5.1 KiB
| type | title | author | url | date | domain | secondary_domains | format | status | priority | tags | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| source | Kiutra Commercial ADR Temperature Specifications: 100-300mK, Not Sufficient for Superconducting Qubits | Kiutra GmbH (kiutra.com) | https://kiutra.com/cryogen-free-sub-kelvin-cooling-rd/ | 2026-03-20 | space-development | company-website | unprocessed | medium |
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Content
Source: Kiutra GmbH company product pages and technology documentation (accessed March 2026)
Commercial product temperature specifications:
- 2-stage cADR: continuous cooling at or above 200 mK
- 3-stage cADR: continuous cooling at or above 100 mK
- S-Type (2 ADR units): continuous sub-kelvin cooling; one-shot mode achieves lower temperatures for limited duration
- L-Type Rapid: continuous at 300 mK, one-shot to 100 mK; automatic sample transfer; cooldown within 3 hours
What "continuous" means: cADR achieves continuous cooling (not intermittent) by running two ADR stages alternately — one cooling while the other regenerates (1-2 hour regeneration, 70-95% duty cycle).
The critical gap for quantum computing:
- Superconducting qubit operating requirement: 10-25 mK (most state-of-the-art systems operate at or below 20 mK)
- Kiutra commercial products: 100-300 mK — a gap of 4-10x
- This means: current commercial He-3-free ADR is NOT capable of operating superconducting quantum computers
Kiutra's unique position: Kiutra is "the only company worldwide that can offer ADR in a continuous configuration (cADR)." Their commercial deployment at research institutions, quantum startups, and corporates worldwide is for applications that require sub-kelvin cooling but NOT the 10-25 mK range of superconducting qubits — e.g., materials research, sensing, quantum optics experiments.
LEMON project context: Kiutra's commercial 100-300 mK products are separate from the LEMON research project, which achieved sub-30 mK in March 2025 and aims to close the gap to qubit temperatures.
Research applications at 100-300 mK:
- Quantum sensing (some superconducting detectors work at these temperatures)
- Materials science (magnetic measurements, specific heat)
- Some quantum optics experiments
- Pre-cooling for deeper stages (dilution refrigerators pre-cooled by pulse tube first)
Agent Notes
Why this matters: This establishes the baseline: commercially deployed He-3-free ADR is at 100-300 mK, NOT at 10-25 mK required for superconducting qubits. This is the critical clarification from the previous session's "Kiutra already commercially deployed" finding — prior session may have been ambiguous about whether Kiutra's deployment reached qubit temperatures. It does not.
What surprised me: The "worldwide deployment" of Kiutra systems is real but for applications that don't require 10-25 mK. The previous session noted "Kiutra already commercially deployed worldwide" as evidence against the "no terrestrial alternative at scale" premise — that framing was misleading. The correct statement is: "Kiutra commercially deployed for sub-kelvin (not sub-30 mK) applications; He-3 free alternatives for superconducting qubits require the LEMON breakthrough to commercialize."
What I expected but didn't find: Pricing for commercial systems. Customer list (beyond "quantum startups and corporates"). Timeline for when LEMON results might translate to commercial products in the 10-25 mK range.
KB connections:
- Corrects prior session's "Kiutra already commercially deployed" finding — clarifies that commercial deployment is at 100-300 mK, not at qubit temperatures
- Supports the ADR temperature gap analysis: commercial products at 100-300 mK vs. research at ~30 mK vs. qubit requirement at 10-25 mK
Extraction hints:
- Correction to Pattern 4 qualifier: The prior session said "Kiutra is already deployed — He-3-free alternatives exist." This needs refinement: "Kiutra is deployed for sub-kelvin (100-300 mK) applications; He-3-free alternatives for superconducting qubits (10-25 mK) do not yet exist commercially."
- New claim candidate: "Commercial He-3-free ADR systems reach 100-300 mK — insufficient for superconducting qubit operation at 10-25 mK — demonstrating that He-3 substitution for quantum computing requires research ADR systems (approaching 27-30 mK) to bridge a remaining 2-4x temperature gap before commercial deployment"
- This is a calibration source — use to set the baseline before citing LEMON and KYb3F10 progress
Curator Notes
PRIMARY CONNECTION: Pattern 4 qualification — establishes the commercial ADR temperature baseline (100-300 mK) vs. the research frontier (27-30 mK) vs. qubit requirement (10-25 mK) WHY ARCHIVED: Critical calibration data — establishes that "Kiutra commercial deployment" does NOT mean "He-3-free alternatives for superconducting qubits exist"; corrects potential over-reading of prior session findings EXTRACTION HINT: Read alongside JACS KYb3F10 paper and LEMON project — these three sources together give the full picture: commercial floor (100-300 mK), research frontier (27-30 mK), qubit requirement (10-25 mK).