring seismic waves and gravity tides on the lunar surface (JPL DALI seismometer). The most advanced flight-targeting application in TechPort at TRL 5.
- Rydberg atom sensors (emerging, post-2023) — microwave/RF radiometry via Rydberg atoms (ColdQuanta, Opto-Atomics). Different physics from cold-atom interferometry but related technology base.
Thread 1: GSFC AIGG — The Stuck System¶
GSFC has been developing the Atom Interferometer Gravity Gradiometer (AIGG) continuously since 2011, under the Earth Science Technology Office (ESTO). The lineage:
| Project | Program | Dates | TRL | Notes |
|---|---|---|---|---|
| 10968 Atomic Gravity Gradiometer | IIP | 2011–2015 | 4→5 | First IIP grant; terrestrial demonstration + microgravity sim |
| 15095 Cold Atom Gravity Gradiometer | IIP | 2014–2018 | 3→? | Second IIP; space-based single-tensor-component design |
| 93262 AIGG Simulation Environment | GSFC IRAD | 2017–2018 | 2→3 | Software/modeling support |
| 93289 AIGG Risk Reduction | GSFC IRAD | 2017–2018 | 3→4 | Components/subsystems risk reduction |
| 40624 Semiconductor MOPA for AIGG | GSFC IRAD | 2015–2016 | 3→4 | Laser power scaling |
| 40644 STMD Laser Lifetest | GSFC IRAD | 2015–2017 | 3→4 | Space qualification path for AIGG laser |
| 117119 AIGG Technology Maturation | GSFC IRAD | 2022–2024 | 4→4 | No TRL progress; target was 4 |
| 146754 QuEST Lab Laser Cooling | GSFC IRAD | 2023–2025 | 1→2 | Building new test bed for ultra-cold Cs sources |
AIGG science rationale (from simulation image, file 28320, read session 88): The chart below shows AIGG projected performance vs. GRACE. At spherical harmonic degree 20–80 (spatial resolution 250–977 km), the AIGG (red) outperforms GRACE (black) by 3–10× in Equivalent Water Height [cm]. The 3-beam AIGG config (orange) outperforms single-beam by ~2× at all scales. The target signals are ice-melt and groundwater (the blue Hydrology line is the physical signal; AIGG resolves it whereas GRACE cannot at fine scales). This is the core Earth Science case for the mission.
QuEST Lab testbed architecture (from block diagram, file 315872, read session 88): The diagram below shows the complete GSFC cold-atom laser cooling system. It is a full 2D MOT + 3D MOT setup with narrow-linewidth laser modules (master + slave), detuning/combining/switching, and a Physics Platform managing 6 laser beams into the 3D MOT and 4 beams into the 2D MOT/PICAS (Permanent Magnet Integrated Compact Atom Source). The hardware photo shows the actual built system. This is not a paper design — it is an operating testbed as of 2023–2025.
Key finding: The 2022–2024 IRAD project (117119) set its TRL target at 4 — not 5. After a decade of investment, GSFC is not even aiming to advance the system to TRL 5. The two library items are a website link and a logo image, indicating minimal deliverables.
The parallel 2023–2025 QuEST Lab project (146754) is starting from TRL 1 on a new laser cooling test bed. This suggests GSFC identified a fundamental atom-source bottleneck that requires rebuilding the laser cooling architecture rather than continuing system integration. The AIGG stall is likely due to insufficient cold-atom flux, not instrument design.
AIGG gap hypothesis (suggestive, not confirmed): Cs atom source flux is insufficient for the measurement precision required at the system level. The QuEST Lab work targets "ultra-cold, high-atom number cesium sources" as the specific technical gap. This would explain why component TRL advances (lasers, detectors) have not translated to system progress.
Also in this thread, two earlier NIAC grants at GSFC for atom interferometry gravity wave detection (not geodesy): - 11562 (2012–2013, TRL 2→3): Phase I concept - 13750 (2013–2015, TRL 4→5): Phase II maturation — outcome: Transitioned_To SMD + DoD (confirmed session 34). One of only 2 NIAC projects reaching TRL 5; high-TRL NIAC completions are more likely to have traceable follow-on, consistent with the 10/13 TRL 4-5 NIAC projects showing Transitioned_To records.
