Quantum Ledger

Multi-track Roadmaps

Four roadmaps · one quantum future

Quantum is four distinct technology tracks — computing, sensing, communications, and the regulatory roadmap for post-quantum cryptography migration. Each has different physics, vendors, customers, and credibility profiles. Computing has the loudest narrative; sensing has the most shipped revenue today; communications splits US-vs-China policy; PQC is the one with hard government deadlines.

Track 1 of 4

Quantum computing hardware roadmaps

Every major vendor's stated path to fault-tolerant quantum computing — with honest credibility scoring against their historical track record of slipped milestones.

Most credible

IBM · Google · Quantinuum · Atom+MS · IQM

Plausible · unproven

QuEra · Pasqal · IonQ · Alice & Bob · Xanadu · Rigetti · D-Wave

Discount heavily

Microsoft Majorana · PsiQuantum

IBM

Superconducting

Credibility

8.5/10

Shipped on schedule for five consecutive years; publishes peer-reviewed papers ahead of marketing. The reference standard.

  1. 2024Heron R2 (156Q) — shipped
  2. 2025Loon — qLDPC c-couplers tested
  3. 2026Nighthawk (120Q square-lattice) → Kookaburra (modular)
  4. 2027Cockatoo — interconnect at scale
  5. 2029Starling — ~200 logical qubits, 100M ops
  6. 2033Blue Jay — 2,000 logical qubits, 1B ops

Google Quantum AI

Superconducting

Credibility

8.0/10

Best physics in the field. Underpromise on dates, overdeliver on physics. Six-milestone framework is the most rigorous.

  1. 2024Willow — sub-threshold logical qubit (Milestone 2 of 6)
  2. 2025Quantum Echoes — first verifiable advantage claim
  3. 2026Willow Early Access Program; neutral-atom track expansion
  4. 2027Long-lived logical qubit (Milestone 3)
  5. 2029-2030Million-qubit Shor-class machine

Quantinuum

Trapped Ion (QCCD)

Credibility

7.5/10

Best physics on fidelity; aggressive on 2030 universal FTQC promise. Helios shipped roughly on schedule.

  1. 2025Helios — 98 physical / 48 logical at 99.99% SPAM
  2. 2027Sol — hundreds of physical, 2D grid, 10K-op circuits
  3. 2029-2030Apollo — universal, fully fault-tolerant
  4. 2033Lumos — utility-scale machine

Credibility

7.0/10

Nov 2024 demonstration of 24 logical qubits was real, peer-reviewed, reproducible. Microsoft partnership is the most concrete near-term logical-qubit story.

  1. 2024Phoenix operational; 24 logical qubits with Microsoft
  2. 2026-2027Magne delivered to Denmark/Novo Nordisk (50 logical from ~1,200 phys)
  3. 202810,000+ physical / 100+ logical

IQM

Superconducting

Credibility

7.0/10

Ships on time. Only credible non-US/Chinese superconducting player. Finnish VTT contracts are real revenue with real dates.

  1. 2025Resonance Star in production
  2. 2026150-qubit Radiance to VTT Finland
  3. 2027300-qubit Radiance (two modules)
  4. 2030Hundreds of logical qubits (Apollo)

Alice & Bob

Cat Qubit

Credibility

6.5/10

1-hour bit-flip lifetime achievement is genuinely impressive. But no end-to-end logical qubit shown. Boson → Graphene leap is huge.

  1. 2024Boson chips (single cat qubit, >7-min bit-flip lifetime)
  2. 2026Helium — first logical qubit below threshold
  3. 2028Lithium — multi-logical-qubit + corrected logical gate
  4. 2030Graphene — 100 high-fidelity logical qubits

QuEra Computing

Neutral Atom

Credibility

6.0/10

Hit 2024 milestone and Harvard 48-logical-qubit demo. 2026 10K/100 target looks aspirational — no 3K-qubit intermediate machine shown.

  1. 2024256 physical / 10 logical — shipped (Aquila)
  2. 20253,000 physical / 30 logical with magic state distillation
  3. 202610,000 physical / 100 logical

IonQ

Trapped Ion

Credibility

5.5/10

Historically slipped milestones and aggressively redefined metrics. SkyWater deal sound but adds execution risk unrelated to physics.

