Theses›Defence & security›QKD

QKD

The physics works and China built a national quantum network, but Western security agencies tell every buyer QKD most wants not to buy it.

  • Bear
  • Shut
  • $230M by 2035

The callThe bear case wins by a wide margin: NSA, NCSC, BSI, ANSSI and the Dutch agency steer governments, defence and banks to post-quantum cryptography, and the listed names are absorbing what is left. The market goes from $100M to $230M on programme money alone.

D1D2R1R2C1foragainst D1D2R1R2C1foragainst
Fig. 1The balance. Drivers and catalysts against restraints, each block sized by its weight; catalysts hang dashed because they have not happened yet, sized by their odds. It tips toward the restraints.
  1. D1A state that wants links secure against any maths assumption builds a quantum network as infrastructure, as China did across 4,600 km and by satellite to Stellenbosch.
  2. D2Repeater and memory money arrived in Q2 2026, which could remove the trusted nodes that make today's QKD a weak point.
  3. R1The NSA does not anticipate certifying any QKD product, the US DoD bans it, and the UK plans full post-quantum migration by 2035 with QKD outside the path.
  4. R2The layer is being absorbed into listed names: IonQ took control of ID Quantique, Toshiba folded QKD into an ML-KEM stack.
  5. C1A major Western security agency endorses QKD for a specific use, which would reverse the buyers' guidance; nothing dated points to it beyond ANSSI's 2027 certification milestones.2027
Rests onthe beliefs underneath
Supported by · confidence
What would prove itdated tests, open and resolved
20272028202920302031today12345predictionswatch 20272028202920302031today12345predictionswatch
Fig. 2Each ring is a dated test: dashed while open, struck through when overdue, ticked or crossed once resolved.
  1. 1Through end-2027 national security agencies (NSA / NCSC / BSI / ANSSI) keep steering buyers to PQC over QKD in published guidance AND no pure-play QKD-hardware company raises at >=$500M valuation; either breaking is the re-open trigger.Dec 2027 · open
  2. 2The agencies still steer to post-quantum cryptography and no QKD hardware company raises at $500M or more.Dec 2027 · open
  3. 3ANSSI certification milestones; any major agency endorsing QKD for a named use would change the view.Dec 2027 · open
  4. 4Standalone QKD does not become a venture-scale category by 2030: no pure-play QKD-hardware company reaches a >$1B independent outcome, because national security agencies continue to recommend PQC over QKD and the addressable buyers follow that guidance.Dec 2030 · open
  5. 5No QKD company reaches a $1B independent outcome; the repeater money of Q2 2026 is what keeps the 2030s on watch.Dec 2030 · open
Expressionslisted, private, technologies
  • 688027.SSQuantumCTek
    • not screened
     Sells fibre QKD systems, key-switching equipment and satellite-QKD ground stations to Chinese government networks and China Telecom.
  • IONQID Quantique (IonQ)
    • speculative
     Sells QKD systems, quantum random number generators and single-photon detectors to telcos, banks and governments; controlled by IonQ since May 2025.
  • 6502.TToshiba
    • not screened
     Sells long-distance fibre QKD systems, including a combined QKD and post-quantum product, to telcos and government networks.
Private · 3 private companies.

Q*Bird (now Falqon Systems) · SpeQtral · Quantum Industries

15 more private companies tracked, not shown

Technologies
Who has already bet on itprivate rounds, from public sources

$26M raised by 3 companies, $42M of it in the last three years. Wave building: Money is arriving: recent rounds and tier-1 funds are in, but no runaway leader yet.

Backed by a top-tier venture firm: SpeQtral.

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