Where it fits in a quantum computer
Japan’s September 2025 supply-chain roadmap for superconducting quantum computers, written by AIST, RIKEN, Fujitsu and NEC, says that where connectors smaller than SMP are needed near the qubit sample, non-magnetic SMPM connectors and adapters from JAE are almost the only option, since Rosenberger does not offer them, and it shows JAE SMPM parts mounted on a sample circuit board.
What the evidence establishes
Quantum-computing evidencePartner-disclosed: the AIST–RIKEN–Fujitsu–NEC roadmap names JAE’s non-magnetic SMPM connectors as almost the only option at that size.
An explicit quantum-computing product, design-in, supply role, program or partnership, such as a part sold for quantum computers or a named quantum-computer customer. For a maker, it means the company’s own quantum computers or processors. This does not establish revenue, market share, volumes or future sourcing.
| Component role | Non-magnetic SMPM connectors used near qubit chips |
|---|---|
| Evidence | Partner-disclosed: the AIST–RIKEN–Fujitsu–NEC roadmap names JAE’s non-magnetic SMPM connectors as almost the only option at that size. |
| How we know | Partner-disclosed A named partner, customer or platform owner’s document names the company. The scope is that document’s system or program, not a general supply relationship. |
| Primary source | Japan Aviation Electronics Industry (JAE) — supporting disclosure Company or official disclosure; vendor claims are attributed to their source. |
| Checked | . This is the research review date, not the source publication or quote time. |
Keep in perspective
The roadmap describes use in research setups and gives no volumes or named commercial system; no JAE product page for quantum use was found in our sources. Qubit-package connectors are a tiny niche in JAE’s connector business.
Diversified business exposure. This describes the breadth or role of the business; it is not an investment rating. A quantum-computing product, design-in or partnership does not by itself establish material quantum revenue, market share, or future returns.
Connections to the assembly
These links explain the technology relationship. The model is illustrative and does not represent an actual manufacturer’s bill of materials.
Connectors & feedthroughs
Miniature coaxial connectors at every stage and hermetic feedthroughs in the top plate that carry the lines out of the vacuum without leaking.
Scope of the company links: SMA connectors dominate between stages, smaller non-magnetic SMP or SMPM connectors sit near the chip, and hermetic feedthroughs seal the vacuum can. Huber+Suhner sells non-magnetic SMA connectors, hermetic bulkhead adapters and multicoax connectors for quantum computing; the AIST roadmap says JAE’s non-magnetic SMPM connectors are almost the only option at that size; QuantumCTek sells vacuum-hermetic adapters; Hirose’s SER unit sells NbTi multi-coax connectors for quantum computers; and TE and Bel Fuse’s Cinch are named as makers of micro-D connectors used for dense DC wiring, a generic role. Private suppliers include Rosenberger (non-magnetic SMP, widely used in Japanese labs), Fischer (hermetic DC connectors), Radiall and CryoCoax.
Related research
Companies with overlapping sector exposure. Their products and evidence may differ; this is not a list of equivalent investments.
- A
Amphenol
APH · NYSEXMA cryo attenuators and IR filters; Narda-MITEQ cryo LNAs
Quantum-computing evidence - HE
Hirose Electric
6806.T · TSENbTi multi-coax connector cables for quantum (Hirose SER)
Quantum-computing evidence - Hu
Huber+Suhner
HUBN.SW · SIXCryogenic NbTi/CuNi coax, multicoax and non-magnetic SMA
Quantum-computing evidence - QQ
QTREX Quantum
QTEX · NASDAQPrinted coaxial cryogenic interconnects (in development)
Quantum-computing evidence - QC
Quanta Computer
2382.TW · TaiwanMay develop Rigetti’s dilution fridges, cables and controls
Quantum-computing evidence