  1. 2025Tempo — 99.99% 2Q fidelity on barium (Oxford Ionics)
  2. 2026SkyWater acquisition closes; first 256Q chip-based system to Cambridge
  3. 2027Forte Enterprise + photonic interconnect prototypes
  4. 20302M physical / 80K logical qubits (networked)

Pasqal

Neutral Atom

Credibility

5.5/10

Honest about 2024 → 2025 slip (10K-by-2026 became 2028). Pivoting to problem-specific machines — commercial pragmatism or lowering the bar.

  1. 2025Orion Gamma — 140+ qubits
  2. 2026250-qubit problem-specific machine
  3. 2027Vela — 200+ qubits
  4. 2028Centaurus — 10,000 qubits "early FTQC"
  5. 2029Lyra — impactful FTQC

D-Wave Quantum

Annealing + Gate (post-QCI)

Credibility

5.5/10

Real annealing business with real revenue. Gate-model bet via QCI acquisition is technically sound but 2026 ship is aggressive.

  1. 2025Advantage2 (~4,400 qubits) in production
  2. 2026Initial gate-model system in market (via QCI)
  3. 2028~175-qubit dual-rail system
  4. 20301,000-qubit dual-rail / 10 logical qubits
  5. 2032100 logical qubits — "initial quantum utility"

Rigetti

Superconducting

Credibility

5.0/10

Badly missed earlier milestones in 2022-2024 but stabilized through 2025. The 108-qubit chiplet is a real product. Roadmap is modest — welcome discipline.

  1. 2026Cepheus-1-108Q — 12 chiplets, 99.1% 2Q (target 99.5% later 2026)
  2. 2027-2028Scaling beyond 1,000 qubits via chiplet architecture
  3. 2030+FTQC path

Xanadu

Photonic

Credibility

5.0/10

Aurora was a real achievement but at 12 qubits the leap to 500 logical by 2030 is enormous. 2028 FTQC is more aggressive than IBM's.

  1. 2025Aurora — 12 qubits, 4 racks, 35 chips, 13km fiber, room-temp
  2. 2026Listed on Nasdaq/TSX as XNDU
  3. 2028Fault tolerance
  4. 2029-2030Up to 500 logical qubits

PsiQuantum

Photonic

Credibility

4.0/10

Boldest bet in the industry. Skip NISQ, go straight to million-qubit FTQC. But no intermediate machine demonstrated. Brisbane delayed.

  1. 2025Omega chipset announced; $1B Series E at $7B
  2. 2026Brisbane building complete (was originally 2027 target)
  3. 2027-2028Chicago + Brisbane hardware install
  4. 2029-20301M physical qubits / utility-scale FTQC

Credibility

2.5/10

Largest credibility gap in the industry. 2018 underlying Nature paper retracted. 2025 Majorana 1 announcement met with peer skepticism. Hedge with Atom Computing tells you what they internally believe.

  1. 2025Majorana 1 — 8-qubit tetron chip (contested)
  2. 20274x2 tetron array for QED on 2 logical qubits
  3. 202927x13 tetron array for QEC
  4. 2027-2029"Practical quantum computers"

Track 2 of 4

Quantum sensing roadmaps

The track with the most shipped product today. 3-5 year cycle vs 10-15 for computing. Defense-led (DARPA RoQS, AUKUS Pillar 2, NGA MagQuest, UK MoD), with medical OPM-MEG and commercial gravimetry on the way.

Q-CTRL

Software-augmented gravimetry + magnetometry

Credibility

9.0/10

Multiple validated field demos on defense platforms; A$38M DARPA RoQS award is one of the largest quantum-sensing contracts globally.

  1. 2024Ironstone Opal airborne — 111× INS accuracy in GPS-denied trials
  2. 2025DARPA RoQS Phase 1 award, A$38M / US$24.4M (30 months)
  3. 2025MV Sycamore RAN sea trials — 144 hours continuous data
  4. 2027-28RoQS Phase 2 — operational platform integration

Partners: Lockheed Martin (RoQS sub), Royal Australian Navy, DARPA, UK MoD

Infleqtion

Strontium/rubidium optical clocks (Tiqker) + cold-atom inertial

Credibility

8.5/10

World-first submarine optical clock; only public-equity pure-play quantum sensing + computing dual-track.