These are conceptually distinct from AIGG (gravity waves vs. gravity field mapping) but share the atom interferometry technology base. The DoD transition suggests the gravitational wave detector concept was of interest beyond NASA (likely for inertial navigation, underground sensing, or fundamental physics verification).
Thread 2: JPL Cold Atom Lab — The Flown System¶
The Cold Atom Lab (CAL) is the only NASA cold-atom system with flight heritage and the only one at TRL 9.
| Project | Program | Dates | TRL | Notes |
|---|---|---|---|---|
| 96810 Cold Atom Lab | PSRP | 2012–2020 | 4→9 | Development and launch; PSRP = Physical Sciences Research Program (SMD/BPS) |
| 97125 Cold Atom Lab (ops) | FPP | 2020–2027 | 4→9 | Active — operations and upgrades on ISS; FPP = Fundamental Physics Program |
CAL launched in 2018, produces BEC clouds of Rb/K/Na atoms on ISS for fundamental physics experiments (matter-wave interferometry, equivalence principle tests, quantum gas mixtures). It is funded by SMD's Biological and Physical Sciences division — not Earth Science, not STMD. The goal is fundamental physics, not Earth observation.
Critical distinction: CAL's TRL 9 does not help AIGG's TRL 4. They share cold-atom physics but serve different purposes: - CAL: ultra-cold dilute gas for fundamental physics in zero-g (minutes of free-fall time) - AIGG: precision gravity gradient measurement with tight timing (short interrogation cycles, Earth orbit)
Thread 3: AOSense SBIR Component Ladder — The Highest TRL Path¶
AOSense (San Jose, CA; also listed as Sunnyvale, CA) has pursued a consistent Phase I → Phase II SBIR ladder since 2012, reaching TRL 7 for cold-atom laser components. The full lineage (session 87 audit):
| Project | Program | Dates | TRL | Component |
|---|---|---|---|---|
| 9407 Accelerometer Phase I | SBIR | 2012 | 2→3 | Atom interferometry accelerometer design (single-axis, space applications); PM: Babak Saif (GSFC) |
| 12882 Accelerometer Phase II | SBIR | 2012–2014 | 3→4 | Full accelerometer build (sensor head + laser + electronics); PM: Ritva Keski-Kuha (GSFC); Transitioned_To → SMD (2014) |
| 93411 CALM Phase I | SBIR | 2017 | 3→5 | Cold Atom Laser Module (complete laser system for cold-atom sensors) |
| 101846 CALM Phase II | SBIR | 2018–2022 | 4→7 | CALM — TRL 7 complete laser module |
| 102583 CALM Phase II-E | SBIR | 2020–2021 | 5→7 | CALM — second TRL 7 record for same product |
| 94763 TACOS Phase I | SBIR | 2018–2019 | 3→4 | Tapered Amplifier for Cold-Atom Optical Systems |
| 102310 TACOS Phase II | SBIR | 2019–2021 | 1→7 | TACOS — TRL 7 compact flight-packaged laser amplifier |
Critical new finding (session 87): The 2012–2014 accelerometer Phase II (12882) carries a Transitioned_To → SMD outcome record. This is the first formal NASA program-level transition record for atom interferometry sensing technology. Both GSFC PMs (Babak Saif and Ritva Keski-Kuha are instrument scientists at GSFC, not program managers) suggest this accelerometer fed directly into GSFC's Earth science technology program — likely the IIP grants (AIGG lineage) that appear in TechPort starting 2011–2014. The 3-year gap between this transition (2014) and the first AIGG IRAD entries (2017) is consistent with a standard GSFC instrument development cycle.
AOSense 10-year arc in one line: Space accelerometer TRL 4 (2014, → SMD) → 3-year gap → CALM/TACOS laser components TRL 7 (2021). The accelerometer project validated the atom interferometry concept at system level; CALM/TACOS built the enabling laser subsystems at component level. The AIGG program appears to have grown from the 2014 SMD transition.
The TACOS project is the most visible component: a compact (flight-packaged) tapered amplifier delivering >1W at 852nm (Cs resonance), confirmed TRL 7 via hardware image (document 373427). AOSense achieved TRL 7 on both the master laser system (CALM) and the power amplifier (TACOS) by 2021.
AOSense is the commercial component supplier for any future cold-atom space instrument targeting Cs. No equivalent competitor appears in TechPort at TRL 7. Their components remain Closed_Out — no Infused_To record in TechPort (confirming the Closed_Out masking pattern from SBIR high-TRL analysis).
