pipeline: archive 1 source(s) post-merge

Pentagon-Agent: Epimetheus <3D35839A-7722-4740-B93D-51157F7D5E70>

inbox/archive/general/2026-03-20-kiutra-commercial-adr-temperature-specs.md

@@ -0,0 +1,61 @@
+---
+type: source
+title: "Kiutra Commercial ADR Temperature Specifications: 100-300mK, Not Sufficient for Superconducting Qubits"
+author: "Kiutra GmbH (kiutra.com)"
+url: https://kiutra.com/cryogen-free-sub-kelvin-cooling-rd/
+date: 2026-03-20
+domain: space-development
+secondary_domains: []
+format: company-website
+status: processed
+priority: medium
+tags: [helium-3, ADR, cADR, quantum-computing, cryogenics, kiutra, temperature-floor, he3-alternatives]
+---
+
+## 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).