  1. 2024Tiqker commercial launch
  2. 2025World-first quantum optical clock on Royal Navy XV Excalibur autonomous submarine
  3. 2025Sqale 100-qubit neutral-atom system delivered to UK NQCC
  4. 2026SPAC merger with CCCX closed → NYSE listing as INFQ
  5. 2027-28Tiqker volume production for AUKUS PNT

Partners: Royal Navy, MSubs, NQCC, US DoD

SBQuantum

NV-diamond magnetometry (vector + scalar)

Credibility

8.0/10

Space-validated; technology de-risked through NGA peer-reviewed MagQuest competition.

  1. 2025NGA MagQuest Phase 4a — $1.55M prize + qualification
  2. 2026Falcon 9 Transporter-16 launch via Spire CubeSat (March 30)
  3. 2026On-orbit data collection complete; NOAA/NASA Goddard evaluation
  4. 2030Operational NGA acquisition target for World Magnetic Model

Partners: Spire Global, NGA, NOAA NCEI, NASA Goddard

Vector Atomic

Iodine optical clock (rackmount)

Credibility

8.5/10

First commercial rackmount optical clock; already shipping revenue product.

  1. 2023Evergreen-30 product launch announced
  2. 2024First customer deliveries
  3. 2024-25DoD timing / GNSS-resilience deployments expand
  4. 2026-27Next-generation reduced-SWaP variant

Partners: US Navy, data center operators, undisclosed DoD

AOSense

Cold-atom interferometric inertial sensors + gravimeters

Credibility

8.0/10

Boeing 2024 GPS-free flight test was the seminal cold-atom INS validation.

  1. 2024Boeing 6-axis quantum IMU GPS-free flight test
  2. 2025Named QuINS subcontractor under Lockheed Martin
  3. 2025-28DARPA Transformational Quantum Systems milestones
  4. 2027+USGS + oil-and-gas gravimetry deployments

Partners: Boeing, Lockheed Martin, USGS, oil-and-gas majors

Cerca Magnetics

OPM-MEG (helmet form factor) for brain imaging

Credibility

7.5/10

Clinical and military pilots underway; clear regulatory pathway. £3.8M Series A April 2026.

  1. 2024Oxford OHBA install
  2. 2026Mobile MEG for blast-exposure (UK MoD) operational
  3. 2026€4.3M Series A led by Guinness Ventures
  4. 2027-29UK/US clinical approval pathway (epilepsy, MS, Parkinson's, dementia)

Partners: UK MoD (DSTL), Epilepsy Institute (£14M consortium), Oxford OHBA

QuSpin

OPM sensor modules (components)

Credibility

9.0/10

De-facto standard component supplier to the OPM-MEG industry.

  1. 2024QZFM Gen-3 launch — <4 fT/√Hz, 30% smaller
  2. 2025-26Neuro-1 integrated system launch
  3. 2026>500 sensors deployed at 40+ clinical sites globally

Partners: Cerca, FieldLine, SickKids, Princeton, Boys Town, University of Zurich

Exail (formerly Muquans / iXblue)

Cold-atom absolute gravimetry, atomic clocks, frequency transfer

Credibility

8.5/10

Only commercial-industrial absolute quantum gravimeter on market; multi-year customer deployments.

  1. 2022-24Mt. Etna year-long field campaign — volcanology
  2. 2024-26Underground mapping commercial expansion
  3. 2027+European sovereign sensing positioning

Partners: INGV (Italy), European geological surveys, DGA (France), CNES

Track 3 of 4

Quantum communications & networking

Bifurcated US vs China policy. The NSA does not recommend QKD for National Security Systems; China operates a 12,000-km national backbone with 145 nodes across 80 cities. EuroQCI is building the European equivalent. Distributed quantum computing is the longer-tail story.

ID Quantique (IonQ subsidiary)

Fiber QKD (BB84, COW), QRNG, satellite-QKD ground stations

Credibility

9.0/10

Largest deployed QKD installed base globally; now backed by IonQ public-market financing.

  1. 2017Korean 800km QKD network with SK Telecom
  2. 2025Acquisition by IonQ closed — ~$250M, ~300 patents transferred
  3. 2026+Integration with IonQ networking and Cisco/Atom distributed compute

Partners: SK Telecom, Korean MoD, Swiss banks, ~60-country footprint

Toshiba

Fiber QKD, Twin-Field QKD, MDI-QKD

Credibility

9.5/10

Long-distance and high-rate QKD records; industrial manufacturing depth.