Thread 4: ACT Program — Earth Science Instrument Investment¶
Three ACT (Advanced Component Technology Program) projects target cold-atom sensing for Earth science. ACT is an SMD/Earth Science program (not STMD), part of the Earth Science Technology Office (ESTO). 66 total ACT projects; 82% are TX08.
| Project | Lead | Dates | TRL Result | Focus |
|---|---|---|---|---|
| 145042 | Vescent Photonics | 2023–2025 | 2→3 (target 4) | Compact frequency-agile laser for space-based LPAI and atomic clocks |
| 145043 | Yale University | 2023–2026 | 2→2 (target 4) | Integrated acousto-optics for chip-scale atom interferometers |
| 145049 | ColdQuanta, Inc. | 2023–2026 | 2→2 (target 4) | Rydberg atom microwave radiometer for Earth atmosphere sounding |
Key observations: - Neither Yale nor ColdQuanta reached their TRL targets. - Vescent made partial progress (TRL 3 vs. target 4). - These are 2-3 year concept maturation grants — the ACT program appears to fund early-stage component exploration. - The Vescent project explicitly cites spaceborne quantum gravity gradiometry (QGG) as the target application, linking to the AIGG geodesy goal. - ColdQuanta's Rydberg radiometer is a different physics from cold-atom interferometry: highly excited Rydberg atoms as SI-traceable microwave antennas, not inertial sensors. Application: atmospheric sounding at 60/183 GHz. This is a new direction not previously in the AIGG/CAL lineage.
Thread 5: Emerging Academic Work (STRG + Other)¶
| Project | Program | Dates | TRL | Notes |
|---|---|---|---|---|
| 158402 UT Austin Epitaxial Vacuum Cavities | STRG | 2024–2028 | 2→3 | Chip-scale vacuum cells via epitaxial growth — novel manufacturing for cold-atom miniaturization |
| 96406 UF Integrated Inertial Sensors | IIP | 2020–2022 | 2→3 | CubeSat-scale cold-atom sensor for geodesy constellation |
The UT Austin STRG project targets a manufacturing breakthrough: growing vacuum cavities epitaxially rather than glass-blown or machined. If successful, this could enable chip-scale cold-atom sensors compatible with CubeSat mass/volume budgets. TRL 2→3, early stage.
Other Suppliers in TechPort¶
Multiple SBIR vendors at TRL 3-4 supplying laser components for cold-atom sensors:
| Vendor | Focus | TRL | Project | Status |
|---|---|---|---|---|
| Opto-Atomics | Cs atom interferometer laser (Phase I) | 2→4 | 154486, 125749 | Completed |
| Opto-Atomics | Cs atom interferometer laser (Phase II) | ? | 157989 | Active 2024–2026 |
| Freedom Photonics | 850nm hybrid integrated narrow-linewidth laser | 2→4 | 113031 | Completed |
| Vescent Photonics | Ultra-narrow PIC lasers for QKD/sensors | 2→4 | 113566, 154344 | Completed |
| Vescent Photonics | Optical frequency synthesizer for quantum applications | 2→5 | 158714 | Active 2024–2026 |
| ADVR | Integrated photonics (acousto-optic) for atomic sensing | 3→4 | 18317 | Completed |
| ADVR | Visible light phase/amplitude modulators for quantum sensors | ? | 157993 | Active 2024–2026 |
| Rydberg Technologies | Compact Rydberg laser frequency stabilization | 2→3 | 154648 | Completed |
| Rydberg Technologies | Compact Rydberg laser package (Phase II) | 3→6 | 158674 | Active 2024–2026 |
| NP Photonics | Blue/visible lasers for optical atomic clocks | 3→5 | 158184 | Completed |
| OEwaves | Miniature Cs laser for atom interferometer | 1→3 | 154652 | Completed |
| Vapor Cell Technologies | Additively manufactured laser module (AM-HOLD) | 3→4 | 154610 | Completed |
2024–2026 active SBIR cluster: Four suppliers are simultaneously pursuing Phase II cold-atom laser work as of the 2024 SBIR cohort — Opto-Atomics (Cs interferometer laser), Vescent (frequency synthesizer), ADVR (visible modulators), and Rydberg Technologies (Rydberg laser package). This represents continued commercial investment in the component layer even as the AIGG system remains stalled. A healthy supplier ecosystem exists at TRL 3-4. The component supply chain is maturing; the missing link remains system integration.