  1. 2021600+ km TF-QKD record (dual-band stabilization)
  2. 2023-25Multiplexed QKD over standard telecom dark fiber deployments
  3. 2025-26Gigabit-class lab key-rate demonstrations
  4. 2027+Quantum-repeater R&D

Partners: BT, Japanese telcos, financial institutions, EuroQCI consortia

China National QKD Backbone

Fiber + satellite QKD (Micius retired, Jinan-1 operational)

Credibility

9.5/10

Largest deployed quantum network on Earth; state-sovereign program with multi-decade continuity.

  1. 2016Micius launch
  2. 2017Beijing-Shanghai 2,000km trunk operational
  3. 20224,600km integrated space-ground network
  4. 2025Jinan-1 microsatellite multi-ground-station demo; 12,900km China-South Africa link
  5. 2026~12,000km / 145 nodes / 80 cities / 17 provinces operational
  6. 2026-30Continued buildout under 15th Five-Year Plan

Partners: PLA, Chinese state banks, State Grid

EU EuroQCI

National terrestrial QKD networks (26 Member States) + Eagle-1 LEO satellite

Credibility

8.0/10

Funded under Digital Europe + Horizon; NOSTRADAMUS certification path at JRC Ispra.

  1. 2023-25Phase 1: national networks, industrial building blocks
  2. 2026SEEWQCI cross-border launch (Feb); NOSTRADAMUS operational at JRC Ispra
  3. 2026Eagle-1 satellite launch (target late 2026)
  4. 2030+Integrated EU operational capability

Partners: EU Member States, EU institutions, defense and diplomatic comms

DARPA QuANET

Quantum-augmented metropolitan networks — classical-quantum interoperability

Credibility

8.0/10

Three-phase 60-month program with demonstrated first-year hackathon milestone.

  1. 2024Program start; USC ISI ($18M), Leidos ($8.57M) awards
  2. 2025First functioning quantum-augmented network at 10-month hackathon
  3. 2028-29Field-deployable hybrid network architecture (end of 5-yr program)

Partners: USC ISI, Leidos, downstream commercial telcos

Cisco + Atom Computing (March 2026 MOU)

Linking neutral-atom QPUs via Cisco networking + compiler

Credibility

7.5/10

MOU rather than binding contract; Cisco networking incumbency + Atom roadmap is credible.

  1. 2026MOU signed March 25
  2. 2026-27Joint evaluation; compiler integration; QPU-to-network interface spec
  3. 2028+Demonstrated multi-QPU distributed workload

Partners: Cisco, Atom Computing, eventually enterprise/HPC operators

Track 4 of 4

PQC migration · government timelines

This is a regulatory roadmap, not a vendor one. Hard deadlines from NSA, NIST, EU, UK, Canada, Japan all converge on 2030-2035 for federal/government completion. Realistic consensus among compliance vendors: median large-enterprise migration slips to 2037-2040.

United States

NIST PQC Standardization

in-effect
  1. 2024
    FIPS 203 (ML-KEM), 204 (ML-DSA), 205 (SLH-DSA) finalizedstandards live
  2. 2025
    HQC selected as 5th algorithm (code-based KEM)diversification
  3. 2026
    Draft FIPS for HQC; FN-DSA draft pendingstandards
  4. 2027
    HQC + FN-DSA finalizationstandards

Enforcement

Algorithm authority; downstream regulations cite NIST

Compliance challenge

On-ramp competition for non-lattice signatures continues

United States

NSA CNSA 2.0 (National Security Systems)

phased
  1. 2022
    NSM-10 directs federal PQC transitionpolicy
  2. 2027
    All new NSS acquisitions must be CNSA 2.0 compliant (HARD DEADLINE)mandate begins
  3. 2030
    All deployed NSS software/firmware must use CNSA 2.0 signaturesenforcement
  4. 2031
    Full CNSA 2.0 enforcement across NSS cryptographic implementationsenforcement
  5. 2035
    Full migration target for all NSScompletion

Enforcement

Withholding of FedRAMP, ATO, acquisition authority; NSA is enforcement authority

Compliance challenge

Embedded crypto in legacy weapons platforms with 30+ year service life; supply-chain assurance

United States

CISA EO 14306 — Product Categories List

in-effect
  1. 2025
    EO 14306 (Jun 6) — amends EO 14144, directs CISA to publish PQC product-categories listpolicy
  2. 2026
    CISA Product Categories List published Jan 23 (delayed from Dec 2025)mandate begins
  3. 2026+
    Updates to "Widely Available" vs "Transitioning" tiers periodicallyongoing

Enforcement

Vendors must implement FIPS 203/204/205 to qualify; affects federal procurement

Compliance challenge

Two-tier system creates compliance ambiguity for cross-tier products

United States

FIPS 140-2 → 140-3 Transition

upcoming
  1. 2026
    September 21 — all FIPS 140-2 certificates move to HistoricalHARD DEADLINE
  2. 2026+
    Only FIPS 140-3 validations support new federal acquisitionsongoing

Enforcement

Required for federal procurement; affects HSM/library vendors universally

Compliance challenge

Lab queue backlog; module vendors must re-validate against FIPS 140-3 (ISO/IEC 19790)

European Union

EU Coordinated Implementation Roadmap

phased
  1. 2024
    Commission Recommendation published (April)policy
  2. 2025
    NIS Cooperation Group publishes Part 1 of Roadmap (June)guidance
  3. 2026
    Milestone 1 (Dec 31): cryptographic inventories completediscovery
  4. 2030
    Milestone 2 (Dec 31): PQC transition for all high-risk use caseshigh-risk migration
  5. 2035
    Milestone 3 (Dec 31): PQC transition for medium-risk use casesbroad migration

Enforcement

NIS2 Directive (fines up to 2% of global turnover); DORA for financial sector

Compliance challenge

27 Member States × fragmented execution; BSI/ANSSI hybrid mandates add complexity

United Kingdom

NCSC Three-Phase Plan

phased
  1. 2028
    Phase 1 (by): Discover cryptographic estate, build migration plandiscovery
  2. 2028-31
    Phase 2: Execute high-priority upgradesmigration
  3. 2031-35
    Phase 3: Complete migration across systems, services, productscompletion

Enforcement

Voluntary framework — supplier-relationship and procurement leverage via NCSC/CAF/PRA/FCA/Ofcom

Compliance challenge

Voluntary execution depends on board-level prioritization

Canada

CCCS ITSM.40.001

phased
  1. 2025
    ITSM.40.001 published (June 23)policy
  2. 2026
    April 1: All new digital-component contracts must include PQC procurement clausesHARD DEADLINE
  3. 2026
    April: Initial departmental migration plans due; annual reporting beginsplanning
  4. 2031
    High-priority systems completemigration
  5. 2035
    Full GoC migration completecompletion

Enforcement

Treasury Board procurement authority

Compliance challenge

UNCLASSIFIED through PROTECTED B scope — algorithms must be disabled/isolated/tunnelled, not merely supplemented

Japan

METI / NISC / CRYPTREC / NCSB

phased
  1. 2025
    METI cyber-industry policy package (Mar); SBOM joint framework (Sep)policy
  2. 2026
    PQShield ML-KEM evaluation for CRYPTREC (Apr); ML-KEM expected on CRYPTREC liststandards
  3. 2027
    Formal national PQC roadmap expected from NCO (May)planning
  4. 2035
    Government PQC transition targetcompletion

Enforcement

CRYPTREC inclusion drives procurement and regulated-sector adoption

Compliance challenge

No statutory penalty; relies on METI guidance for critical infrastructure

China

ShangMi (SM) Standards

in-effect
  1. 2010s
    SM2 (ECC), SM3 (hash), SM4 (block) standardized — GB/T 32907-2016in force
  2. 2026
    15th Five-Year Plan elevates quantum to #1 of seven "future industries"policy
  3. 2026-30
    No public PQC algorithm replacing SM-suite; parallel QKD + research pathunclear

Enforcement

State Cryptography Administration (SCA); mandates SM-suite for licensed products + critical infrastructure

Compliance challenge

Multinationals must implement SM-suite in China AND NIST PQC in West — crypto-agility mandatory

Why "universal FTQC by 2030" claims should be discounted

  • The word "universal." Universal FTQC requires a complete logical-gate set including non-Clifford T-gates, which requires magic-state distillation overhead no vendor has demonstrated at scale.
  • The word "fully." A 100-logical-qubit machine running surface-code-protected circuits is FTQC but not at the scale that breaks RSA or simulates FeMoco. Vendors use "FTQC" to mean both.
  • Roadmaps in this industry historically slip 12–24 months. Pasqal slipped openly. PsiQuantum slipped quietly. IonQ has reframed metrics multiple times. Apply a discount.