ColdQuanta Trajectory¶
ColdQuanta (Boulder, CO) is notable for diversification. They started with cold-atom chip interferometers for NASA SBIR (~2012–2017, TRL 2→3), then pivoted to quantum communications:
| Project | Program | Dates | TRL | Focus |
|---|---|---|---|---|
| 9153 High-Flux Ultracold-Atom Chip | SBIR | 2012 | 2→3 | BEC interferometry Phase I |
| 17878 High-Flux Ultracold-Atom Chip | SBIR | 2014–2017 | 2→3 | Phase II — still TRL 3 after full Phase II |
| 94504 Atomic System for QSC | SBIR | 2018–2019 | 2→3 | Quantum communications (Rb trap) |
| 102296 Atomic System for QSC | SBIR | 2019–2023 | 3→5 | Quantum repeater memory module |
| 145049 Rydberg Radiometer | ACT | 2023–2026 | 2→2 | Rydberg atoms for microwave sensing |
ColdQuanta's atom interferometry work stalled at TRL 3 despite two SBIR phases (2012–2017). They shifted to quantum communications and then to Rydberg sensing. Their Phase II atom interferometry result (still TRL 3) vs. AOSense's CALM Phase II (TRL 7) suggests fundamental capability differences: AOSense specializes in laser systems while ColdQuanta specializes in vacuum cell technology.
Thread 6: JPL Atomic Lunar Seismometer — The Highest-Maturity Mission-Targeted Instrument¶
PI: Nan Yu (JPL). DALI = Development and Advancement of Lunar Instruments (SMD program).
| Project | Program | Dates | TRL | Notes |
|---|---|---|---|---|
| 96503 Lunar Super Low-Frequency Atomic Seismometer | DALI | 2019–2025 | 4→5 (target 6) | JPL/Caltech, platform: lander deployment |
Concept: Free-falling laser-cooled atomic cloud in a sealed titanium cell. On the lunar surface, atoms free-fall under g_moon (~1.62 m/s²). A laser ruler measures the motion of the cell (attached to the surface) relative to the free-falling atoms — this directly measures ground acceleration (seismometry) and gravity (gravimetry). The measurement system is inherently drift-free because atoms in free fall are ideal test masses with no spring mechanism or measurement back-action.
Science goals (from quad chart): - Lunar interior structure via seismic waves and global normal modes (10 mHz to 1 mHz) - Gravity tide measurements on timescales of days-months (internal structure/core diagnostics) - Long-period surface waves and normal modes at sub-mHz frequencies — beyond Apollo seismometer capability
Performance target: 3.5 nm/s²/√Hz seismometry, 2 nm/s²/√Hz gravimetry on the lunar surface.
TRL history: The project milestones planned: - Year 1: Engineering design + risk reduction - Year 2: Subsystems construction + electronics/software - Year 3: Brassboard integration → TRL 5, environment tests → TRL 6
TechPort records TRL 5 (target was 6) — Year 3 environment tests were either incomplete or not formally verified by project close. Still: TRL 5 is "brassboard validated in relevant environment" — a real instrument, not just a design.
Pedigree (from project description): Nan Yu's group at JPL previously demonstrated (1) a transportable atomic gravity gradiometer and (2) miniaturized it to a shoebox-sized accelerometer. DALI was the mission-targeting step — the explicit goal was "ready to be infused into a lunar lander mission."
Gap confirmed: As of April 2026, no GCD, FO, or CLPS project in TechPort shows integration of this instrument into a funded flight. Nan Yu's instrument reached TRL 5 as of November 2025, seeking a lander ride.
Supply chain dependency: This system almost certainly requires the kind of compact laser systems AOSense (CALM/TACOS) and Vescent developed through SBIR. The Cs/Rb atom cooling lasers at TRL 7 are the upstream component to this TRL 5 system. The supply chain is there; the platform isn't.
Thread 7: Additional Component Suppliers (Session 86 Audit)¶
Additional suppliers not previously in Thread 5 table:
| Vendor | Focus | TRL | Project | Status |
|---|---|---|---|---|
| Freedom Photonics | 852nm high-power tunable laser for GSFC AIGG (dedicated) | 2→5 | 102738 | Completed 2021 |
| Q-Peak, Inc. | Low SWaP ultra-high-vacuum (UHV) chamber for atom interferometer | 4→6 | 125622 | Completed 2025 |
| Digital Optics Technologies | Multi-axis atom interferometry gyroscope (Large Momentum Transfer Point Source AI) | 3→5 | 102097 Phase I; 102591 Phase II | Completed 2024 |
| Brimrose Technology | UV/Visible α-BBO acousto-optic modulators for atomic interferometry | 3→4 | 158342 | Completed 2025 |
Notable additions: - Freedom Photonics [102738] (SBIR 2020-2021, TRL 2→5): Explicitly a laser supplier to the GSFC AIGG program. Description states it was developed for "atomic interferometry gravimeters being developed by NASA GSFC." Freedom Photonics also explored photonic integrated circuits (PICs) at this wavelength. This is the commercial supplier to the stuck AIGG system. - Q-Peak [125622] (SBIR 2022-2025, TRL 4→6): Compact UHV vacuum chamber at TRL 6 — vacuum systems are a key bottleneck for miniaturization because glass-blown or machined cells are bulky and fragile. A TRL 6 compact UHV chamber is a meaningful advance toward portable cold-atom sensors. - Digital Optics Technologies [102591] (SBIR 2019-2024, TRL 3→5): This is the navigation/PNT application (gyroscope, not gravimeter). Multi-axis gyroscope using Large Momentum Transfer (LMT) point source atom interferometry — sensitivity scales as k²T², so LMT (larger k) gives higher sensitivity without longer interrogation time T. A TRL 5 multi-axis inertial gyroscope is significant for GPS-denied navigation.
Ecosystem Map¶
Application System Level Component Level Flight Heritage
──────────────────────────────────────────────────────────────────────────────
Earth Geodesy GSFC AIGG AOSense CALM/TACOS NONE (TRL 4 stuck)
(Gravity Gradient) TRL 4 ● stalled TRL 7 ✓ (2021)
Freedom Ph [102738] Q-Peak UHV TRL 6
laser supplier TRL 5
Lunar Seismometry JPL DALI Seismometer Nan Yu/JPL NONE ← GAP
(Planetary Science) TRL 5 ✓ Nov 2025 all-JPL team No funded lander mission
● closest to flight target 6, got 5
Fundamental JPL CAL — ISS TRL 9 ✓
Physics (BEC) TRL 9 ✓ Active (operating 2018–2027)
Inertial Nav/ Digital Optics Tech AOSense CALM NONE
Timing (PNT) gyroscope TRL 5 TRL 7 ✓
(multi-axis LMT)
Rydberg Atom No system yet ColdQuanta/ NONE
Radiometry — Opto-Atomics
TRL 2–4
Chip-Scale UT Austin Multiple suppliers NONE
Cold Atom TRL 2 (2024–2028) Nexus PIC TRL 2→5
Key Findings¶
-
Component-system mismatch is the defining feature. AOSense reached TRL 7 for flight-quality cold-atom laser components in 2021. GSFC AIGG remains at TRL 4 in 2024. No system integration project at GCD, TDM, or FO level exists in TechPort (gap confirmed by exhaustive search session 87: GCD "atom interferometry" query returned 55 projects, zero cold-atom gravimeters; FO "atom interferometer gravimeter" query returned 23 projects, zero cold-atom gravimeters).
-
GSFC AIGG stall points to atom source problem. The 2022–2024 IRAD project set TRL target at 4 (no advancement expected). The parallel QuEST Lab project explicitly targets "high-atom number" Cs sources. This suggests the system bottleneck is the cold-atom source, not the laser components.
-
CAL TRL 9 does not bridge to AIGG. Cold Atom Lab's flight heritage is in a fundamentally different application (BEC physics) with different operational requirements. The TRL 9 does not mean "cold-atom sensing is ready for Earth geodesy."
-
ACT program represents renewed Earth Science interest, but early stage. Three 2023–2026 ACT grants targeting cold-atom quantum sensing for Earth observation. None reached TRL targets. This is a 2-3 year exploration, not a maturation program.
-
Rydberg atom sensing is an emerging separate thread. ColdQuanta, Opto-Atomics, and the ACT Rydberg radiometer represent a new direction — RF/microwave sensing via Rydberg atoms, not gravity sensing. This is unrelated to AIGG but shares some laser technology.
-
No AI/ML integration visible. No projects combining cold-atom sensing with onboard data processing or autonomy, despite this being a logical next step for space deployment.
Session 19 Update: Quantum Photonics Infrastructure Layer (TX08 Active SBIR)¶
A survey of the 30 active SBIR TX08 projects (April 2026) reveals 6/30 (20%) focused on quantum sensing photonic infrastructure — a layer below the component level that Vescent and Rydberg Technologies represent.
Nexus Photonics dual-project PIC foundry play: - 182916 (Active 2025–2027, TRL 2→5): PICs at 780nm — Rubidium D2 line (atom interferometers, Rb clocks). Goal: multi-project wafer (MPW) foundry capability. - 158689 (Active 2024–2026, TRL 3→5): PICs at 674nm — Strontium-88+ clock transition (Sr optical atomic clocks). Goal: same MPW wafer process, different wavelength.
Nexus is building a heterogeneous SiN-based PIC platform that standardizes fabrication at quantum-relevant wavelengths. An MPW foundry democratizes quantum sensor development the same way TSMC democratized chip design — any group can specify a chip layout and share a wafer run. This would remove a major barrier to quantum sensor miniaturization.
Physical Sciences Inc. (182912, Active 2025–2027): On-demand photon number state source (single-photon and few-photon states). This is quantum light source infrastructure for sensing, imaging, and communication.
Updated ecosystem diagram (April 2026):
Application System Level Component Level PIC Infrastructure
──────────────────────────────────────────────────────────────────────────────
Earth Geodesy GSFC AIGG AOSense CALM/TACOS Nexus 780nm PIC MPW
(Gravity Gradient) TRL 4 ● stalled TRL 7 ✓ (2021) TRL 2→5 (Active)
Optical Clocks No NASA system — Nexus 674nm PIC MPW
(Sr+ timekeeping) in TechPort TRL 3→5 (Active)
Vescent OFC TRL 2→5
Fundamental JPL CAL — —
Physics (BEC) TRL 9 ✓ Active
Rydberg RF sensing No system yet Opto-Atomics Phase II Rydberg Tech TRL 3→6
TRL 3→6 Cornerstone LF TRL 3→5
Chip-Scale UT Austin Multiple suppliers Nexus PICs
Cold Atom TRL 2 (2024–2028) TRL 3–4 (shared infra)
The quantum photonics layer is now more visible than in prior sessions. This is the foundation beneath the foundation — before you can build a TRL 7 laser module (AOSense CALM), you need PIC foundries at the right wavelengths.
Open Threads¶
- What stopped AIGG? The TRL 4 target in 117119 implies GSFC has given up on near-term advancement. Is this resource-constrained, or is there a specific technical barrier? QuEST Lab (146754) may answer this by 2025.
- Will any ACT component reach TRL 5? The 2023 cohort (Vescent, Yale, ColdQuanta) didn't meet targets. Are there follow-on ACT grants in TechPort?
- UT Austin chip-scale vacuum (158402) — this 2024–2028 STRG grant represents the most novel manufacturing approach. Worth revisiting at program end.
- SUPREME-QG NIAC (158294, Northwestern, 2025–2026) — quantum entanglement for equivalence principle test. Different from gravimetry but may generate new cold-atom system concepts.
- AOSense CALM components — have these been procured by any NASA instrument program outside TechPort? No Infused_To in TechPort. Web search would be needed (outside KB scope).
- Nexus Photonics MPW timeline — both projects end 2026-2027. If MPW capability is established, this will be a significant enabling development. Monitor for completion outcomes.
Cross-References¶
- TX08 sensors page — cold-atom cluster in TRL 7 SBIR cohort (AOSense CALM, TACOS, AIGG)
- topics/outcome-tracking.md — Closed_Out masking; AOSense TRL 7 components have no Infused_To
- programs/sbir-sttr.md — SBIR as the pathway for commercial cold-atom component development
- programs/strg.md — STRG funding UT Austin chip-scale work
- programs/niac.md — 13750 is one of 13 NIAC TRL 4-5 outliers; atom interferometry GW detector TRL 4→5, Transitioned_To SMD + DoD